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201. Search for SUSY with R-parity violating $LL\overline{E}$ couplings at $\sqrt{s}$=189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G D., Alemany, R., Allmendinger, T., Allport, P P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., Benekos, N C., Benvenuti, A C., Berat, C., Berggren, M., Berntzon, L., Bertrand, D., Besancon, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Blom, H M., Bonesini, M., Boonekamp, M., Booth, P S L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R A., Bruckman, P., Brunet, J M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H B., Crennell, D., Crosetti, G., Cuevas-Maestro, J., Czellar, S., D'Hondt, J., Dalmau, J., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Eigen, G., Ekelof, T., Ellert, M., Elsing, M., Engel, J.P., Espirito-Santo, M C., Fanourakis, G K., Fassouliotis, D., Feindt, M., Fernandez, J., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Firestone, A., Flagmeyer, U., Foth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez-Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J J., Herquet, P., Herr, H., Higon, E., Holmgren, S O., Holt, P J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Hughes, G J., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keranen, R., Kernel, G., Kersevan, B P., Khokhlov, Yu., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kinvig, A., Kjaer, N J., Klapp, O., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J W., Lane, D W., Lapin, V., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Lorstad, B., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J R., Maio, A., Malek, A., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Merle, E., Meroni, C., Meyer, W T., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W A., Mjornmark, U., Moa, T., Moch, M., Moller, R., Monig, K., Monge, M R., Moraes, D., Morettini, P., Morton, G., Muller, U., Munich, K., Mulders, M., Mulet-Marquis, C., Mundim, L M., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F L., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B S., Niezurawski, P., Nikolenko, M., Nomokonov, V P., Nygren, A., Obraztsov, V F., Olshevskii, A G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Poireau, V., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, A L., Rebecchi, P., Redaelli, N G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Savoy-Navarro, A., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, A M., Seibert, N., Sekulin, R., Sette, G., Shellard, R C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A N., Smadja, G., Smirnova, O., Smith, G R., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Timmermans, J., Tinti, N., Tkatchev, L G., Tobin, M., Todorova, S., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M L., Tyapkin, I A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Dam, P., Van Den Boeck, W., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Washbrook, A J., Weiser, C., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zintchenko, A., Zoller, P., Zumerle, G., Zupan, M., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract: Searches for pair production of supersymmetric particles under the assumption that R-parity is not conserved are presented, based on data recorded by the DELPHI detector in 1998 from e+e- collisions at a centre-of-mass energy of 189 GeV. Only one R-parity violating LL\bar{E} term (i.e. one lambda coupling), which couples scalar leptons to leptons, is considered to be dominant at a time. Moreover, it is assumed that the strength of the R-parity violating couplings is such that the lifetimes can be neglected. The search for pair production of neutralinos, charginos and sleptons has been performed for both direct R-parity violating decays and indirect cascade decays. The results are in agreement with Standard Model expectations, and are used to update the constraints on the MSSM parameter values and the mass limits previously derived at sqrt(s) = 183 GeV. The present 95% C.L. limits on supersymmetric particle masses are: m_{\tilde��^0} > 30 GeV/c^2 and m_{\tilde��^\pm} > 94 GeV/c^2; m_{\tilde��} > 76.5 GeV/c^2 (direct and indirect decays); m_{\tilde{\ell}_R} > 83 GeV/c^2 (indirect decay only)., 18 pages, 6 figures
Published: 2000

202. Search for charginos in e(+)e(-) interactions at root s=189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G., Alemany, R., Allmendinger, T., Allport, P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W., Arnoud, Y., Asman, B., Augustin, J., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Y., Benekos, N., Benvenuti, A., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenky, M., Bizouard, M., Bloch, D., Blom, H., Bonesini, M., Boonekamp, M., Booth, P., Borgland, A., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T., Boyko, I., Bozovic, I., Bozzo, Marco, Bracko, M., Branchini, P., Brenner, R., Bruckman, P., Brunet, J., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Gimenez, M., Cattai, A., Cavallo, F., Chabaud, V., Charpentier, P., Checchia, P., Chelkov, G., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H., Crennell, D., Crepe, S., Crosetti, G., Maestro, J., Czellar, S., Davenport, M., Silva, W. D., Ricca, G. D., Delpierre, P., Demaria, N., Angelis, A. D., Boer, W. D., Clercq, C. D., Lotto, B. D., Min, A. D., Paula, L. D., Dijkstra, H., Ciaccio, L. D., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J., Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, Flavio, Franek, B., Frodesen, A., Fruhwirth, R., Fulda Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E., Gele, D., Geralis, T., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez Ceballos, G., Goncalves, P., Caballero, I., Gopal, G., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F., Hedberg, V., Heising, S., Hernandez, J., Herquet, P., Herr, H., Hessing, T., Heuser, J., Higon, E., Holmgren, S., Holt, P., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G., Hultqvist, K., Jackson, J., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean Marie, B., Jeans, D., Johansson, E., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E., Keranen, R., Kernel, G., Kersevan, B., Khokhlov, Y., Khomenko, B., Khovanski, N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J., Lane, D., Laugier, J., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J., Lopes, J., Lopez, J., Lopez Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J., Maio, A., Malek, A., Malmgren, T., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J., Mariotti, C., Markou, A., Martinez Rivero, C., Martinez Vidal, F., Garcia, S., Masik, F., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Cubbin, M. M., Kay, R. M., Nulty, R. M., Pherson, G. M., Meroni, C., Meyer, W., Migliore, E., Mirabito, L., Mitaroff, W., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, MARIA ROBERTA, Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet Marquis, C., Muresan, R., Murray, W., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V., Olshevski, A., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T., Pape, L., Parkes, C., Parodi, Fabrizio, Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, Alessandro, Phillips, H., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P., Read, A., Rebecchi, P., Redaelli, N., Regler, M., Rehn, J., Reid, D., Reinhardt, R., Renton, P., Resvanis, L., Richard, F., Ridky, J., Rinaudo, G., Ripp Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, A., Seibert, N., Sekulin, R., Shellard, R., Siebel, M., Simard, L., Simonetto, F., Sisakian, A., Smadja, G., Smirnov, N., Smirnova, O., Smith, G., Sokolov, A., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, Sandro, Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tchikilev, O., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L., Tobin, M., Todorova, S., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M., Tyapkin, I., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Velde, C. V., Dam, P. V., Den, W. V., Doninck, W. V., Eldik, J. V., Lysebetten, A. V., Remortel, N. v., Vulpen, I. V., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A., Weiser, C., Wicke, D., Wickens, J., Wilkinson, G., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N., Zintchenko, A., Zoller, P., Zucchelli, G., Zumerle, G., and Collaboration, D.
Subjects: NEUTRALINOS, COLLIDERS, ENERGIES, EVENT GENERATOR, GRAVITINO, MONTE-CARLO PROGRAM, RADIATIVE-CORRECTIONS, Z-DECAYS, SUPERSYMMETRY, LEP
Published: 2000

203. Measurement of the B̄ → D(*)πℓν̄ℓ branching fraction

Author: Abreu, P, Adam, W, Adye, T, Adzic, P, Ajinenko, I, Albrecht, Z, Alderweireld, T, Alekseev, GD, Alemany, R, Allmendinger, T, Allport, PP, Almehed, S, Amaldi, U, Amapane, N, Amato, S, Anassontzis, EG, Andersson, P, Andreazza, A, Andringa, S, Antilogus, P, Apel, W-D, Arnoud, Y, Asman, B, Augustin, J-E, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Barbier, R, Bardin, DY, Barker, G, Baroncelli, A, Battaglia, M, Baubillier, M, Becks, K-H, Begalli, M, Behrmann, A, Beilliere, P, Belokopytov, Y, Benekos, NC, Benvenuti, AC, Berat, C, Berggren, M, Bertini, D, Bertrand, D, Besancon, M, Bigi, M, Bilenky, MS, Bizouard, M-A, Bloch, D, Blom, HM, Bonesini, M, Bonivento, W, Boonekamp, M, Booth, PSL, Borgland, AW, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, TJV, Boyko, I, Bozovic, I, Bozzo, M, Bracko, M, Branchini, P, Brenner, RA, Bruckman, P, Brunet, J-M, Bugge, L, Buran, T, Buschbeck, B, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Camporesi, T, Canale, V, Carena, F, Carroll, L, Caso, C, Gimenez, MC, Cattai, A, Cavallo, FR, Chabaud, V, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, GA, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cieslik, K, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, HB, Crennell, D, Crepe, S, Crosetti, G, Maestro, JC, Czellar, S, Davenport, M, Da Silva, W, Ricca, GD, Delpierre, P, Demaria, N, De Angelis, A, De Boer, W, De Clercq, C, De Lotto, B, De Min, A, De Paula, L, Dijkstra, H, Di Ciaccio, L, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Dris, M, Duperrin, A, Durand, J-D, Eigen, G, Ekelof, T, Ekspong, G, Ellert, M, Elsing, M, Engel, J-P, Santo, ME, Fanourakis, G, Fassouliotis, D, Fayot, J, Feindt, M, Ferrari, P, Ferrer, A, Ferrer-Ribas, E, Ferro, F, Fichet, S, Firestone, A, Flagmeyer, U, Foeth, H, Fokitis, E, Fontanelli, F, Franek, B, Frodesen, AG, Fruhwirth, R, Fulda-Quenzer, F, Fuster, J, Galloni, A, Gamba, D, Gamblin, S, Gandelman, M, Garcia, C, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, EN, Gele, D, Gerdyukov, L, Ghodbane, N, Gil, I, Glege, F, Gokieli, R, Golob, B, Gomez-Ceballos, G, Goncalves, P, Caballero, IG, Gopal, G, Gorn, L, Gracco, V, Grahl, J, Graziani, E, Gris, P, Grosdidier, G, Grzelak, K, Guy, J, Hahn, F, Hahn, S, Haider, S, Hallgren, A, Hamacher, K, Hansen, J, Harris, FJ, Hedberg, V, Heising, S, Hernandez, JJ, Herquet, P, Herr, H, Hessing, TL, Heuser, J-M, Higon, E, Holmgren, S-O, Holt, PJ, Hoorelbeke, S, Houlden, M, Hrubec, J, Huber, M, Huet, K, Hughes, GJ, Hultqvist, K, Jackson, JN, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Jeans, D, Johansson, EK, Jonsson, P, Joram, C, Juillot, P, Jungermann, L, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, EC, Keranen, R, Kernel, G, Kersevan, BP, Khokhlov, Y, Khomenko, BA, Khovanski, NN, Kiiskinen, A, King, B, Kinvig, A, Kjaer, NJ, Klapp, O, Klein, H, Kluit, P, Kokkinias, P, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kriznic, E, Krumstein, Z, Kubinec, P, Kurowska, J, Kurvinen, K, Lamsa, JW, Lane, DW, Lapin, V, Laugier, J-P, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Leinonen, L, Leisos, A, Leitner, R, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liebig, W, Liko, D, Lipniacka, A, Lippi, I, Loerstad, B, Loken, JG, Lopes, JH, Lopez, JM, Lopez-Fernandez, R, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J, Mahon, JR, Maio, A, Malek, A, Malmgren, TGM, Maltezos, S, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, J-C, Mariotti, C, Markou, A, Martinez-Rivero, C, Martinez-Vidal, F, Marti i Garcia, S, Masik, J, Mastroyiannopoulos, N, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, F, Mazzucato, M, Mc Cubbin, M, Mc Kay, RM, Mc Nulty, R, Mc Pherson, G, Meroni, C, Meyer, WT, Miagkov, A, Migliore, E, Mirabito, L, Mitaroff, WA, Mjoernmark, U, Moa, T, Moch, M, Moeller, R, Moenig, K, Monge, MR, Moreau, X, Morettini, P, Morton, G, Mueller, U, Muenich, K, Mulders, M, Mulet-Marquis, C, Muresan, R, Murray, WJ, Muryn, B, Myatt, G, Myklebust, T, Naraghi, F, Nassiakou, M, Navarria, FL, Navas, S, Nawrocki, K, Negri, P, Neufeld, N, Nicolaidou, R, Nielsen, BS, Niezurawski, P, Nikolenko, M, Nomokonov, V, Nygren, A, Obraztsov, V, Olshevski, AG, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palacios, J, Palka, H, Papadopoulou, TD, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Passon, O, Pavel, T, Pegoraro, M, Peralta, L, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, HT, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Pol, ME, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, PN, Read, AL, Rebecchi, P, Redaelli, NG, Regler, M, Rehn, J, Reid, D, Reinhardt, R, Renton, PB, Resvanis, LK, Richard, F, Ridky, J, Rinaudo, G, Ripp-Baudot, I, Rohne, O, Romero, A, Ronchese, P, Rosenberg, EI, Rosinsky, P, Roudeau, P, Rovelli, T, Royon, C, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schwemling, P, Schwering, B, Schwickerath, U, Scuri, F, Seager, P, Sedykh, Y, Segar, AM, Seibert, N, Sekulin, R, Shellard, RC, Siebel, M, Simard, L, Simonetto, F, Sisakian, AN, Smadja, G, Smirnov, N, Smirnova, O, Smith, GR, Sokolov, A, Sopczak, A, Sosnowski, R, Spassov, T, Spiriti, E, Squarcia, S, Stanescu, C, Stanic, S, Stanitzki, M, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Taffard, A, Tegenfeldt, F, Terranova, F, Thomas, J, Timmermans, J, Tinti, N, Tkatchev, LG, Tobin, M, Todorova, S, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Tortosa, P, Transtromer, G, Treille, D, Tristram, G, Trochimczuk, M, Troncon, C, Turluer, M-L, Tyapkin, LA, Tzamarias, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vander Velde, C, Van Dam, P, Van den Boeck, W, Van Doninck, WK, Van Eldik, J, Van Lysebetten, A, van Remortel, N, Van Vulpen, I, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, LS, Verzi, V, Vilanova, D, Vitale, L, Vlasov, E, Vodopyanov, AS, Voulgaris, G, Vrba, V, Wahlen, H, Walck, C, Washbrook, AJ, Weiser, C, Wicke, D, Wickens, JH, Wilkinson, GR, Winter, M, Witek, M, Wolf, G, Yi, J, Yushchenko, O, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, NI, Zintchenko, A, Zoller, P, Zucchelli, GC, and Zumerle, G
Abstract: A study of b semileptonic decays into D, Dπ± and D*π± final states is presented. The D0, D+ and D*+ mesons are exclusively reconstructed in Z decay data recorded from 1992 to 1995 in the DELPHI experiment at LEP. The overall branching fractions are measured to be: BR(b→ D0ℓ-νℓX) = (7.04 + 0.34 (stat) + 0.36 (syst.exp) + 0.17 (BRD))%, BR(b→ D+ℓ-νℓX) = (2.72 + 0.19 (stat) + 0.16 (syst.exp) + 0.18 (BRD))%, BR(b→ D*+ℓ-νℓX) = (2.75 + 0.17 (stat) + 0.13 (syst.exp) + 0.09 (BRD))%, where the D0 and D+ results include also contributions from D*0 and D*+ decays. A fit to the distribution of the π± impact parameter to the primary interaction vertex provides a measurement of the b semileptonic branching fractions into the D0π±X, D+π±X and D*+π±X final states. Assuming that single pion decay modes of B mesons dominate, the partial rates for B→Dπℓ-νℓ and B→D*πℓ-νℓ have been obtained, corresponding to a total branching fraction: BR(B→Dπℓ-νℓ) +BR(B→D*πℓ-νℓ) = (3.40 + 0.52 (stat) + 0.32 (syst))%. This result agrees well with the observed difference between the total B semileptonic branching fraction and the sum of the B→Dℓ-νℓ and B→D*ℓ-νℓ branching fractions. © 2000 Elsevier Science B.V.
Published: 2000

204. Search for charginos in $e^+ e^-$ interactions at $\sqrt{s}$= 189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G D., Alemany, R., Allmendinger, T., Allport, P P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Benekos, N C., Benvenuti, A C., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Blom, H M., Bonesini, M., Boonekamp, M., Booth, P S L., Borgland, A W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R A., Bruckman, P., Brunet, J M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Chabaud, V., Charpentier, P., Checchia, P., Chelkov, G A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H B., Crennell, D., Crepe, S., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J D., Eigen, G., Ekeloef, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A G., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Geralis, T., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez-Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F J., Hedberg, V., Heising, S., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G J., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keranen, R., Kernel, G., Kersevan, B P., Khokhlov, Yu., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kinvig, A., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J W., Lane, D W., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T G M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W T., Migliore, E., Mirabito, L., Mitaroff, W A., Mjoernmark, U., Moa, T., Moch, M., Moller, R., Moenig, K., Monge, M R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V F., Olshevskii, A G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, A L., Rebecchi, P., Redaelli, N G., Regler, M., Rehn, J., Reid, D., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, A M., Seibert, N., Sekulin, R., Shellard, R C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A N., Smadja, G., Smirnov, N., Smirnova, O., Smith, G R., Sokolov, A., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Chikilev, O., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L G., Tobin, M., Todorova, S., Tomaradze, A G., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtroemer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M L., Tyapkin, I A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., Van Dam, P., Van Den Boeck, W., Van Doninck, W K., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A J., Weiser, C., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zintchenko, A., Zoller, P., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract: An update of the searches for charginos and gravitinos is presented, based on a data sample corresponding to the 158 pb^{-1} recorded by the DELPHI detector in 1998, at a centre-of-mass energy of 189 GeV. No evidence for a signal was found. The lower mass limits are 4-5 GeV/c^2 higher than those obtained at a centre-of-mass energy of 183 GeV. The (\mu,M_2) MSSM domain excluded by combining the chargino searches with neutralino searches at the Z resonance implies a limit on the mass of the lightest neutralino which, for a heavy sneutrino, is constrained to be above 31.0 GeV/c^2 for tan(beta) \geq 1., Comment: 22 pages, 8 figures
Published: 2000

205. Limits on the masses of supersymmetric particles at root s=189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G. D., Alemany, R., Allmendinger, T., Allport, P. P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E. G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D. Y., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K. H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Y., Benekos, N. C., Benvenuti, A. C., Berat, C., Berggren, M., Berntzon, L., Bertrand, D., Besancon, M., Bilenky, M. S., Bizouard, M. A., Bloch, D., Blom, H. M., Bonesini, M., Boonekamp, M., P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, H., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Charpentier, P., Checchia, P., Chelkov, G. A., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czeller, S., D'Hondt, J., Dalmau, J., Davenport, M., Silva, W. D., Ricca, G. D., Delpierre, P., Demaria, N., Angelis, A. D., Boer, W. D., Clercq, C. D., Lotto, B. D., Min, A. D., Paula, L. D., Dijkstra, H., Ciaccio, L. D., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Eigen, G., Ekelof, T., Ellert, M., Elsing, M., Engel, J. P., Santo, M. E., Fanourakis, G., Fassouliotis, D., Feindt, M., Fernandez, J., Ferrer, A., Ferrer Ribas, E., Ferro, F., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A. G., Fruhwirth, R., Fulda Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, V., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Geralis, T., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez Ceballos, G., Goncalves, P., Caballero, I. G., Gopal, G., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F. J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J. J., Herquet, P., Herr, H., Higon, E., Holmgren, S. O., Holt, P. J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Hughes, G. J., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean Marie, B., Jeans, D., Johansson, E. K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E. C., Keranen, R., Kernel, G., Kersevan, B. P., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N. J., Klapp, O., Kluit, P., Kokkinias, P., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J. W., Lane, D. W., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopes, J. H., Lopez, J. M., Lopez Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J. R., Maio, A., Malek, A., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Martinez Rivero, C., Garcia, S. M., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Cubbin, M. M., Kay, R. M., Nulty, R. M., Pherson, G. M., Merle, E., Meroni, C., Meyer, W. T., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, M. R., Moraes, D., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet Marquis, C., Mundim, L. M., Muresan, R., Murray, W. J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F. L., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B. S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Poireau, V., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Rebecchi, P., Redaelli, N. G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P. B., Resvanis, L. K., Richard, F., Ridky, J., Rinaudo, G., Ripp Baudot, I., Romero, A., Ronchese, Paolo, Rosenberg, E. I., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Savoy Navarro, A., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seibert, N., Sekulin, R., Sette, G., Shellard, R. C., Siebel, M., Simard, L., Simonetto, Franco, Sisakian, A. N., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sokolov, A., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, S., Stanescu, C., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tchikilev, O., Tegenfeldt, F., Terranova, F., Timmermans, J., Tinti, N., Tkatchev, L. G., Tobin, M., Todorova, S., Tome, B., Tonazzo, A., Tortora, I., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M. L., Tyapkin, I. A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Velde, C. V., Dam, P. V., Den, W. V., Eldik, J. V., Lysebetten, A. V., Remortel, N. v., Vulpen, I. V., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L. S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A. S., Voulgaris, G., Vrba, V., Wahlen, H., Washbrook, A. J., Weiser, C., Wicke, D., Wickens, J. H., Wilkinson, G. R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zintchenko, A., Zoller, P., Zumerle, Gianni, and Zupan, M.
Subjects: NEUTRALINOS, PHYSICS, COLLISIONS, E(+)E(-) INTERACTIONS, CHARGINO PRODUCTION, SEARCH, QC
Abstract: Searches for charginos, neutralinos and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV have been used to set lower limits on the mass of the Lightest Supersymmetric Particle and other supersymmetric particles within the MSSM framework. R-parity conservation has been assumed. The lightest neutralino was found to be heavier than GeV/c(2) independent of the m(0) value. The Lightest chargino, the second-to-lightest neutralino, the next-to-heaviest neutralino, the heaviest neutralino, the sneutrino and the right-handed selectron were found to be heavier than 62.4 GeV/c2, 62.4 GeV/c(2), 99.9 GeV/c(2), 116.0 GeV/c(2), 61.0 GeV/c(2), and 87.0 GeV/c(2), respectively. These limits do not depend on m(0) or M-2 and are Valid for 1 less than or equal to tan beta less than or equal to 40, in the mu region where the lightest neutralino is the LSP. If the sneutrino is heavier than the chargino the lightest neutralino has to be heavier than 32.4 GeV/c(2). The effects of mixings in the third family of sfermions on these limits are discussed. The confidence level of all limits given is 95%.
Published: 2000

206. A search for invisible Higgs bosons produced in $e^{+} e^{-}$ interactions up to $\sqrt{s}$ = 189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G. D., Alemany, R., Allmendinger, T., Allport, P. P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E. G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. -E, Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D. Yu, Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K. H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu, Belous, K., Benekos, N. C., Benvenuti, A. C., Berat, C., Berggren, M., Berntzon, L., Bertrand, D., Besancon, M., Bilenkii, M. S., Bizouard, M. A., Bloch, D., Blom, H. M., Bonesini, M., Boonekamp, M., Booth, P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M. V., Cattai, A., Cavallo, F. R., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G. A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H. B., Crennell, D., Crosetti, G., Cuevas-Maestro, J., Czellar, S., D Hondt, J., Dalmau, J., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P. A., Demaria, N., Angelis, A., Boer, W., Clercq, C., Lotto, B., Min, A., Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Eigen, G., Ekelof, T., Ellert, M., Elsing, M., Engel, J. P., Espirito-Santo, M. C., Fanourakis, G. K., Fassouliotis, D., Feindt, M., Fernandez, J., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Firestone, A., Flagmeyer, U., Foth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A. G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez-Caballero, I., Gopal, G., Gorn, L., Guz, Yu, Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F. J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J. J., Herquet, P., Herr, H., Higon, E., Holmgren, S. O., Holt, P. J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Hughes, G. J., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E. K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E. C., Keranen, R., Kernel, G., Kersevan, B. P., Khokhlov, Yu, Khomenko, B. A., Khovanskii, N. N., Kiiskinen, A., King, B. J., Kinvig, A., Kjaer, N. J., Klapp, O., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J. W., Lane, D. W., Lapin, V., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Lorstad, B., Loken, J. G., Lopes, J. H., Lopez, J. M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J. R., Maio, A., Malek, A., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Martinez-Rivero, C., Marti, I. Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Mcpherson, G., Merle, E., Meroni, C., Meyer, W. T., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjornmark, U., Moa, T., Moch, M., Moller, R., Monig, K., Monge, M. R., Moraes, D., Morettini, P., Morton, G., Muller, U., Munich, K., Mulders, M., Mulet-Marquis, C., Mundim, L. M., Muresan, R., Murray, W. J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Francesco Luigi Navarria, Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B. S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V. F., Olshevskii, A. G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Poireau, V., Pol, M. E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Rebecchi, P., Redaelli, N. G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P. B., Resvanis, L. K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Romero, A., Ronchese, P., Rosenberg, E. I., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Savoy-Navarro, A., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu, Segar, A. M., Seibert, N., Sekulin, R., Sette, G., Shellard, R. C., Siebel, M., Simard, L. C., Simonetto, F., Sissakian, A. N., Smadja, G., Smirnova, O., Smith, G. R., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, Tz, Spiriti, E., Squarcia, S., Stanescu, C., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Timmermans, J., Tinti, N., Tkatchev, L. G., Tobin, M., Todorova, S., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M. L., Tyapkin, I. A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Dam, P., Den Boeck, W., Doninck, W. K., Eldik, J., Lysebetten, A., Remortel, N., Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L. S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Washbrook, A. J., Weiser, C., Wicke, D., Wickens, J. H., Wilkinson, G. R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zintchenko, A., Zoller, P., Zumerle, G., Zupan, M., Damoiseaux, Magali, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Searches for {\mbox{$ {\mathrm H} {\mathrm Z} $}} production d with the Higgs boson decaying into an invisible final state have been performedd the data collected by the DELPHI experimentd up to the centre-of-mass energy of 188.6~{\mbox{$ {\mathrm{GeV}}$}}. d The hadronic and muon pair final states of the d {\mbox{$ {\mathrm Z} $}} d boson were analysed. No signal was found. d Upper limits on the cross-section and the corresponding Higgs boson mass d limits were set d at 95\% confidence level. Combining these results with DELPHI results for the vd a 95\% confidence level Higgs mass lower limit of 92.3~{\mbox{$d {\mathrm{GeV}}$}} was obtained, independentd of the branching ratio into visible and invisible decays.
Published: 2000

207. Search for heavy stable and long-lived particles in e(+)e(-) collisions at root s=189 GeV

Author: Abreu, P, Adam, W, Adye, T, Adzic, P, Albrecht, Z, Alderweireld, T, Alekseev, GD, Alemany, R, Allmendinger, T, Allport, PP, Almehed, S, Amaldi, U, Amapane, N, Amato, S, Anassontzis, EG, Andersson, P, Andreazza, A, Andringa, S, Antilogus, P, Apel, WD, Arnoud, Y, Asman, B, Augustin, JE, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Barbier, R, Bardin, DY, Barker, G, Baroncelli, A, Battaglia, M, Baubillier, M, Becks, KH, Begalli, M, Behrmann, A, Beilliere, P, Belokopytov, Y, Belous, K, Benekos, NC, Benvenuti, AFC, Berat, C, Berggren, M, Bertrand, D, Besancon, M, Bigi, M, Bilenky, MS, Bizouard, MA, Bloch, D, Blom, HM, Bonesini, M, Boonekamp, M, Booth, PSL, Borgland, AW, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, TJV, Boyko, I, Bozovic, I, Bozzo, B, Bracko, M, Branchini, P, Brenner, RA, Bruckman, P, Brunet, JM, Bugge, L, Buran, T, Buschbeck, B, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Camporesi, T, Canale, V, Carena, F, Carroll, L, Caso, C, Gimenez, MVC, Cattai, A, Cavallo, FR, Chabaud, V, Chapkin, M, Charpentier, P, Checchia, P, Chelkov, GA, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cieslik, K, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, HB, Crennell, D, Crepe, S, Crosetti, G, Maestro, JC, Czellar, S, Davenport, M, Da Silva, W, Della Ricca, G, Delpierre, P, Demaria, N, De Angelis, A, De Boer, W, De Clercq, C, De Lotto, B, De Min, A, De Paula, L, Dijkstra, H, Di Ciaccio, L, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Dris, M, Duperrin, A, Durand, JD, Eigen, G, Ekelof, T, Ekspong, G, Ellert, M, Elsing, M, Engel, JP, Santo, ME, Fanourakis, G, Fassouliotis, D, Fayot, J, Feindt, M, Ferrer, A, Ferrer-Ribas, E, Ferro, F, Fichet, S, Firestone, A, Flagmeyer, U, Foeth, H, Fokitis, E, Fontanelli, F, Franek, B, Frodesen, AG, Fruhwirth, R, Fulda-Quenzer, F, Fuster, J, Galloni, A, Gamba, D, Gamblin, S, Gandelman, M, Garcia, C, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, EN, Gele, D, Geralis, T, Ghodbane, N, Gil, I, Glege, F, Gokieli, R, Golob, B, Gomez-Ceballos, G, Goncalves, P, Caballero, IG, Gopal, G, Gorn, L, Gouz, Y, Cracco, V, Grahl, J, Graziani, E, Gris, P, Grosdidier, G, Grzelak, K, Guy, J, Haag, C, Hahn, F, Hahn, S, Haider, S, Hallgren, A, Hamacher, K, Hansen, J, Harris, FJ, Hedberg, V, Heising, S, Hernandez, JJ, Herquet, P, Herr, H, Hessing, TL, Heuser, JM, Higon, E, Holmgren, SO, Holt, PJ, Hoorelbeke, S, Houlden, M, Hrubec, J, Huber, M, Huet, K, Hughes, GJ, Hultqvist, K, Jackson, JN, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Jeans, D, Johansson, EK, Jonsson, P, Joram, C, Juillot, P, Jungermann, L, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, EC, Keranen, R, Kernel, G, Kersevan, BP, Khokhlov, Y, Khomenko, BA, Khovanski, NN, Kiiskinen, A, King, B, Kinvig, A, Kjaer, NJ, Klapp, O, Klein, H, Kluit, P, Kokkinias, P, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kriznic, E, Krumstein, Z, Kubinec, P, Kurowska, J, Kurvinen, K, Lamsa, JW, Lane, DW, Lapin, V, Laugier, JP, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Leinonen, L, Leisos, A, Leitner, R, Lenzen, G, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liebig, W, Liko, D, Lipniacka, A, Lippi, I, Loerstad, B, Loken, JG, Lopes, JH, Lopez, JM, Lopez-Fernandez, R, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J, Mahon, JR, Maio, A, Malek, A, Malmgren, TGM, Maltezos, S, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, JC, Mariotti, C, Markou, A, Martinez-Rivero, C, Martinez-Vidal, F, Garcia, SMI, Masik, J, Mastroyiannopoulos, N, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, F, Mazzucato, M, Mc Cubbin, M, Mc Kay, R, Mc Nulty, R, Mc Pherson, G, Meroni, C, Meyer, WT, Miagkov, A, Migliore, E, Mirabito, L, Mitaroff, WA, Mjoernmark, U, Moa, T, Moch, M, Moeller, R, Moenig, K, Monge, MR, Moraes, D, Moreau, X, Morettini, P, Morton, G, Mueller, U, Muenich, K, Mulders, M, Mulet-Marquis, C, Muresan, R, Murray, WJ, Muryn, B, Myatt, G, Myklebust, T, Naraghi, F, Nassiakou, M, Navarria, FL, Navas, S, Nawrocki, K, Negri, P, Neufeld, N, Nicolaidou, R, Nielsen, BS, Niezurawski, P, Nikolenko, M, Nomokonov, V, Nygren, A, Obraztsov, V, Olshevski, AG, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palacios, J, Palka, H, Papadopouloum, TD, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Passon, O, Pavel, T, Pegoraro, M, Peralta, L, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, HT, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Pol, ME, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, PN, Read, AL, Rebecchi, P, Redaelli, NG, Regler, M, Rehn, J, Reid, D, Reinhardt, R, Renton, PB, Resvanis, LK, Richard, F, Ridky, J, Rinaudo, G, Ripp-Baudot, I, Rohne, O, Romero, A, Ronchese, P, Rosenberg, EI, Rosinsky, P, Roudeau, P, Rovelli, T, Royon, C, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, M, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schwemling, P, Schwering, B, Schwickerath, U, Scuri, F, Seager, P, Sedykh, Y, Segar, AM, Seibert, N, Sekulin, R, Shellard, RC, Siebel, M, Simard, L, Simonetto, F, Sisakian, AN, Smadja, G, Smirnova, O, Smith, GR, Solovianov, O, Sopczak, A, Sosnowski, R, Spassov, T, Spiriti, E, Squarcia, S, Stanescu, C, Stanic, S, Stanitzki, M, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Taffard, A, Tegenfeldt, F, Terranova, F, Thomas, J, Timmermans, J, Tinti, N, Tkatchev, LG, Tobin, M, Todorova, S, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Tortosa, P, Transtromer, G, Treille, D, Tristram, G, Trochimczuk, M, Troncon, C, Turluer, ML, Tyapkin, IA, Tyapkin, P, Tzamarias, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Van Dam, P, Van den Boeck, W, Van Doninck, WK, Van Eldik, J, Van Lysebetten, A, van Remortel, N, Van Vulpen, I, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verdier, P, Verlato, M, Vertogradov, LS, Verzi, V, Vilanova, D, Vitale, L, Vlasov, E, Vodopyanov, AS, Voulgaris, G, Vrba, V, Wahlen, H, Walck, C, Washbrook, AJ, Weiser, C, Wicke, D, Wickens, JH, Wilkinson, GR, Winter, M, Witek, M, Wolf, G, Yi, J, Yushchenko, O, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, NI, Zintchenko, A, Zoller, P, Zucchelli, GC, Zumerle, G, and Collaboration, DELPHI
Subjects: DETECTOR, DELPHI
Published: 2000

208. Determination of $P(c \to D^{*+})$ and $BR(c \to l^{+})$ at LEP1

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Azhinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G.D., Alemany, R., Allmendinger, T., Allport, P.P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E.G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W.D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D.Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K.H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Benekos, N.C., Benvenuti, A.C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M.S., Bizouard, M.A., Bloch, D., Blom, H.M., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P.S.L., Borgland, A.W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Boyko, I., Bozovic, I., Bozzo, M., Branchini, P., Brenke, T., Brenner, R.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Burgsmuller, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo Gimenez, M.V., Cattai, A., Cavallo, F.R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G.A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Cowell, J.H., Crawley, H.B., Crennell, D., Crepe, S., Crosetti, G., Cuevas Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Deghorain, A., Della Ricca, G., Delpierre, P., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J.D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Erzen, B., Espirito Santo, M., Falk, E., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A.G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Gorski, M., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Green, C., Grimm, H.J., Gris, P., Grosdidier, G., Grzelak, K., Gunther, M., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F.J., Hedberg, V., Heising, S., Hernandez, J.J., Herquet, P., Herr, H., Hessing, T.L., Heuser, J.M., Higon, E., Holmgren, S.O., Holt, P.J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hughes, G.J., Hultqvist, K., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E.K., Jonsson, P., Joram, C., Juillot, P., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E.C., Keranen, R., Kersevan, B.P., Khomenko, B.A., Khovansky, N.N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N.J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Koratzinos, M., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krstic, J., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J.W., Lane, D.W., Langefeld, P., Lapin, V., Laugier, J.P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liko, D., Lipniacka, A., Lippi, I., Lorstad, B., Loken, J.G., Lopes, J.H., Lopez, J.M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J.R., Maio, A., Malek, A., Malmgren, T.G.M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W.T., Myagkov, A., Migliore, E., Mirabito, L., Mjornmark, U., Moa, T., Moch, M., Moller, R., Monig, K., Monge, M.R., Moreau, X., Morettini, P., Morton, G., Muller, U., Munich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W.J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F.L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neufeld, N., Neumeister, N., Nicolaidou, R., Nielsen, B.S., Nikolenko, M., Nomokonov, V., Normand, A., Nygren, A., Obraztsov, V., Olshevsky, A.G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T.D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M.E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P.N., Read, A.L., Rebecchi, P., Redaelli, N.G., Regler, M., Reid, D., Reinhardt, R., Renton, P.B., Resvanis, L.K., Richard, F., Ridky, J., Rinaudo, G., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E.I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schneider, H., Schwemling, P., Schwering, B., Schwickerath, U., Schyns, M.A.E., Scuri, F., Seager, P., Sedykh, Yu., Segar, A.M., Sekulin, R., Shellard, R.C., Sheridan, A., Siebel, M., Simard, L., Simonetto, F., Sisakian, A.N., Smadja, G., Smirnov, N., Smirnova, O., Smith, G.R., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stanic, S., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkachev, L.G., Todorova, S., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Tsirou, A., Turluer, M.L., Tyapkin, I.A., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Apeldoorn, G.W., Van Dam, P., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L.S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A.S., Vollmer, C., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Weiser, C., Wicke, D., Wickens, J.H., Wilkinson, G.R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N.I., Zucchelli, G.C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), and DELPHI
Subjects: High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment
Abstract: The probability $P(c \rightarrow D^{*+})$ that a charm quark fragments into a $D^{*+}$ meson and the $c \rightarrow l^+$ semileptonic branching fraction were measured in $Z^0\ $ decay into $c\bar{c}$ events. \par % A double tag method based % on the detection of exclusively reconstructed $D$ mesons % accompanied by a slow pion or a lepton in the opposite hemisphere was used.\par From the analysis of 3.5 Million $Z^0\ $ events collected from 1992 to 1995, a sample of charm meson decays with $81\%$ $c\bar{c}$ purity was selected. % In this sample, a signal of $2371\pm140$ low momentum pions % originating from a $D^{*\pm}$ decay in the opposite hemisphere % was observed. The product of the $c \rightarrow D^{*+}$ fragmentation probability times the $D^{*+}\rightarrow D^0\pi^+$ branching fraction was measured to be: \begin{eqnarray*} P(c \rightarrow D^{*+})\cdot BR(D^{*+}\rightarrow D^0\pi^+) = 0.174\pm0.010(stat) \pm0.004(syst) \; . \end{eqnarray*} Using the world averaged value for $BR(D^{*+}\rightarrow D^0\pi^+)$, the fragmentation probability is inferred: \begin{eqnarray*} P(c \rightarrow D^{*+}) = 0.255\pm0.015(stat) \pm0.006(syst) \pm0.005 (syst.BR) \; . \end{eqnarray*} From the same sample, $1828\pm 51$ identified leptons in the opposite hemisphere were selected. From this sample, the charm semileptonic branching fraction was measured to be: \begin{eqnarray*} BR(c \rightarrow l^+) = 0.0958\pm0.0042(stat) \pm0.0028(syst) \; . \end{eqnarray*}
Published: 2000

209. Determination of P(c -> D*(+)) and BR(c -> l(+)) at LEP 1

Author: Abreu, P, Adam, W, Adye, T, Adzic, P, Ajinenko, I, Albrecht, Z, Alderweireld, T, Alekseev, Gd, Alemany, R, Allmendinger, T, Allport, Pp, Almehed, S, Amaldi, U, Amapane, N, Amato, S, Anassontzis, Eg, Andersson, P, Andreazza, A, Andringa, S, Antilogus, P, Apel, Wd, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Barbier, R, Bardin, Dy, Barker, G, Baroncelli, A, Battaglia, M, Baubillier, M, Becks, Kh, Begalli, M, Behrmann, A, Beilliere, P, Belokopytov, Y, Benekos, Nc, Benvenuti, Ac, Berat, C, Berggren, M, Bertini, D, Bertrand, D, Besancon, M, Bigi, M, Bilenky, Ms, Bizouard, Ma, Bloch, D, Blom, Hm, Bonesini, M, Bonivento, W, Boonekamp, M, Booth, Psl, Borgland, Aw, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Boyko, I, Bozovic, I, Bozzo, M, Branchini, P, Brenke, T, Brenner, Ra, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschbeck, B, Buschmann, P, Cabrera, S, Caccia, Massimo, Calvi, M, Camporesi, T, Canale, V, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Chabaud, V, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, Ga, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cieslik, K, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Cowell, Jh, Crawley, Hb, Crennell, D, Crepe, S, Crosetti, G, Maestro, Jc, Czellar, S, Davenport, M, DA SILVA, W, Deghorain, A, DELLA RICCA, G, Delpierre, P, Demaria, N, DE ANGELIS, A, DE BOER, W, DE CLERCQ, C, DE LOTTO, B, DE MIN, A, DE PAULA, L, Dijkstra, H, DI CIACCIO, L, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Dris, M, Duperrin, A, Durand, Jd, Eigen, G, Ekelof, T, Ekspong, G, Ellert, M, Elsing, M, Engel, Jp, Erzen, B, Santo, Me, Falk, E, Fanourakis, G, Fassouliotis, D, Fayot, J, Feindt, M, Ferrari, P, Ferrer, A, FERRER RIBAS, E, Ferro, F, Fichet, S, Firestone, A, Flagmeyer, U, Foeth, H, Fokitis, E, Fontanelli, F, Franek, B, Frodesen, Ag, Fruhwirth, R, FULDA QUENZER, F, Fuster, J, Galloni, A, Gamba, D, Gamblin, S, Gandelman, M, Garcia, C, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerdyukov, L, Ghodbane, N, Gil, I, Glege, F, Gokieli, R, Golob, B, GOMEZ CEBALLOS, G, Goncalves, P, Caballero, Ig, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Grahl, J, Graziani, E, Green, C, Grimm, Hj, Gris, P, Grosdidier, G, Grzelak, K, Gunther, M, Guy, J, Hahn, F, Hahn, S, Haider, S, Hallgren, A, Hamacher, K, Hansen, J, Harris, Fj, Hedberg, V, Heising, S, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Heuser, Jm, Higon, E, Holmgren, So, Holt, Pj, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hughes, Gj, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, JEAN MARIE, B, Johansson, Ek, Jonsson, P, Joram, C, Juillot, P, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, Ec, Keranen, R, Kersevan, Bp, Khomenko, Ba, Khovanski, Nn, Kiiskinen, A, King, B, Kinvig, A, Kjaer, Nj, Klapp, O, Klein, H, Kluit, P, Kokkinias, P, Koratzinos, M, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kriznic, E, Krstic, J, Krumstein, Z, Kubinec, P, Kurowska, J, Kurvinen, K, Lamsa, Jw, Lane, Dw, Langefeld, P, Lapin, V, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Leinonen, L, Leisos, A, Leitner, R, Lenzen, G, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liko, D, Lipniacka, A, Lippi, I, Loerstad, B, Loken, Jg, Lopes, Jh, Lopez, Jm, LOPEZ FERNANDEZ, R, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Mahon, Jr, Maio, A, Malek, A, Malmgren, Tgm, Maltezos, S, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, MARTINEZ RIVERO, C, MARTINEZ VIDAL, F, GARCIA SM, I., Masik, J, Mastroyiannopoulos, N, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, F, Mazzucato, M, MC CUBBIN, M, MC KAY, R, MC NULTY, R, MC PHERSON, G, Meroni, C, Meyer, Wt, Miagkov, A, Migliore, E, Mirabito, L, Mjoernmark, U, Moa, T, Moch, M, Moeller, R, Moenig, K, Monge, Mr, Moreau, X, Morettini, P, Morton, G, Mueller, U, Muenich, K, Mulders, M, MULET MARQUIS, C, Muresan, R, Murray, Wj, Muryn, B, Myatt, G, Myklebust, T, Naraghi, F, Nassiakou, M, Navarria, Fl, Navas, S, Nawrocki, K, Negri, P, Nemecek, S, Neufeld, N, Neumeister, N, Nicolaidou, R, Nielsen, Bs, Nikolenko, M, Nomokonov, V, Normand, A, Nygren, A, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palacios, J, Palka, H, Papadopoulou, Td, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Passon, O, Pegoraro, M, Peralta, L, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, Ht, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Ratoff, Pn, Read, Al, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Reinhardt, R, Renton, Pb, Resvanis, Lk, Richard, F, Ridky, J, Rinaudo, G, Rohne, O, Romero, A, Ronchese, P, Rosenberg, Ei, Rosinsky, P, Roudeau, P, Rovelli, T, Royon, C, RUHLMANN KLEIDER, V, Ruiz, A, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schneider, H, Schwemling, P, Schwering, B, Schwickerath, U, Schyns, Mae, Scuri, F, Seager, P, Sedykh, Y, Segar, Am, Sekulin, R, Shellard, Rc, Sheridan, A, Siebel, M, Simard, L, Simonetto, F, Sisakian, An, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Solovianov, O, Sopczak, A, Sosnowski, R, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stanic, S, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tegenfeldt, F, Terranova, F, Thomas, J, Timmermans, J, Tinti, N, Tkatchev, Lg, Todorova, S, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Tristram, G, Trochimczuk, M, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tzamarias, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, VAN APELDOORN GW, VAN DAM, P, VAN ELDIK, J, VAN LYSEBETTEN, A, VAN REMORTEL, N, VAN VULPEN, I, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Verzi, V, Vilanova, D, Vitale, L, Vlasov, E, Vodopyanov, As, Vollmer, C, Voulgaris, G, Vrba, V, Wahlen, H, Walck, C, Weiser, C, Wicke, D, Wickens, Jh, Wilkinson, Gr, Winter, M, Witek, M, Wolf, G, Yi, J, Yushchenko, O, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zucchelli, Gc, and Zumerle, G.
Published: 2000

210. A Precise Measurement of the $\tau$ Polarisation at LEP-1

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G.D., Alemany, R., Allmendinger, T., Allport, P.P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E.G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W.D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D.Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K.H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Benekos, N.C., Benvenuti, A.C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M.S., Bizouard, M.A., Bloch, D., Blom, H.M., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P.S.L., Borgland, A.W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo Gimenez, M.V., Cattai, A., Cavallo, F.R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G.A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H.B., Crennell, D., Crepe, S., Crosetti, G., Cuevas Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P.A., Demaria, N., De Angelis, A., De Boer, W., De Brabandere, S., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J.D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Fenyuk, A., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A.G., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F.J., Hedberg, V., Heising, S., Hernandez, J.J., Herquet, P., Herr, H., Hessing, T.L., Heuser, J.M., Higon, E., Holmgren, S.O., Holt, P.J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G.J., Hultqvist, K., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E.K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E.C., Keranen, R., Kernel, G., Kersevan, B.P., Khomenko, B.A., Khovanskii, N.N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N.J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krstic, J., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J.W., Lane, D.W., Lapin, V., Laugier, J.P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J.G., Lopes, J.H., Lopez, J.M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J.R., Maio, A., Malek, A., Malmgren, T.G.M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W.T., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W.A., Mjornmark, U., Moa, T., Moch, M., Moller, R., Monig, K., Monge, M.R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W.J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F.L., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B.S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V.F., Olshevskii, A.G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T.D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M.E., Polok, G., Polycarpo, E., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P.N., Read, A.L., Rebecchi, P., Redaelli, N.G., Regler, M., Rehn, J., Reid, D., Reinhardt, R., Renton, P.B., Resvanis, L.K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E.I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, A.M., Seibert, N., Sekulin, R., Shellard, R.C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A.N., Smadja, G., Smirnov, N., Smirnova, O., Smith, G.R., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L.G., Tobin, M., Todorova, S., Tomaradze, A.G., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M.L., Tyapkin, I.A., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Dam, P., Vanden Boeck, W., Van Doninck, W.K., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L.S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A.J., Weiser, C., Wicke, D., Wickens, J.H., Wilkinson, G.R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N.I., Zintchenko, A., Zoller, P., Zucchelli, G.C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Poropat, Paolo, Vitale, Lorenzo, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), UCL - SST/IRMP - Institut de recherche en mathématique et physique, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), DEPHI Collaboration, and Delphi (IHEF, IoP, FNWI)
Subjects: Particle physics, COLLISIONS, scientific information, POLARIZATION, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, ENERGIES, Electron–positron annihilation, Hadron, 01 natural sciences, Computer Science::Digital Libraries, DECAYS, Partícules (Física nuclear), information, PHYSICS, NEUTRINO HELICITY, BHABHA SCATTERING, Open Access, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], RADIATIVE-CORRECTIONS, Computer Science::Symbolic Computation, 010306 general physics, Engineering (miscellaneous), MICHEL PARAMETERS, Bhabha scattering, DELPHI, Physics, 010308 nuclear & particles physics, communication, High Energy Physics::Phenomenology, epistemology, Weinberg angle, Polarization (waves), LARGE ELECTRON POSITRON COLLIDER, PARTICLE PHYSICS, Michel parameters, Angular dependence, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment, Open Society Institute, Lepton
Abstract: The $\tau$ polarisation has been studied with the ${\rm e^+e^-}\to \tau^+\tau^-$ data collected by the DELPHI detector at LEP in 1993, 1994 and 1995 around the Z resonance firstly through the exclusive decay channels ${\rm e}\nu\bar{\nu}$ , $\mu\nu\bar{\nu}$ , $\pi\nu$ , $\rho\nu$ and ${\rm a}_1\nu$ and secondly with an inclusive hadronic analysis which benefits from a higher efficiency and a better systematic precision. The results have been combined with those previously published on 1990 to 1992 DELPHI data, to produce results which reflect the full LEP-1 statistics. The fit of the $\tau$ polarisation dependence on the production angle yielded the polarisation parameters ${\cal A}_{_{\scriptstyle \!\tau}}=0.1359 \pm 0.0096$ and ${\cal A}_{_{\scriptstyle \!e}}=0.1382 \pm 0.0116$ . From these results the ratio of the vector and axial-vector effective couplings $\bar{v}_{\tau} / \bar{a}_{\tau} = 0.0683\pm0.0048$ and $\bar{v}_{\rm e} / \bar{a}_{\rm e} = 0.0694\pm0.0058$ have been derived, compatible with e $-\tau$ universality. With the assumption of lepton universality, the ratio of vector to axial-vector effective couplings for leptons $\bar{v}_l / \bar{a}_l = 0.0687\pm0.0037$ was obtained, implying a value of the effective weak mixing angle $\sin^{2}\theta^{\rm lept}_{\rm eff} = 0.23282\pm0.00092$ .
Published: 2000

211. Charged and Identified Particles in the Hadronic Decay of W Bosons and in $e^{+} e^{-} \to q\overline{q}$ from 130 to 200 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G.D., Alemany, R., Allmendinger, T., Allport, P.P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E.G., Andersson, P., Andreazza, A., Andringa, S., Anjos, N., Antilogus, P., Apel, W-D., Arnoud, Y., Asman, B., Augustin, J-E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D.Y., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K-H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., Benekos, N.C., Benvenuti, A.C., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenky, M.S., Bizouard, M-A., Bloch, D., Blom, H.M., Bonesini, M., Boonekamp, M., Booth, P.S.L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R.A., Bruckman, P., Brunet, J-M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., M.Castillo Gimenez, V., Cattai, A., Cavallo, F.R., Chabaud, V., Chapkin, M., Charpentier, Ph., Checchia, P., Chelkov, G.A., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H.B., Crennell, D., Crepe, S., Crosetti, G., Cuevas Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J-D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J-P., Espirito Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A.G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, Ph., Gazis, E.N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Gouz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F.J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J.J., Herquet, P., Herr, H., Hessing, T.L., Heuser, J.M., Higon, E., Holmgren, S-O., Holt, P.J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G.J., Hultqvist, K., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, Ch., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E.K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E.C., Keranen, R., Kernel, G., Kersevan, B.P., Khokhlov, Yu., Khomenko, B.A., Khovanski, N.N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N.J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J.W., Lane, D.W., Lapin, V., Laugier, J-P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J.G., Lopes, J.H., Lopez, J.M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J.R., Maio, A., Malek, A., Malmgren, T.G.M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J-C., Mariotti, C., Markou, A., Martinez-Rivero, C., Marti i Garcia, S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Cubbin, M.Mc, Kay, R.Mc, Nulty, R.Mc, Pherson, G.Mc, Meroni, C., Metreveli, Z., Meyer, W.T., Miagkov, A., Migliore, E., Mirabito, L., Mitaroff, W.A., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, M.R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W.J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F.L., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B.S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V., Olshevski, A.G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, Th.D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M.E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P.N., Read, A.L., Rebecchi, P., Redaelli, N.G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P.B., Resvanis, L.K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E.I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, Ch., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, Ph., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, A.M., Seibert, N., Sekulin, R., Shellard, R.C., Siebel, M., Simard, L., Simonetto, F., Sisakian, A.N., Smadja, G., Smirnova, O., Smith, G.R., Solovianov, O., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L.G., Tobin, M., Todorova, S., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M-L., Tyapkin, I.A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Dam, P., Van den Boeck, W., Van Eldik, J., Van Lysebetten, A., van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L.S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A.S., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A.J., Weiser, C., Wicke, D., Wickens, J.H., Wilkinson, G.R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimine, N.I., Zintchenko, A., Zoller, Ph., Zucchelli, G.C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Inclusive distributions of charged particles in hadronic Wdecays are experimentally investigated using the statisticscollected by the DELPHI experiment at LEP during 1997, 1998and 1999, at centre-of-mass energies from 183 to around 200 GeV.The possible effects of interconnection betweenthe hadronic decays of two Ws are not observed.Measurements of the average multiplicity for charged and identified particles in q$\bar{\mathrm q}$ and WW events at centre-of-mass energies from 130 to 200 GeV and in W decays are presented.The results on the average multiplicity of identified particlesand on the position $\xi^*$ of the maximum of the maximum of$\xi_p = -\mathrm{log} (\frac{2p}{\sqrt{s}})$distribution are compared with predictionsof JETSET and MLLA calculations. Inclusive distributions of charged particles in hadronic W decays are experimentally investigated using the statistics collected by the DELPHI experiment at LEP during 1997, 1998 and 1999, at centre-of-mass energies from 183 to around 200 GeV. The possible effects of interconnection between the hadronic decays of two Ws are not observed. Measurements of the average multiplicity for charged and identified particles in q qbar and WW events at centre-of-mass energies from 130 to 200 GeV and in W decays are presented. The results on the average multiplicity of identified particles and on the position xi^* of the maximum of the xi_p = -log(2p/sqrt(s)) distribution are compared with predictions of JETSET and MLLA calculations.
Published: 2000

212. A precise measurement of the τ polarisation at LEP-1

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Ajinenko, I. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Asman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Bonivento, W. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Bracko, M. Branchini, P. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. Da Silva, W. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boer, W. de Brabandere, S. De Clercq, C. De Lotto, B. De Min, A. De Paula, L. Dijkstra, H. di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Espirito Santo, M. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Fenyuk, A. Ferrari, P. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerdyukov, L. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Gris, P. Grosdidier, G. Grzelak, K. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huber, M. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Jeans, D. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Jungermann, L. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kernel, G. Kersevan, B.P. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krstic, J. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liebig, W. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Miagkov, A. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moraes, D. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neufeld, N. Nicolaidou, R. Nielsen, B.S. Niezurawski, P. Nikolenko, M. Nomokonov, V. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pavel, T. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Polycarpo, E. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Rehn, J. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Ripp-Baudot, I. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schwemling, Ph. Schwering, B. Schwickerath, U. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Seibert, N. Sekulin, R. Shellard, R.C. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Squarcia, S. Stanescu, C. Stanic, S. Stanitzki, M. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Taffard, A. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Tobin, M. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Tortosa, P. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Van Dam, P. Van den Boeck, W. Van Doninck, W.K. Van Eldik, J. Van Lysebetten, A. van Remortel, N. Van Vulpen, I. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Washbrook, A.J. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zintchenko, A. Zoller, Ph. Zucchelli, G.C. Zumerle, G.
Abstract: The τ polarisation has been studied with the e+e- → τ+τ- data collected by the DELPHI detector at LEP in 1993, 1994 and 1995 around the Z resonance firstly through the exclusive decay channels evv̄, μvvμ, πv, ρv, and a1v and secondly with an inclusive hadronic analysis which benefits from a higher efficiency and a better systematic precision. The results have been combined with those previously published on 1990 to 1992 DELPHI data, to produce results which reflect the full LEP-1 statistics. The fit of the τ polarisation dependence on the production angle yielded the polarisation parameters Aτ = 0.1359 ± 0.0096 and Ae = 0.1382 ± 0.0116. From these results the ratio of the vector and axial-vector effective couplings v̄τ/āτ = 0.0683 ± 0.0048 and v̄e/āe = 0.0694 ± 0.0058 have been derived, compatible with e-τ universality. With the assumption of lepton universality, the ratio of vector to axial-vector effective couplings for leptons v̄ι/āι = 0.0687 ± 0.0037 was obtained, implying a value of the effective weak mixing angle sin2 θlepteff= 0.23282 ± 0.00092.
Published: 2000

213. Measurements of the Z partial decay width into $c\overline{c}$ and multiplicity of charm quarks per b decay

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Azhinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G.D., Alemany, R., Allmendinger, T., Allport, P.P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E.G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W.D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D.Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K.H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Benekos, N.C., Benvenuti, A.C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M.S., Bizouard, M.A., Bloch, D., Blom, H.M., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P.S.L., Borgland, A.W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Boyko, I., Bozovic, I., Bozzo, M., Branchini, P., Brenke, T., Brenner, R.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Burgsmuller, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo Gimenez, M.V., Cattai, A., Cavallo, F.R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G.A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Cowell, J.H., Crawley, H.B., Crennell, D., Crepe, S., Crosetti, G., Cuevas Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Deghorain, A., Della Ricca, G., Delpierre, P., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J.D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Erzen, B., Espirito Santo, M., Falk, E., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A.G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Gorski, M., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Green, C., Grimm, H.J., Gris, P., Grosdidier, G., Grzelak, K., Gunther, M., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F.J., Hedberg, V., Heising, S., Hernandez, J.J., Herquet, P., Herr, H., Hessing, T.L., Heuser, J.M., Higon, E., Holmgren, S.O., Holt, P.J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hughes, G.J., Hultqvist, K., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E.K., Jonsson, P., Joram, C., Juillot, P., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E.C., Keranen, R., Kersevan, B.P., Khomenko, B.A., Khovansky, N.N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N.J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Koratzinos, M., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Kriznic, E., Krstic, P., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J.W., Lane, D.W., Langefeld, P., Lapin, V., Laugier, J.P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liko, D., Lipniacka, A., Lippi, I., Lorstad, B., Loken, J.G., Lopes, J.H., Lopez, J.M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J.R., Maio, A., Malek, A., Malmgren, T.G.M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W.T., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W.A., Mjornmark, U., Moa, T., Moch, M., Moller, R., Monig, K., Monge, M.R., Moreau, X., Morettini, P., Morton, G., Muller, U., Munich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W.J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F.L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neufeld, N., Neumeister, N., Nicolaidou, R., Nielsen, B.S., Nikolenko, M., Nomokonov, V., Normand, A., Nygren, A., Obraztsov, V., Olshevsky, A.G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T.D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M.E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P.N., Read, A.L., Rebecchi, P., Redaelli, N.G., Regler, M., Reid, D., Reinhardt, R., Renton, P.B., Resvanis, L.K., Richard, F., Ridky, J., Rinaudo, G., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E.I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schneider, Henri, Schwemling, P., Schwering, B., Schwickerath, U., Schyns, M.A.E., Scuri, F., Seager, P., Sedykh, Yu., Segar, A.M., Sekulin, R., Shellard, R.C., Sheridan, A., Siebel, M., Simard, L., Simonetto, F., Sisakian, A.N., Smadja, G., Smirnova, O., Smith, G.R., Sokolov, A., Sopczak, A., Sosnowski, R., Spassoff, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stanic, S., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Chikilev, O., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkachev, L.G., Todorova, S., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Tsirou, A., Turluer, M.L., Tyapkin, I.A., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., Van Apeldoorn, G.W., Van Dam, P., Van Doninck, W.K., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vassilopoulos, N., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L.S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A.S., Vollmer, C., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Weiser, C., Wicke, D., Wickens, J.H., Wilkinson, G.R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N.I., Zucchelli, G.C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear Theory, High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract: The partial decay width $R_c$ of the $Z$ into $c\bar{c}$ quark pair and the number of charm quarks $n_c$ per $b$ decay are measured with the DELPHI detector at \mbox{LEP 1}. Particle identification provides clear $D^0$, $D^+$, $D_s^+$ and $\Lambda_c^+$ signatures. The charm hadron production rate is measured in each channel by a fit to the scaled energy, impact parameter information and the invariant mass spectrum. Two measurements of $R_c$ are presented, from the $D^{*+}$ production rate and from the overall charm counting, including strange charm baryon production, in $c\bar{c}$ events. The multiplicity $n_c$, which includes hidden $c\bar{c}$ and strange charm baryon production, is inferred from the charm counting in $b\bar{b}$ events. The final results are $R_c = 0.1665 \pm 0.0095$ and $n_c = 1.166 \pm 0.086$.
Published: 2000

214. Cross-sections and leptonic forward-backward asymmetries from the Z(0) running of LEP

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Alekseev, G D., Alemany, R., Allport, P P., Almehed, S., Amaldi, U., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Beilliere, P., Belokopytov, Yu., Benvenuti, a C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bianchi, F., Bigi, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P S L., Borgland, a W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Branchini, P., Brenke, T., Brenner, R A., Brueckman, P., Brunet, J M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camacho Rozas, a J., Camporesi, T., Canale, V., Canepa, M., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Cerruti, C., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G A., Chen, M., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Collins, P., Colomer, M., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Cowell, J H., Crawley, H B., Crennell, D., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Dalmagne, B., Damgaard, G., Davenport, M., da Silva, W., Deghorain, A., Della Ricca, G., Delpierre, P A., Demaria, N., de Angelis, A., de Boer, W., de Brabandere, S., de Clercq, C., de Lotto, B., de Min, A., de Paula, L., Dijkstra, H., Di Ciaccio, L., Di Diodato, A., Djannati, A., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Drees, K A., Dris, M., Duperrin, A., Durand, J D., Ehret, R., Eigen, G., Ekeloef, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Erzen, B., Espirito-Santo, M C., Falk, E., Fanourakis, G K., Fassouliotis, D., Fayot, J., Feindt, M., Fenyuk, A., Ferrari, P., Ferrer, A., Fichet, S., Firestone, A., Fischer, P.A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, a G., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Gerber, J.P., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Gorski, M., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Green, C., Grefrath, A., Gris, P., Grzelak, K., Gunther, M., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Harris, F J., Hedberg, V., Heising, S., Henriques, R., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keraenen, R., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Knoblauch, D., Kokkinias, P., Konoplyannikov, A., Koratzinos, M., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kreuter, C., Kriznic, E., Krstic, J., Krumshtein, Z., Kubinec, P., Kucewicz, W., Kurvinen, K., Lamsa, J W., Lanceri, L., Lane, D W., Langefeld, P., Lapin, V., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T G M., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Masik, J., Mazzucato, F., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Mcpherson, G., Meroni, C., Migliore, E., Mirabito, L., Mitaroff, W A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M R., Moreau, X., Morettini, P., Morton, G., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B S., Nieuwenhuizen, M., Nikolaenko, V., Nikolenko, M., Nomokonov, V., Normand, A., Nygren, A., Obraztsov, V F., Olshevskii, a G., Onofre, A., Orava, R., Orazi, G., Oesterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Piana, G., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rakoczy, D., Ratoff, P N., Read, a L., Rebecchi, P., Redaelli, N G., Regler, M., Reid, D., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schneider, Henri, Schwemling, P., Schwickerath, U., Schyns, M a E., Scuri, F., Seager, P., Sedykh, Yu., Segar, a M., Sekulin, R., Shellard, R C., Sheridan, A., Silvestre, R., Simard, L., Simonetto, F., Sissakian, a N., Skaali, T B., Smadja, G., Smirnova, O., Smith, G R., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Sponholz, P., Squarcia, S., Stampfer, D., Stanescu, C., Stanic, S., Stapnes, S., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli de Fatis, T., Tegenfeldt, F., Terranova, F., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L G., Todorov, T., Todorova, S., Toet, D Z., Tomaradze, a G., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M L., Tyapkin, I A., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., van Apeldoorn, G W., van Dam, P., van Doninck, W K., van Eldik, J., van Lysebetten, A., van Vulpen, I., Vassilopoulos, N., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Weiser, C., Wetherell, a M., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wlodek, T., Wolf, G., Yi, J., Yushchenko, O., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Delphi (IHEF, IoP, FNWI), Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Particle physics, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), Electron–positron annihilation, SQUARE-ROOT-S=29 GEV, Hadron, CHARGE ASYMMETRIES, 01 natural sciences, Resonance (particle physics), Luminosity, Standard Model, Nuclear physics, MONTE-CARLO, SLC ENERGIES, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], RADIATIVE-CORRECTIONS, ANGLE BHABHA SCATTERING, 010306 general physics, Engineering (miscellaneous), DELPHI, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Order (ring theory), Weinberg angle, MUON-PAIR PRODUCTION, SQUARE-ROOT-S, LARGE ELECTRON POSITRON COLLIDER, OF-MASS ENERGIES, PARTICLE PHYSICS, Large Electron–Positron Collider, High Energy Physics::Experiment, Física nuclear, Particle Physics - Experiment
Abstract: During 1993 and 1995 LEP was run at 3 energies near the Z $^0$ peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z $^0$ peak. In total DELPHI accumulated data corresponding to an integrated luminosity of approximately 116 pb $^{-1}$ . Analyses of the hadronic cross-sections and of the cross-sections and forward-backward asymmetries in the leptonic channels used the most precise evaluations of the LEP energies. In the dimuon channel, events with a photon radiated from the initial state have been used to probe the cross-sections and asymmetries down to PETRA energies. Model independent fits to all DELPHI lineshape and asymmetry data from 1990 to 1995 have been carried out giving values of the resonance parameters: \begin{eqnarray*} M_Z & = & 91.1863\pm0.0028{\mbox{\rm{GeV}}} {\mbox{\rm{GeV}}} & = & 2.4876\pm0.0041{\mbox{\rm{GeV}}} \sigma_{0} & = & 41.578\pm0.069{\mbox{\rm{nb}}} R_l & = & 20.730\pm0.060 {\rm{A^{0}_{\mbox{\scriptsize FB}}}} & = & 0.0187\pm0.0019. \end{eqnarray*} These values are significantly more precise than those previously published. The results are interpreted in terms of the Standard Model.
Published: 2000

215. Cross-sections and leptonic forward-backward asymmetries from the Z0 running of LEP

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Alekseev, G.D. Alemany, R. Allport, P.P. Almehed, S. Amaldi, U. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Y. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bianchi, F. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Bonesini, M. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Branchini, P. Brenke, T. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. CamachoRozas, A.J. Camporesi, T. Canale, V. Canepa, M. Carena, F. Carroll, L. Caso, C. CastilloGimenez, M.V. Cattai, A. Cavallo, F.R. Cerruti, Ch. Chabaud, V. Chapkin, M. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chen, M. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Collins, P. Colomer, M. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Cowell, J.-H. Crawley, H.B. Crennell, D. Crosetti, G. CuevasMaestro, J. Czellar, S. Dalmagne, B. Damgaard, G. Davenport, M. DaSilva, W. Deghorain, A. DellaRicca, G. Delpierre, P. Demaria, N. DeAngelis, A. DeBoer, W. DeBrabandere, S. DeClercq, C. DeLotto, B. DeMin, A. DePaula, L. Dijkstra, H. DiCiaccio, L. DiDiodato, A. Djannati, A. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Duperrin, A. Durand, J.-D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Erzen, B. EspiritoSanto, M. Falk, E. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Fenyuk, A. Ferrer, A. Fichet, S. Firestone, A. Fischer, P.-A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gerdyukov, L. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Goncalves, P. GonzalezCaballero, I. Gopal, G. Gorn, L. Gorski, M. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Green, C. Grefrath, A. Gris, P. Grzelak, K. Gunther, M. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Harris, F.J. Hedberg, V. Heising, S. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Knoblauch, D. Kokkinias, P. Konopliannikov, A. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kreuter, C. Kriznic, E. Krstic, J. Krumstein, Z. Kubinec, P. Kucewicz, W. Kurvinen, K. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. MartiiGarcia, S. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazik, J. Mazzucato, F. Mazzucato, M. McCubbin, M. McKay, R. McNulty, R. McPherson, G. Meroni, C. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neufeld, N. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nieuwenhuizen, M. Nikolaenko, V. Nikolenko, M. Nomokonov, V. Normand, A. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rakoczy, D. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schneider, H. Schwemling, Ph. Schwickerath, U. Schyns, M.A.E. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Sekulin, R. Shellard, R.C. Sheridan, A. Silvestre, R. Simard, L. Simonetto, F. Sisakian, A.N. Skaali, T.B. Smadja, G. Smirnova, O. Smith, G.R. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stampfer, D. Stanescu, C. Stanic, S. Stapnes, S. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tegenfeldt, F. Terranova, F. Thomas, J. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Todorova, S. Toet, D.Z. Tomaradze, A. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ueberschaer, B. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. VanderVelde, C. VanApeldoorn, G.W. VanDam, P. VanDoninck, W.K. VanEldik, J. VanLysebetten, A. VanVulpen, I. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Weiser, C. Wetherell, A.M. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wlodek, T. Wolf, G. Yi, J. Yushchenko, O. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Experiment
Abstract: During 1993 and 1995 LEP was run at 3 energies near the Z0 peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z0 peak. In total DELPHI accumulated data corresponding to an integrated luminosity of approximately 116 pb-1. Analyses of the hadronic cross-sections and of the cross-sections and forward-backward asymmetries in the leptonic channels used the most precise evaluations of the LEP energies. In the dimuon channel, events with a photon radiated from the initial state have been used to probe the cross-sections and asymmetries down to PETRA energies. Model independent fits to all DELPHI lineshape and asymmetry data from 1990 to 1995 have been carried out giving values of the resonance parameters: MZ = 91.1863 ± 0.0028 GeV ΓZ = 2.4876 ± 0.0041 GeV σ0 = 41.578 ± 0.069 nb R1 = 20.730 ± 0.060 AFB0 = 0.0187 ± 0.0019. These values are significantly more precise than those previously published. The results are interpreted in terms of the Standard Model.
Published: 2000

216. Measurements of the Z partial decay width into cc̄ and multiplicity of charm quarks per b decay

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Ajinenko, I. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Bonivento, W. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Branchini, P. Brenke, T. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Cowell, J.-H. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. da Silva, W. Deghorain, A. Della Ricca, G. Delpierre, P. Demaria, N. de Angelis, A. de Boer, W. de Clercq, C. de Lotto, B. de Min, A. de Paula, L. Dijkstra, H. di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Erzen, B. Espirito Santo, M. Falk, E. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrari, P. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerdyukov, L. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gorski, M. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Green, C. Grimm, H.-J. Gris, P. Grosdidier, G. Grzelak, K. Gunther, M. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kersevan, B.P. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kriznic, E. Krstic, P. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Langefeld, P. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Miagkov, A. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Nemecek, S. Neufeld, N. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nikolenko, M. Nomokonov, V. Normand, A. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schneider, H. Schwemling, Ph. Schwering, B. Schwickerath, U. Schyns, M.A.E. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Sekulin, R. Shellard, R.C. Sheridan, A. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnova, O. Smith, G.R. Sokolov, A. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stanescu, C. Stanic, S. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tchikilev, O. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. van Apeldoorn, G.W. van Dam, P. van Doninck, W.K. van Eldik, J. van Lysebetten, A. van Remortel, N. van Vulpen, I. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vollmer, C. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The partial decay width Rc of the Z into cc̄ quark pair and the number of charm quarks nc per b decay are measured with the DELPHI detector at LEP 1. Particle identification provides clear D0, D+, D+s and Λ+c signatures. The charm hadron production rate is measured in each channel by a fit to the scaled energy, impact parameter information and the invariant mass spectrum. Two measurements of Rc are presented, from the D*+ production rate and from the overall charm counting, including strange charm baryon production, in cc̄ events. The multiplicity nc, which includes hidden cc̄ and strange charm baryon production, is inferred from the charm counting in bb̄ events. The final results are Rc = 0.1665 ± 0.0095 and nc-= 1.166 ± 0.086.
Published: 2000

217. Search for SUSY with R-parity violating LL(E)over-bar couplings at root s=189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G., Alemany, R., Allmendinger, T., Allport, P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W., Arnoud, Y., Asman, B., Augustin, J., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Y., Belous, K., Benekos, N., Benvenuti, A., Berat, C., Berggren, M., Berntzon, L., Bertrand, D., Besancon, M., Bilenky, M., Bizouard, M., Bloch, D., Blom, H., Bonesini, M., Boonekamp, M., Booth, P., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T., Boyko, I., Bozovic, I., Bozzo, Marco, Bracko, M., Branchini, P., Brenner, R., Bruckman, P., Brunet, J., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Gimenez, M., Cattai, A., Cavallo, F., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H., Crennell, D., Crosetti, G., Maestro, J., Czellar, S., D'Hondt, J., Dalmau, J., Davenport, M., Silva, W. D., Ricca, G. D., Delpierre, P., Demaria, N., Angelis, A. D., Boer, W. D., Clercq, C. D., Lotto, B. D., Min, A. D., Paula, L. D., Dijkstra, H., Ciaccio, L. D., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Eigen, G., Ekelof, T., Ellert, M., Elsing, M., Engel, J., Santo, M., Fanourakis, G., Fassouliotis, D., Feindt, M., Fernandez, J., Ferrer, A., Ferrer Ribas, E., Ferro, F., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, Flavio, Franek, B., Frodesen, A., Fruhwirth, R., Fulda Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez Ceballos, G., Goncalves, P., Caballero, I., Gopal, C., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F., Hauler, F., Hedberg, V., Heising, S., Hernandez, J., Herquet, P., Herr, H., Higon, E., Holmgren, S., Holt, P., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Hughes, G., Hultqvist, K., Jackson, J., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean Marie, B., Jeans, D., Johansson, E., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E., Keranen, R., Kernel, G., Kersevan, B., Khokhlov, Y., Khomenko, B., Khovanski, N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N., Klapp, O., Kluit, P., Kokkinias, P., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J., Lane, D., Lapin, V., Laugier, J., Lauhakangas, R., Leder, G., Ledroit, F., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J., Lopes, J., Lopez, J., Lopez Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J., Maio, A., Malek, A., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J., Mariotti, C., Markou, A., Martinez Rivero, C., Garcia, S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Cubbin, M. M., Kay, R. M., Nulty, R. M., Pherson, G. M., Merle, E., Meroni, C., Meyer, W., Miagkov, A., Migliore, E., Mirabito, L., Mitaroff, W., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, MARIA ROBERTA, Moraes, D., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet Marquis, C., Mundim, L., Muresan, R., Murray, W., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V., Olshevski, A., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T., Pape, L., Parkes, C., Parodi, Fabrizio, Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, Alessandro, Phillips, H., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Poireau, V., Pol, M., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P., Read, A., Rebecchi, P., Redaelli, N., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P., Resvanis, L., Richard, F., Ridky, J., Rinaudo, G., Ripp Baudot, I., Romero, A., Ronchese, P., Rosenberg, E., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Savoy Navarro, A., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, A., Seibert, N., Sekulin, R., Sette, C., Shellard, R., Siebel, M., Simard, L., Simonetto, F., Sisakian, A., Smadja, G., Smirnova, O., Smith, G., Solovianov, O., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, Sandro, Stanescu, C., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tegenfeldt, F., Terranova, F., Timmermans, J., Tinti, N., Tkatchev, L., Tobin, M., Todorova, S., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M., Tyapkin, I., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Dam, P. V., Den, W. V., Eldik, J. V., Lysebetten, A. V., Remortel, N. v., Vulpen, I. V., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Washbrook, A., Weiser, C., Wicke, D., Wickens, J., Wilkinson, G., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zintchenko, A., Zoller, P., Zumerle, G., Zupan, M., and Collaboration, D.
Subjects: PHYSICS, BHABHA SCATTERING, LOWEST ORDER CALCULATIONS, ENERGIES, MONTE-CARLO SIMULATION, PROGRAM, RADIATIVE-CORRECTIONS, 2-PHOTON PROCESSES, SUPERSYMMETRY, WEAK
Published: 2000

218. Addendum to: Searches for Neutral Higgs Bosons in $e^+ e^-$ Collisions around $\sqrt{s}$ = 189 GeV

Author: Abreu, P, Adam, W, Adye, T, Adzic, P, Albrecht, Z, Alderweireld, T, Alekseev, G D, Alemany, R, Allmendinger, T, Allport, P P, Almehed, S, Amaldi, Ugo, Amapane, N, Amato, S, Anassontzis, E G, Andersson, P, Andreazza, A, Andringa, S, Antilogus, P, Apel, W D, Arnoud, Y, Åsman, B, Augustin, J E, Augustinus, A, Baillon, Paul, Bambade, P, Barão, F, Barbiellini, Guido, Barbier, R, Bardin, Dimitri Yuri, Barker, G, Baroncelli, A, Battaglia, Marco, Baubillier, M, Becks, K H, Begalli, M, Behrmann, A, Beillière, P, Belokopytov, Yu A, Belous, K S, Benekos, N C, Benvenuti, Alberto C, Bérat, C, Berggren, M, Bertini, D, Bertrand, D, Besançon, M, Bigi, M, Bilenky, S M, Bizouard, M A, Bloch, D, Blom, H M, Bonesini, M, Boonekamp, M, Booth, P S L, Borgland, A W, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, T J V, Boyko, I, Bozovic, I, Bozzo, M, Bracko, M, Branchini, P, Brenner, R A, Brückman, P, Brunet, J M, Bugge, L, Buran, T, Buschbeck, Brigitte, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Camporesi, T, Canale, V, Carena, F, Carroll, L, Caso, Carlo, Castillo-Gimenez, M V, Cattai, A, Cavallo, F R, Chabaud, V, Chapkin, M M, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, G A, Chierici, R, Shlyapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cieslik, K, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, H B, Crennell, D J, Crépé, S, Crosetti, G, Cuevas-Maestro, J, Czellar, S, Dalmau, J, Davenport, M, Da Silva, W, Della Ricca, G, Delpierre, P A, Demaria, N, De Angelis, A, de Boer, Wim, De Clercq, C, De Lotto, B, De Min, A, De Paula, L S, Dijkstra, H, Di Ciaccio, Lucia, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Dris, M, Duperrin, A, Durand, J D, Eigen, G, Ekelöf, T J C, Ekspong, Gösta, Ellert, M, Elsing, M, Engel, J P, Espirito-Santo, M C, Fanourakis, G K, Fassouliotis, D, Fayot, J, Feindt, Michael, Ferrer, A, Ferrer-Ribas, E, Ferro, F, Fichet, S, Firestone, A, Flagmeyer, U, Föth, H, Fokitis, E, Fontanelli, F, Franek, B J, Frodesen, A G, Frühwirth, R, Fulda-Quenzer, F, Fuster, J A, Galloni, A, Gamba, D, Gamblin, S, Gandelman, M, García, C, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, E N, Gelé, D, Ghodbane, N, Gil, I, Glege, F, Gokieli, R, Golob, B, Gómez-Ceballos, G, Gonçalves, P, González-Caballero, I, Gopal, Gian P, Gorn, L, Guz, Yu, Gracco, Valerio, Grahl, J, Graziani, E, Gris, P, Grosdidier, G, Grzelak, K, Guy, J, Hahn, F, Hahn, S, Haider, S, Hallgren, A, Hamacher, K, Hansen, J, Harris, F J, Hedberg, V, Heising, S, Hernández, J J, Herquet, P, Herr, H, Hessing, T L, Heuser, J M, Higón, E, Holmgren, S O, Holt, P J, Hoorelbeke, S, Houlden, M A, Hrubec, Josef, Huber, M, Huet, K, Hughes, G J, Hultqvist, K, Jackson, J N, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Jeans, D, Johansson, E K, Jönsson, P E, Joram, C, Juillot, P, Jungermann, L, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, E C, Keränen, R, Kernel, G, Kersevan, Borut P, Khokhlov, Yu A, Khomenko, B A, Khovanskii, N N, Kiiskinen, A P, King, B J, Kinvig, A, Kjaer, N J, Klapp, O, Klein, H, Kluit, P M, Kokkinias, P, Kostyukhin, V, Kourkoumelis, C, Kuznetsov, O, Krammer, Manfred, Kriznic, E, Krumshtein, Z, Kubinec, P, Kurowska, J, Kurvinen, K L, Lamsa, J, Lane, D W, Lapin, V, Laugier, J P, Lauhakangas, R, Leder, Gerhard, Ledroit, F, Lefébure, V, Leinonen, L, Leisos, A, Leitner, R, Lemonne, J, Lenzen, Georg, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liebig, W, Liko, D, Lipniacka, A, Lippi, I, Lörstad, B, Loken, J G, Lopes, J H, López, J M, López-Fernandez, R, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J N, Mahon, J R, Maio, A, Malek, A, Malmgren, T G M, Maltezos, S, Malychev, V, Mandl, F, Marco, J, Marco, R P, Maréchal, B, Margoni, M, Marin, J C, Mariotti, C, Markou, A, Martínez-Rivero, C, Martínez-Vidal, F, Martí i García, S, Masik, J, Mastroyiannopoulos, N, Matorras, F, Matteuzzi, C, Matthiae, Giorgio, Mazzucato, F, Mazzucato, M, McCubbin, M L, McKay, R, McNulty, R, McPherson, G, Meroni, C, Meyer, W T, Myagkov, A, Migliore, E, Mirabito, L, Mitaroff, Winfried A, Mjörnmark, U, Moa, T, Moch, M, Møller, R, Mönig, K, Monge, M R, Moreau, X, Morettini, P, Morton, G A, Müller, U, Münich, K, Mulders, M, Mulet-Marquis, C, Muresan, R, Murray, W J, Muryn, B, Myatt, Gerald, Myklebust, T, Naraghi, F, Nassiakou, M, Navarria, Francesco Luigi, Navas, S, Nawrocki, K, Negri, P, Neufeld, N, Nicolaidou, R, Nielsen, B S, Niezurawski, P, Nikolenko, M, Nomokonov, V P, Nygren, A, Obraztsov, V F, Olshevskii, A G, Onofre, A, Orava, Risto, Orazi, G, Österberg, K, Ouraou, A, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palacios, J, Palka, H, Papadopoulou, T D, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Passon, O, Pavel, T, Pegoraro, M, Peralta, L, Pernicka, Manfred, Perrotta, A, Petridou, C, Petrolini, A, Phillips, H T, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Pol, M E, Polok, G, Poropat, P, Pozdnyakov, V, Privitera, P, Pukhaeva, N, Pullia, Antonio, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P N, Read, A L, Rebecchi, P, Redaelli, N G, Regler, Meinhard, Rehn, J, Reid, D, Reinhardt, R, Renton, P B, Resvanis, L K, Richard, F, Rídky, J, Rinaudo, G, Ripp-Baudot, I, Røhne, O M, Romero, A, Ronchese, P, Rosenberg, E I, Rosinsky, P, Roudeau, Patrick, Rovelli, T, Royon, C, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Yu, Sadovskii, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schwemling, P, Schwering, B, Schwickerath, U, Scuri, F, Seager, P, Sedykh, Yu, Segar, A M, Seibert, N, Sekulin, R L, Shellard, R C, Siebel, M, Simard, L C, Simonetto, F, Sissakian, A N, Smadja, G, Smirnova, O G, Smith, G R, Solovyanov, O, Sopczak, André, Sosnowski, R, Spassoff, Tz, Spiriti, E, Squarcia, S, Stanescu, C, Stanic, S, Stanitzki, M, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli de Fatis, T, Taffard, A C, Tegenfeldt, F, Terranova, F, Thomas, J, Timmermans, J, Tinti, N, Tkatchev, L G, Tobin, M, Todorova-Nová, S, Tomaradze, A G, Tomé, B, Tonazzo, A, Tortora, L, Tortosa, P, Tranströmer, G, Treille, D, Tristram, G, Trochimczuk, M, Troncon, C, Turluer, M L, Tyapkin, I A, Tzamarias, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Van der Velde, C, van Dam, P, Van den Boeck, W, Van Doninck, W K, Van Eldik, J, Van Lysebetten, A, Van Remortel, N, Van Vulpen, I B, Vegni, G, Ventura, L, Venus, W A, Verbeure, F, Verlato, M, Vertogradov, L S, Verzi, V, Vilanova, D, Vitale, L, Vlasov, E, Vodopyanov, A S, Voulgaris, G, Vrba, V, Wahlen, H, Walck, C, Washbrook, A J, Weiser, C, Wicke, D, Wickens, J H, Wilkinson, G R, Winter, M, Witek, M, Wolf, G, Yi, J, Yushchenko, O P, Zalewska-Bak, A, Zalewski, Piotr, Zavrtanik, D, Zevgolatakos, E, Zimin, N I, Zinchenko, A I, Zoller, P, Zucchelli, G C, and Zumerle, G
Subjects: Particle Physics - Experiment
Abstract: A more general MSSM parameter scan is described
Published: 2000

219. Determination of vertical bar V-ub vertical bar/vertical bar V-cb vertical bar with DELPHI at LEP

Author: Abreu, P Adam, W Adye, T Adzic, P Albrecht, Z and Alderweireld, T Alekseev, GD Alemany, R Allmendinger, T and Allport, PP Almehed, S Amaldi, U Amapane, N Amato, S and Anassontzis, EG Andersson, P Andreazza, A Andringa, S and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F and Barbiellini, G Barbier, R Bardin, DY Barker, G and Baroncelli, A Battaglia, M Baubillier, M Becks, KH and Begalli, M Behrmann, A Beilliere, P Belokopytov, Y and Belous, K Benekos, M Benvenuti, AC Berat, C Berggren, M and Bertrand, D Besancon, M Bigi, M Bilenky, MS and Bizouard, MA Bloch, D Blom, HM Bonesini, M Boonekamp, M and Booth, PSL Borgland, AW Borisov, G Bosio, C Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Boyko, I Bozovic, I Bozzo, M Bracko, M Branchini, P and Brenner, RA Bruckman, P Brunet, JM Bugge, L Buran, T and Buschbeck, B Buschmann, P Cabrera, S Caccia, M Calvi, M and Camporesi, T Canale, V Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Chapkin, M Charpentier, P Checchia, P Chelkov, GA and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D Crepe, S Crosetti, G Maestro, JC Czellar, S Davenport, M Da Silva, W Della Ricca, G Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C Dolbeau, J Doroba, K and Dracos, M Drees, J Dris, M Duperrin, A Durand, JD and Eigen, G Ekelof, T Ekspong, G Ellert, M Elsing, M and Engel, MP Santo, ME Fanourakis, G Fassouliotis, D and Fayot, J Feindt, M Ferrer, A Ferrer-Ribas, E Ferro, F and Fichet, S Firestone, A Flagmeyer, U Foeth, H and Fokitis, E Fontanelli, F Franek, B Frodesen, AG and Fruhwirth, R Fulda-Quenzer, F Fuster, J Galloni, A and Gamba, D Gamblin, S Gandelman, M Garcia, C Gaspar, C and Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D and Ghodbane, N Gil, I Glege, F Gokieli, R Golob, B and Gomez-Ceballos, G Goncalves, P Caballero, IG Gopal, G and Gorn, L Gouz, Y Gracco, V Grahl, J Graziani, E Gris, P Grosdidier, G Grzelak, K Guy, J Haag, C Hahn, F and Hahn, S Haider, S Hallgren, A Hamacher, K Hansen, J and Harris, FJ Hedberg, V Heising, S Hernandez, JJ and Herquet, P Herr, H Hessing, TL Heuser, JM Higon, E and Holmgren, SO Holt, PJ Hoorelbeke, S Houlden, M Hrubec, J and Huber, M Huet, K Hughes, GJ Hultqvist, K Jackson, JN and Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P Jean-Marie, B Jeans, D Johansson, EK Jonsson, P Joram, C Juillot, P Jungermann, L and Kapusta, F Karafasoulis, K Katsanevas, S Katsoufis, EC and Keranen, R Kernel, G Kersevan, BP Khomenko, BA and Khovanski, NN Kiiskinen, A King, B Kinvig, A Kjaer, NJ and Klapp, O Klein, H Kluit, P Kokkinias, P and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Krammer, M and Kriznic, E Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Lapin, V Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A Leitner, R Lenzen, G Lepeltier, V and Lesiak, T Lethuillier, M Libby, J Liebig, W Liko, D and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopes, JH and Lopez, JM Lopez-Fernandez, R Loukas, D Lutz, P and Lyons, L MacNaughton, J Mahon, JR Maio, A Malek, A and Malmgren, TGM Maltezos, S Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI Masik, J Mastroyiannopoulos, N Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, F Mazzucato, M and McCubbin, M McKay, R McNulty, R McPherson, G Meroni, C and Meyer, WT Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K and Monge, MR Moraes, D Moreau, X Morettini, P Morton, G and Mueller, U Muenich, K Mulders, M Mulet-Marquis, C and Muresan, R Murray, WJ Muryn, B Myatt, G Myklebust, T and Naraghi, F Nassiakou, M Navarria, FL Navas, S Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS and Niezurawski, P Nikolenko, M Nomokonov, V Nygren, A and Obraztsov, V Olshevski, AG Onofre, A Orava, R Orazi, G and Osterberg, K Ouraou, A Paganoni, M Paiano, S Pain, R and Paiva, R Palacios, J Palka, H Papadopoulou, T and Papageorgiou, K Pape, L Parkes, C Parodi, F Parzefall, U and Passeri, A Passon, O Pavel, T Pegoraro, M Peralta, L and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Phillips, HT Pierre, F Pimenta, M Piotto, E Podobnik, T and Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S and Rahmani, H Rames, J Ratoff, PN Read, AL Rebecchi, P and Redaelli, NG Regler, M Rehn, J Reid, D Reinhardt, R and Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G and Ripp-Baudot, I Rohne, O Romero, A Ronchese, P and Rosenberg, EI Rosinsky, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Schwemling, P Schwering, B Schwickerath, U Scuri, F and Seager, P Sedykh, Y Segar, AM Seibert, N Sekulin, R and Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnova, O Smith, GR Sokolov, A and Solovianov, O Sopczak, A Sosnowski, R Spassov, T and Spiriti, E Squarcia, S Stanescu, C Stanic, S Stanitzki, M Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Taffard, A and Tegenfeldt, F Terranova, F Thomas, I Timmermans, J and Tinti, N Tkatchev, LG Tobin, M Todorova, S Tomaradze, A and Tome, B Tonazzo, A Tortora, L Tortosa, P and Transtromer, G Treille, D Tristram, G Trochimczuk, M and Troncon, C Turluer, ML Tyapkin, IA Tzamarias, S and Ullaland, O Uvarov, V Valenti, G Vallazza, E Vander Velde, C Van Dam, P Van den Boeck, W Van Doninck, WK Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I and Vegni, G Ventura, L Venus, W Verbeure, F Verdier, P and Verlato, M Vertogradov, LS Verzi, V Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS Voulgaris, G Vrba, V and Wahlen, H Walck, C Washbrook, AJ Weiser, C Wicke, D and Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G and Yi, J Yushchenko, O Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zintchenko, A and Zoller, P Zucchelli, GC Zumerle, G DELPHI Collaboration
Abstract: {The ratio of the CKM quark-mixing matrix elements \textbackslash{}V-ub\textbackslash{}/\textbackslash{}V-cb\textbackslash{ } has been measured using B hadron semileptonic decays. The analysis uses the reconstructed mass M-X of the secondary hadronic system produced in association with an identified lepton. Since B --> X(u)l (v) over bar transitions are characterised by hadronic masses below those of the D mesons produced in B --> X(c)l (v) over bar transitions, events with a reconstructed value of M-X significantly below the D mass are selected. Further signal enrichments are obtained using the topology of reconstructed decays and hadron identification. A fit to the numbers of decays in the b --> u enriched and depleted samples with M-X above and below 1.6 GeV/c(2) and to the shapes of the lepton energy distribution in the B rest frame gives \textbackslash{}V-ub\textbackslash{}/\textbackslash{}V-cb\textbackslash{ } = 0.103 (+0.011)(-0.012) (stat.) +/- 0.016(syst.) +/- 0.010(model) and, correspondingly, a charmless semileptonic B decay branching fraction of BR(B --> X(u)l (v) over bar)= (1.57 +/- 0.35 (stat.) +/- 0.48(syst.) +/- 0.27(model)) x 10(-3). (C) 2000 Published by Elsevier Science B.V. All rights reserved.}
Published: 2000

220. Update of the search for charginos nearly mass-degenerate with the lightest neutralino

Author: Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Ballestrero, A Bambade, P Barao, F Barbiellini, G and Barbier, R Bardin, DY Barker, G Baroncelli, A Battaglia, M Baubillier, M Becks, KH Begalli, M Behrmann, A and Beilliere, P Belokopytov, Y Benekos, NC Benvenuti, AC and Berat, C Berggren, M Bertrand, D Besancon, M Bigi, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M and Boonekamp, M Booth, PSL Borgland, AW Borisov, G and Bosio, C Botner, O Boudinov, E Bouquet, B Bourdarios, C and Bowcock, TJV Boyko, I Bozovic, I Bozzo, M Bracko, M and Branchini, P Brenner, RA Bruckman, P Brunet, JM and Bugge, L Buran, T Buschbeck, B Buschmann, P Cabrera, S and Caccia, M Calvi, M Camporesi, T Canale, V Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V Charpentier, P Checchia, P Chelkov, GA and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D Crepe, S Crosetti, G Maestro, JC Czellar, S Davenport, M Da Silva, W Della Ricca, G Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A and De Paula, L Dijkstra, H Di Ciaccio, L Dolbeau, J and Doroba, K Dracos, M Drees, J Dris, M Duperrin, A and Durand, JD Eigen, G Ekelof, T Ekspong, G Ellert, M and Elsing, M Engel, JP Santo, ME Fanourakis, G and Fassouliotis, D Fayot, J Feindt, M Ferrer, A and Ferrer-Ribas, E Ferro, F Fichet, S Firestone, A and Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Franek, B and Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Fuster, J and Galloni, A Gamba, D Gamblin, S Gandelman, M Garcia, C and Gaspar, C Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D Geralis, T Gerdyukov, L Ghodbane, N Gil, I Glege, F Gokieli, R Golob, B Gomez-Ceballos, G and Goncalves, P Caballero, IG Gopal, G Gorn, L Gouz, Y and Gracco, V Grahl, J Graziani, E Gris, P Grosdidier, G and Grzelak, K Guy, J Haag, C Hahn, F Hahn, S Haider, S and Hallgren, A Hamacher, K Hansen, J Harris, FJ Hauler, F Hedberg, V Heising, S Hernandez, JJ Herquet, P and Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO and Holt, PJ Hoorelbeke, S Houlden, M Hrubec, J Huber, M and Huet, K Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and Jean-Marie, B Jeans, D Johansson, EK Jonsson, P and Joram, C Juillot, P Jungermann, L Kapusta, F and Karafasoulis, K Katsanevas, S Katsoufis, EC Keranen, P and Kernel, G Kersevan, BP Khokhlov, Y Khomenko, BA and Khovanski, NN Kiiskinen, A King, B Kinvig, A Kjaer, NJ and Klapp, O Klein, H Kluit, P Kokkinias, P and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Krammer, M and Kriznic, E Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A and Leitner, R Lenzen, G Lepeltier, V Lesiak, T and Lethuillier, M Libby, J Liebig, W Liko, D Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM and Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L and MacNaughton, J Mahon, JR Maio, A Malek, A Malmgren, TGM and Maltezos, S Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI and Masik, J Mastroyiannopoulos, N Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Pherson, GM Meroni, C Meyer, WT and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K Monge, MR Moraes, D and Moreau, X Morettini, P Morton, G Mueller, U Muenich, K Mulders, M Mulet-Marquis, C Muresan, R Murray, WJ and Muryn, B Myatt, G Myklebust, T Naraghi, F Nassiakou, M and Navarria, FL Navas, S Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P Nikolenko, M and Nomokonov, V Nygren, A Obraztsov, V Olshevski, AG and Onofre, A Orava, R Orazi, G Osterberg, K Ouraou, A and Paganoni, M Paiano, S Pain, R Paiva, R Palacios, J and Palka, H Papadopoulou, TD Pape, L Parkes, C Parodi, F and Parzefall, U Passeri, A Passon, O Pavel, T Pegoraro, M Peralta, L Pernicka, M Perrotta, A Petridou, C and Petrolini, A Phillips, HT Pierre, F Pimenta, M Piotto, E and Podobnik, T Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL and Rebecchi, P Redaelli, NG Regler, M Rehn, J Reid, D and Reinhardt, R Renton, PB Resvanis, LK Richard, F Ridky, J and Rinaudo, G Ripp-Baudot, I Rohne, O Romero, A and Ronchese, P Rosenberg, EI Rosinsky, P Roudeau, P and Rovelli, T Royon, C Ruhlmann-Kleider, V Ruiz, A and Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J and Sampsonidis, D Sannino, M Schwemling, P Schwering, B and Schwickerath, U Scuri, F Seager, P Sedykh, Y Segar, AM and Seibert, N Sekulin, R Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnov, N and Smirnova, O Smith, GR Sokolov, A Sopczak, A Sosnowski, R and Spassov, T Spiriti, E Squarcia, S Stanescu, C and Stanic, S Stanitzki, M Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Taffard, A Tchikilev, O Tegenfeldt, F and Terranova, F Thomas, J Timmermans, J Tinti, N Tkatchev, LG Tobin, M Todorova, S Tomaradze, A Tome, B and Tonazzo, A Tortora, L Tortosa, P Transtromer, G Treille, D Tristram, G Trochimczuk, M Troncon, C Turluer, ML and Tyapkin, IA Tyapkin, P Tzamarias, S Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P Van den Boeck, W and Van Eldik, J Van Lysebetten, A van Remortal, N Van Vulpen, I and Vegni, G Ventura, L Venus, W Verbeure, F Verdier, P and Verlato, M Vertogradov, LS Verzi, V Vilanova, D and Vitale, L Vlasov, E Vodopyanov, AS Voulgaris, G Vrba, V and Wahlen, H Walck, C Washbrook, AJ Weiser, C Wicke, D and Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G and Yi, J Yushchenko, O Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zintchenko, A and Zoller, P Zucchelli, GC Zumerle, G DELPHI Collaboration
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The data collected by DELPHI in 1998 at the centre-of-mass energy of 189 GeV have been used to update the search for charginos nearly mass-degenerate with the lightest supersymmetric particle, which is assumed to be the lightest neutralino. Mass differences below Delta M = 3 GeV/c(2) are considered. No excess of events with respect to the Standard Model expectation has been observed, and exclusions in the plane of Delta M versus chargino mass are given. The new Delta M independent lower limit on the mass of the chargino is 62.4 GeV/c(2) in the higgsino scenario (which includes the gaugino mass unification scenario), if all sfermions are heavier than the lightest chargino. In the approximation of large sfermion masses the limit is 59.8 GeV/c(2), independently of the field content. (C) 2000 Published by Elsevier Science B.V.
Published: 2000

221. Rapidity-rank structure of $p\overline{p}$ pairs in hadronic $Z^0$ decays

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G D., Alemany, R., Allmendinger, T., Allport, P P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Benekos, N C., Benvenuti, A C., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Blom, H M., Bonesini, M., Boonekamp, M., Booth, P S L., Borgland, A W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R A., Brueckman, P., Brunet, J M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Chabaud, V., Charpentier, P., Checchia, P., Chelkov, G A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H B., Crennell, D., Crepe, S., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J D., Eigen, G., Ekeloef, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito-Santo, M C., Fanourakis, G K., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A G., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez-Caballero, I., Gopal, G., Gorn, L., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F J., Hedberg, V., Heising, S., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G J., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keraenen, R., Kernel, G., Kersevan, B P., Khokhlov, Yu., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kinvig, A., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J W., Lane, D W., Lapin, V., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T G M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W T., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W A., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, M R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V F., Olshevskii, A G., Onofre, A., Orava, R., Orazi, G., Oesterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, A L., Rebecchi, P., Redaelli, N G., Regler, M., Rehn, J., Reid, D., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, A M., Seibert, N., Sekulin, R., Shellard, R C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A N., Smadja, G., Smirnov, N., Smirnova, O., Smith, G R., Sokolov, A., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L G., Tobin, M., Todorova, S., Tomaradze, A G., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M L., Tyapkin, I A., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Dam, P., Van Den Boeck, W., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A J., Weiser, C., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zintchenko, A., Zoller, P., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract: The rapidity-rank structure of \ppb pairs is used to analyze the mechanism of baryon production in hadronic \zz decay. The relative occurrence of the rapidity-ordered configuration \pmpb, where $M$ is a meson, and that of \ppb adjacent pairs is compared. The data are found to be consistent with predictions from a mechanism producing adjacent-rank \ppb pairs, without requiring `string-ordered' \pmpb configurations. An upper limit of 15\% at 90\% confidence is determined for the \pmpb contribution. The rapidity-rank structure of p p ̄ pairs is used to analyze the mechanism of baryon production in hadronic Z 0 decay. The relative occurrence of the rapidity-ordered configuration p M p ̄ , where M is a meson, and that of p p ̄ adjacent pairs is compared. The data are found to be consistent with predictions from a mechanism producing adjacent-rank p p ̄ pairs, without requiring `string-ordered' p M p ̄ configurations. An upper limit of 15% at 90% confidence is determined for the p M p ̄ contribution. The rapidity-rank structure of p pbar pairs is used to analyze the mechanism of baryon production in hadronic Z0 decay. The relative occurrence of the rapidity-ordered configuration p M pbar, where M is a meson, and that of p pbar adjacent pairs is compared. The data are found to be consistent with predictions from a mechanism producing adjacent-rank p pbar pairs, without requiring `string-ordered' p M pbar configurations. An upper limit of 15% at 90% confidence is determined for the p M pbar contribution.
Published: 2000

222. Lambda(b) polarization in Z(0) decays at LEP

Author: Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Bambade, P Barao, F Barbiellini, G Barbier, R Bardin, DY and Barker, G Baroncelli, A Battaglia, M Baubillier, M and Becks, KH Begalli, M Behrmann, A Beilliere, P and Belokopytov, Y Benekos, NC Benvenuti, AC Berat, C and Berggren, M Bertini, D Bertrand, D Besancon, M Bigi, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M Bonivento, W Boonekamp, M Booth, PSL Borgland, AW and Borisov, G Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Boyko, I Bozovic, I Bozzo, M and Bracko, M Branchini, P Brenner, RA Bruckman, P and Brunet, JM Bugge, L Buran, T Buschbeck, B Buschmann, P and Cabrera, S Caccia, M Calvi, M Camporesi, T Canale, V and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Chabaud, V Charpentier, P Chaussard, L and Checchia, P Chelkov, GA Chierici, R Chliapnikov, P and Chochula, P Chorowicz, V Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E Cosme, G Cossutti, F Crawley, HB Crennell, D Crepe, S Crosetti, G Maestro, JC and Czellar, S Davenport, M Da Silva, W Della Ricca, G and Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A De Paula, L Dijkstra, H and Di Ciaccio, L Dolbeau, J Doroba, K Dracos, M Drees, J Dris, M Duperrin, A Durand, JD Eigen, G Ekelof, T and Ekspong, G Ellert, M Elsing, M Engel, JP Santo, ME and Fanourakis, G Fassouliotis, D Fayot, J Feindt, M and Fenyuk, A Ferrari, P Ferrer, A Ferrer-Ribas, E Ferro, F and Fichet, S Firestone, A Flagmeyer, U Foeth, H and Fokitis, E Fontanelli, F Franek, B Frodesen, AG and Fruhwirth, R Fulda-Quenzer, F Fuster, J Galloni, A and Gamba, D Gamblin, S Gandelman, M Garcia, C Gaspar, C and Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D and Ghodbane, N Gil, I Glege, F Gokieli, R Golob, B and Gomez-Ceballos, G Goncalves, P Caballero, IG Gopal, G and Gorn, L Gouz, Y Gracco, V Grahl, J Graziani, E Gris, P Grosdidier, G Grzelak, K Guy, J Hahn, F Hahn, S and Haider, S Hallgren, A Hamacher, K Hansen, J Harris, FJ Hedberg, V Heising, S Hernandez, JJ Herquet, P and Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO and Holt, PJ Hoorelbeke, S Houlden, M Hrubec, J Huber, M and Huet, K Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and Jean-Marie, B Jeans, D Johansson, EK Jonsson, P and Joram, C Juillot, P Jungermann, L Kapusta, F and Karafasoulis, K Katsanevas, S Katsoufis, EC Keranen, R and Kernel, G Kersevan, BP Khomenko, BA Khovanski, NN and Kiiskinen, A King, B Kinvig, A Kjaer, NJ Klapp, O and Klein, H Kluit, P Kokkinias, P Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kriznic, E and Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Lapin, V Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A and Leitner, R Lenzen, G Lepeltier, V Lesiak, T and Lethuillier, M Libby, J Liebig, W Liko, D Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM and Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L and MacNaughton, J Mahon, JR Maio, A Malek, A Malmgren, TGM and Maltezos, S Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI and Masik, J Mastroyiannopoulos, N Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Meroni, C Meyer, WT and Miagkov, A Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K and Monge, MR Moreau, X Morettini, P Morton, G Mueller, U and Muenich, K Mulders, M Mulet-Marquis, C Muresan, R and Murray, WJ Muryn, B Myatt, G Myklebust, T Naraghi, F and Nassiakou, M Navarria, FL Navas, S Nawrocki, K Negri, P and Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P and Nikolenko, M Nomokonov, V Nygren, A Obraztsov, V and Olshevski, AG Onofre, A Orava, R Orazi, G Osterberg, K and Ouraou, A Paganoni, M Paiano, S Pain, R Paiva, R and Palacios, J Palka, H Papadopoulou, TD Papageorgiou, K and Pape, L Parkes, C Parodi, F Parzefall, U Passeri, A and Passon, O Pavel, T Pegoraro, M Peralta, L Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT and Pierre, F Pimenta, M Piotto, E Podobnik, T Pol, ME and Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Rebecchi, P Redaelli, NG and Regler, M Rehn, J Reid, D Reinhardt, R Renton, PB and Resvanis, LK Richard, F Ridky, J Rinaudo, G and Ripp-Baudot, I Rohne, O Romero, A Ronchese, P Rosenberg, EI Rosinsky, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Schwemling, P Schwering, B Schwickerath, U Scuri, F and Seager, P Sedykh, Y Segar, AM Seibert, N Sekulin, R and Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnov, N Smirnova, O Smith, GR and Sopczak, A Sosnowski, R Spassov, T Spiriti, E Squarcia, S Stanescu, C Stanic, S Stanitzki, M Stevenson, K and Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Taffard, A Tchikilev, O and Tegenfeldt, F Terranova, F Thomas, J Timmermans, J and Tinti, N Tkatchev, LG Tobin, M Todorova, S Tomaradze, A and Tome, B Tonazzo, A Tortora, L Tortosa, P and Transtromer, G Treille, D Tristram, G Trochimczuk, M and Troncon, C Turluer, ML Tyapkin, IA Tzamarias, S and Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P and Van den Broeck, W Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G Ventura, L Venus, W and Verbeure, F Verlato, M Vertogradov, LS Verzi, V and Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Voulgaris, G Vrba, V Wahlen, H Walck, C Washbrook, AJ and Weiser, C Wicke, D Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G Yi, J Yushchenko, O Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI and Zintchenko, A Zoller, P Zucchelli, GC Zumerle, G DELPHI Collaboration
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Astrophysics::Cosmology and Extragalactic Astrophysics
Abstract: The longitudinal polarization of the Lambda(b) baryon is measured at the LEP e(+)e(-) collider by DELPHI. It is determined from the charged lepton and neutrino energy spectra in 249 +/- 19 Lambda(b) semileptonic decays reconstructed in approximate to 3.5 million hadronic Z(0) decays using Lambda(0)-lepton correlations. The measured polarization is: P-Lambda b = -0.49(-0.30)(+0.32)(stat.) +/- 0.17(syst.). (C) Elsevier Science B.V. All rights reserved.
Published: 2000

223. Inclusive Sigma(-) and Lambda(1520) production in hadronic Z decays

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G., Alemany, R., Allmendinger, T., Allport, P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W., Arnoud, Y., Asman, B., Augustin, J., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Y., Benekos, N., Benvenuti, A., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenky, M., Bizouard, M., Bloch, D., Blom, H., Bonesini, M., Boonekamp, M., Booth, P., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T., Boyko, I., Bozovic, I., Bozzo, Marco, Bracko, M., Branchini, P., Brenner, R., Bruckman, P., Brunet, J., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Gimenez, M., Cattai, A., Cavallo, F., Chabaud, V., Charpentier, P., Checchia, P., Chelkov, G., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H., Crennell, D., Crepe, S., Crosetti, G., Maestro, J., Czellar, S., Davenport, M., Silva, W. D., Ricca, G. D., Delpierre, P., Demaria, N., Nagelis, A. D., Boer, W. D., Clercq, C. D., Lotto, B. D., Min, A. D., Paula, L. D., Dijkstra, H., Ciaccio, L. D., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J., Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, Flavio, Franek, B., Frodesen, A., Fruhwirth, R., Fulda Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E., Gele, D., Geralis, T., Gerdyukov, L., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez Ceballos, G., Goncalves, P., Caballero, I., Gopal, G., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F., Hauler, F., Hedberg, V., Heising, S., Hernandez, J., Herquet, P., Herr, H., Hessing, T., Heuser, J., Higon, E., Holmgren, S., Holt, P., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G., Hultqvist, K., Jackson, J., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean Marie, B., Jeans, D., Johansson, E., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E., Keranen, R., Kernel, G., Kersevan, B., Khokhlov, Y., Khomenko, B., Khovanski, N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J., Lane, D., Laugier, J., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J., Lopes, J., Lopez, J., Lopez Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J., Maio, A., Malek, A., Malmgren, T., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J., Mariotti, C., Markou, A., Martinez Rivero, C., Garcia, S., Masik, J., Matroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Mcpherson, G., Meroni, C., Meyer, W., Migliore, E., Mirabito, L., Mitaroff, W., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, MARIA ROBERTA, Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet Marquis, C., Muresan, R., Murray, W., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V., Olshevaki, A., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T., Pape, L., Parkes, C., Parodi, Fabrizio, Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, Alessandro, Phillips, H., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P., Read, A., Rebecchi, P., Redaelli, N., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P., Resvanis, L., Richard, F., Ridky, J., Rinaudo, G., Ripp Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E., Rosinksy, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, Mario, Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Seemann, F., Segar, A., Seibert, N., Sekulin, R., Shellard, R., Siebel, M., Simard, L., Simonetto, F., Sisakian, A., Smadja, G., Smirnov, N., Smirnova, O., Smith, G., Sokolov, A., Solovianov, O., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, Sandro, Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L., Tobin, M., Todorova, S., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M., Tyapkin, I., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Dam, P. V., Den, W. V., Eldik, J. V., Lysebetten, A. V., Remortel, N. v., Vulpen, I. V., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A., Weiser, C., Wicke, D., Wickens, J., Wilkinson, G., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N., Zintchenko, A., Zoller, P., Zucchelli, G., Zumerle, G., Beckmann, W., Collaboration, D., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)
Subjects: FOS: Physical sciences, Z(0), K-ASTERISK(0)(892), High Energy Physics - Experiment, PHYSICS, High Energy Physics - Experiment (hep-ex), PRODUCTION-RATES, BARYON PRODUCTION, K-+, PI(+/-), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Particle Physics - Experiment
Abstract: Production of Sigma- and Lambda(1520) in hadronic Z decays has been measured using the DELPHI detector at LEP. The Sigma- is directly reconstructed as a charged track in the DELPHI microvertex detector and is identified by its Sigma -> n pi decay leading to a kink between the Sigma- and pi-track. The reconstruction of the Lambda(1520) resonance relies strongly on the particle identification capabilities of the barrel Ring Imaging Cherenkov detector and on the ionisation loss measurement of the TPC. Inclusive production spectra are measured for both particles. The production rates are measured to be = 0.081 +/- 0.002 +/- 0.010, = 0.029 +/- 0.005 +/- 0.005. The production rate of the Lambda(1520) suggests that a large fraction of the stable baryons descend from orbitally excited baryonic states. It is shown that the baryon production rates in Z decays follow a universal phenomenological law related to isospin, strangeness and mass of the particles., Comment: 23 pages, 9 figures
Published: 2000

224. Search for supersymmetry with R-parity violating LLĒ couplings at √s = 183 GeV

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Ajinenko, I. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Bonivento, W. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Branchini, P. Brenke, T. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Cowell, J.-H. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. da Silva, W. Deghorain, A. Della Ricca, G. Delpierre, P. Demaria, N. de Angelis, A. de Boer, W. de Clercq, C. de Lotto, B. de Min, A. de Paula, L. Dijkstra, H. di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Erzen, B. Espirito Santo, M. Falk, E. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrari, P. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerdyukov, L. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gorski, M. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Green, C. Grimm, H.-J. Gris, P. Grosdidier, G. Grzelak, K. Gunther, M. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kersevan, B.P. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krstic, P. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Langefeld, P. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Miagkov, A. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Nemecek, S. Neufeld, N. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nikolenko, M. Nomokonov, V. Normand, A. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schneider, H. Schwemling, Ph. Schwering, B. Schwickerath, U. Schyns, M.A.E. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Sekulin, R. Shellard, R.C. Sheridan, A. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Solovianov, O. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stanescu, C. Stanic, S. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. van Apeldoorn, G.W. van Dam, P. van Eldik, J. van Lysebetten, A. van Remortel, N. van Vulpen, I. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vollmer, C. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: Searches for pair production of supersymmctric particles in e+e- collision at centre-of-mass energy of 183 GeV have been performed on DELPHI data under the assumption that R-parity is not conserved. Only one R-parity violating coupling of λ type, which couples the sleptous to the leptons (LLĒ erm), is considered to be dominant at a time. Since in models with R-parity violation any supersymmetic particlr can be the lightest one, searches for charginos, neutralinos, sleptons and squarks have been perfomed both for direct R-parity violating decays and for indirect cascade decays. Morever, it is assumed that the strength of the R-parity violating couplings is such that the lifetimes can be neglected. The present study of supersymmetric particle pair production is used to exclude domains of the Minimal Supersymmetric Standard Model parameter space previously explored under the assumption of R-parity conservation.
Published: 2000

225. Searches for neutral Higgs bosons in e+e- collisions around √s = 189 GeV

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Belous, K. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Bracko, M. Branchini, P. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. CastilloGimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Chapkin, M. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. CuevasMaestro, J. Czellar, S. Dalmau, J. Davenport, M. DaSilva, W. DellaRicca, G. Delpierre, P. Demaria, N. DeAngelis, A. DeBoer, W. DeClercq, C. DeLotto, B. DeMin, A. DePaula, L. Dijkstra, H. DiCiaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. EspiritoSanto, M. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. GonzalezCaballero, I. Gopal, G. Gorn, L. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Gris, P. Grosdidier, G. Grzelak, K. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huber, M. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Jeans, D. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Jungermann, L. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kernel, G. Kersevan, B.P. Khokhlov, Yu. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liebig, W. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. MartiiGarcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. McCubbin, M. McKay, R. McNulty, R. McPherson, G. Meroni, C. Meyer, W.T. Miagkov, A. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neufeld, N. Nicolaidou, R. Nielsen, B.S. Niezurawski, P. Nikolenko, M. Nomokonov, V. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pavel, T. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Rehn, J. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Ripp-Baudot, I. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schwemling, Ph. Schwering, B. Schwickerath, U. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Seibert, N. Sekulin, R. Shellard, R.C. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnova, O. Smith, G.R. Solovianov, O. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Squarcia, S. Stanescu, C. Stanic, S. Stanitzki, M. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Taffard, A. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Tobin, M. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Tortosa, P. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. VanderVelde, C. VanDam, P. VandenBoeck, W. VanDoninck, W.K. VanEldik, J. VanLysebetten, A. vanRemortel, N. VanVulpen, I. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Washbrook, A.J. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zintchenko, A. Zoller, Ph. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: Searches for neutral Higgs bosons in the Standard Model and the MSSM have been performed using data collected by the DELPHI experiment at a centre-of-mass energy of 188.7 GeV, corresponding to an integrated luminosity of 158 pb-1. These analyses are used, in combination with our results from lower energies, to set new 95% confidence level lower mass bounds on the Standard Model Higgs boson (94.6 GeV/c2) and on the lightest neutral scalar (82.6 GeV/c2) and neutral pseudoscalar (84.1 GeV/c2) Higgs bosons in a representative scan of the MSSM parameters. The results are also interpreted in the framework of a general two-Higgs doublet model.
Published: 2000

226. Upper limit for the decay B- -> tau(-)(v)over-bar(tau) the b -> tau(v)over-bar(tau)X branching ratio

Author: Abreu, P, Adam, W, Adye, T, Adzic, P, Ajinenko, I, Albrecht, Z, Alderweireld, T, Alekseev, GD, Alemany, R, Allmendinger, T, Allport, PP, Almehed, S, Amaldi, U, Amapane, N, Amato, S, Anassontzis, EG, Andersson, P, Andreazza, A, Andringa, S, Antilogus, P, Apel, WD, Arnoud, Y, Asman, B, Augustin, JE, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Barbier, R, Bardin, DY, Barker, G, Baroncelli, A, Battaglia, M, Baubillier, M, Becks, KH, Begalli, M, Behrmann, A, Beilliere, P, Belokopytov, Y, Benekos, NC, Benvenuti, AC, Berat, C, Berggren, M, Bertrand, D, Besancon, M, Bigi, M, Bilenky, MS, Bizouard, MA, Bloch, D, Blom, HM, Bonesini, M, Boonekamp, M, Booth, PSL, Borgland, AW, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, TJV, Boyko, I, Bozovic, I, Bozzo, M, Bracko, M, Branchini, P, Brenner, RA, Bruckman, P, Brunet, JM, Bugge, L, Buran, T, Buschbeck, B, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Camporesi, T, Canale, V, Carena, F, Carroll, L, Caso, C, Gimenez, MVC, Cattai, A, Cavallo, FR, Chabaud, V, Charpentier, P, Checchia, P, Chelkov, GA, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cieslik, K, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, HB, Crennell, D, Crepe, S, Crosetti, G, Maestro, JC, Czellar, S, Davenport, M, Da Silva, W, Della Ricca, G, Delpierre, P, Demaria, N, De Angelis, A, De Boer, W, De Clercq, C, De Lotto, B, De Min, A, De Paula, L, Dijkstra, H, Di Ciaccio, L, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Dris, M, Duperrin, A, Durand, JD, Eigen, G, Ekelof, T, Ekspong, G, Ellert, M, Elsing, M, Engel, JP, Santo, ME, Fanourakis, G, Fassouliotis, D, Fayot, J, Feindt, M, Ferrer, A, Ferrer-Ribas, E, Ferro, F, Fichet, S, Firestone, A, Flagmeyer, U, Foeth, H, Fokitis, E, Fontanelli, F, Franek, B, Frodesen, AG, Fruhwirth, R, Fulda-Quenzer, F, Fuster, J, Galloni, A, Gamba, D, Gamblin, S, Gandelman, M, Garcia, C, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, EN, Gele, D, Geralis, T, Gerdyukov, L, Ghodbane, N, Gil, I, Glege, F, Gokieli, R, Golob, B, Gomez-Ceballos, G, Goncalves, P, Caballero, IG, Gopal, G, Gorn, L, Gouz, Y, Gracco, V, Grahl, J, Graziani, E, Gris, P, Grosdidier, G, Grzelak, K, Guy, J, Haag, C, Hahn, F, Hahn, S, Haider, S, Hallgren, A, Hamacher, K, Hansen, J, Harris, FJ, Hedberg, V, Heising, S, Hernandez, JJ, Herquet, P, Herr, H, Hessing, TL, Heuser, JM, Higon, E, Holmgren, SO, Holt, PJ, Hoorelbeke, S, Houlden, M, Hrubec, J, Huber, M, Huet, K, Hughes, GJ, Hultqvist, K, Jackson, JN, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Jeans, D, Johansson, EK, Jonsson, P, Joram, C, Juillot, P, Jungermann, L, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, EC, Keranen, R, Kernel, G, Kersevan, BP, Khomenko, BA, Khovanski, NN, Kiiskinen, A, King, B, Kinvig, A, Kjaer, NJ, Klapp, O, Klein, H, Kluit, P, Kokkinias, P, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kriznic, E, Krstic, J, Krumstein, Z, Kubinec, P, Kurowska, J, Kurvinen, K, Lamsa, JW, Lane, DW, Lapin, V, Laugier, JP, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Leinonen, L, Leisos, A, Leitner, R, Lenzen, G, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liebig, W, Liko, D, Lipniacka, A, Lippi, I, Loerstad, B, Loken, JG, Lopes, JH, Lopez, JM, Lopez-Fernandez, R, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J, Mahon, JR, Maio, A, Malek, A, Malmgren, TGM, Maltezos, S, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, JC, Mariotti, C, Markou, A, Martinez-Rivero, C, Martinez-Vidal, F, Garcia, SMI, Masik, J, Mastroyiannopoulos, N, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, F, Mazzucato, M, Mc Cubbin, M, Mc Kay, R, Mc Nulty, R, Mc Pherson, G, Meroni, C, Meyer, WT, Miagkov, A, Migliore, E, Mirabito, L, Mitaroff, WA, Mjoernmark, U, Moa, T, Moch, M, Moeller, R, Moenig, K, Monge, MR, Moraes, D, Moreau, X, Morettini, P, Morton, G, Mueller, U, Muenich, K, Mulders, M, Mulet-Marquis, C, Muresan, R, Murray, WJ, Muryn, B, Myatt, G, Myklebust, T, Naraghi, F, Nassiakou, M, Navarria, FL, Navas, S, Nawrocki, K, Negri, P, Neufeld, N, Nicolaidou, R, Nielsen, BS, Niezurawski, P, Nikolenko, M, Nomokonov, V, Nygren, A, Obraztsov, V, Olshevski, AG, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palacios, J, Palka, H, Papadopoulou, TD, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Passon, O, Pavel, T, Pegoraro, M, Peralta, L, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, HT, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Pol, ME, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, PN, Read, AL, Rebecchi, P, Redaelli, NG, Rehn, J, Reid, D, Reinhardt, R, Renton, PB, Resvanis, LK, Richard, F, Ridky, J, Rinaudo, G, Ripp-Baudot, I, Rohne, O, Romero, A, Ronchese, P, Rosenberg, EI, Rosinsky, P, Roudeau, P, Rovelli, T, Royon, C, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schwemling, P, Schwering, B, Schwickerath, U, Scuri, F, Seager, P, Sedykh, Y, Segar, AM, Seibert, N, Sekulin, R, Shellard, RC, Siebel, M, Simard, L, Simonetto, F, Sisakian, AN, Smadja, G, Smirnov, N, Smirnova, O, Smith, GR, Sokolov, A, Sopczak, A, Sosnowski, R, Spassov, T, Spiriti, E, Squarcia, S, Stanescu, C, Stanic, S, Stanitzki, M, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Taffard, A, Tegenfeldt, F, Terranova, F, Thomas, J, Timmermans, J, Tinti, N, Tkatchev, LG, Tobin, M, Todorova, S, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Tortosa, P, Transtromer, G, Treille, D, Tristram, G, Trochimczuk, M, Troncon, C, Turluer, ML, Tyapkin, IA, Tyapkin, P, Tzamarias, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Van Dam, P, Van den Boeck, W, Van Doninck, WK, Van Eldik, J, Van Lysebetten, A, van Remortel, N, Van Vulpen, I, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verdier, P, Verlato, M, Vertogradov, LS, Verzi, V, Vilanova, D, Vitale, L, Vlasov, E, Vodopyanov, AS, Voulgaris, G, Vrba, V, Wahlen, H, Walck, C, Washbrook, AJ, Weiser, C, Wicke, D, Wickens, JH, Wilkinson, GR, Winter, M, Witek, M, Wolf, G, Yi, J, Yushchenko, O, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, NI, Zintchenko, A, Zoller, P, Zucchelli, GC, Zumerle, G, and Collaboration, DELPHI
Subjects: S-GAMMA%22">B->S-GAMMA, MESONS
Published: 2000

227. Inclusive Sigma(-) and Lambda(1520) production in hadronic Z decays

Author: Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Ballestrero, A Bambade, P Barao, F Barbiellini, G and Barbier, R Bardin, DY Barker, G Baroncelli, A Battaglia, M Baubillier, M Becks, KH Begalli, M Behrmann, A and Beilliere, P Belokopytov, Y Benekos, NC Benvenuti, AC and Berat, C Berggren, M Bertrand, D Besancon, M Bigi, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M and Boonekamp, M Booth, PSL Borisov, G Bosio, C Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Boyko, I Bozovic, I Bozzo, M Bracko, M Branchini, P and Brenner, RA Bruckman, P Brunet, JM Bugge, L Buran, T and Buschbeck, B Buschmann, P Cabrera, S Caccia, M Calvi, M and Camporesi, T Canale, V Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Checchia, P Chelkov, GA Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cieslik, K Collins, P Contri, R Cortina, E Cosme, G and Cossutti, F Costa, M Crawley, HB Crennell, D Crepe, S and Crosetti, G Maestro, JC Czellar, S Davenport, M Da Silva, W Della Ricca, G Delpierre, P Demaria, N De Nagelis, A De Boer, W De Clercq, C De Lotto, B De Min, A and De Paula, L Dijkstra, H Di Ciaccio, L Dolbeau, J and Doroba, K Dracos, M Drees, J Dris, M Duperrin, A and Durand, JD Eigen, G Ekelof, T Ekspong, G Ellert, M and Elsing, M Engel, JP Santo, ME Fanourakis, G and Fassouliotis, D Fayot, J Feindt, M Ferrer, A and Ferrer-Ribas, E Ferro, F Fichet, S Firestone, A and Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Franek, B and Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Fuster, J and Galloni, A Gamba, D Gamblin, S Gandelman, M Garcia, C and Gaspar, C Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D Geralis, T Gerdyukov, L Ghodbane, N Gil, I Glege, F Gokieli, R Golob, B Gomez-Ceballos, G and Goncalves, P Caballero, IG Gopal, G Gorn, L Gouz, Y and Gracco, V Grahl, J Graziani, E Gris, P Grosdidier, G and Grzelak, K Guy, J Haag, C Hahn, F Hahn, S Haider, S and Hallgren, A Hamacher, K Hansen, J Harris, FJ Hauler, F Hedberg, V Heising, S Hernandez, JJ Herquet, P and Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO and Holt, PJ Hoorelbeke, S Houlden, M Hrubec, J Huber, M and Huet, K Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and Jean-Marie, B Jeans, D Johansson, EK Jonsson, P and Joram, C Juillot, P Jungermann, L Kapusta, F and Karafasoulis, K Katsanevas, S Katsoufis, EC Keranen, R and Kernel, G Kersevan, BP Khokhlov, Y Khomenko, BA and Khovanski, NN Kiiskinen, A King, B Kinvig, A Kjaer, NJ and Klapp, O Klein, H Kluit, P Kokkinias, P and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Krammer, M and Kriznic, E Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A and Leitner, R Lenzen, G Lepeltier, V Lesiak, T and Lethuillier, M Libby, J Liebig, W Liko, D Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM and Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L and MacNaughton, J Mahon, JR Maio, A Malek, A Lutz, P and Lyons, L MacNaughton, J Mahon, JR Maio, A Malek, A and Malmgren, TGM Maltezos, S Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Garcia, SMI Masik, J and Matroyiannopoulos, N Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, F Mazzucato, M McCubbin, M McKay, R and McNulty, R McPherson, G Meroni, C Meyer, WT Migliore, E and Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K Monge, MR Moraes, D Moreau, X and Morettini, P Morton, G Mueller, U Muenich, K and Mulders, M Mulet-Marquis, C Muresan, R Murray, WJ Muryn, B Myatt, G Myklebust, T Naraghi, F Nassiakou, M and Navarria, FL Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P Nikolenko, M Nomokonov, V and Nygren, A Obraztsov, V Olshevaki, AG Onofre, A and Orava, R Orazi, G Osterberg, K Ouraou, A Oyanguren, A and Paganoni, M Paiano, S Pain, R Paiva, R Palacios, J and Palka, H Papadopoulou, TD Pape, L Parkes, C Parodi, F Parzefall, U Passeri, A Passon, O Pavel, T and Pegoraro, M Peralta, L Pernicka, M Perrotta, A Petridou, C Petrolini, A Phillips, HT Pierre, F Pimenta, M and Piotto, E Podobnik, T Pol, ME Polok, G Poropat, P and Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A and Radojicic, D Ragazzi, S Rahmani, H Rames, J Ratoff, PN and Read, AL Rebecchi, P Redaelli, NG Regler, M Rehn, J and Reid, D Reinertsen, P Reinhardt, R Renton, PB and Resvanis, LK Richard, F Ridky, J Rinaudo, G Ripp-Baudot, I Rohne, O Romero, A Ronchese, P Rosenberg, EI and Rosinksy, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Schwemling, P Schwering, B Schwickerath, U Scuri, F and Seager, P Sedykh, Y Seemann, F Segar, AM Seibert, N and Sekulin, R Shellard, RC Siebel, M Simard, L Simonetto, F and Sisakian, AN Smadja, G Smirnov, N Smirnova, O Smith, GR Sokolov, A Solovianov, O Sopczak, A Sosnowski, R and Spassov, T Spiriti, E Squarcia, S Stanescu, C Stanic, S and Stanitzki, M Stevenson, K Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Taffard, A Tegenfeldt, F Terranova, F Thomas, J and Timmermans, J Tinti, N Tkatchev, LG Tobin, M Todorova, S and Tomaradze, A Tome, B Tonazzo, A Tortora, L Tortosa, P Transtromer, G Treille, D Tristram, G Trochimczuk, M and Troncon, C Turluer, ML Tyapkin, IA Tyapkin, P and Tzamarias, S Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P Van den Boeck, W Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G and Ventura, L Venus, W Verbeure, F Verdier, P Verlato, M and Vertogradov, LS Verzi, V Vilanova, D Vitale, L and Vlasov, E Vodopyanov, AS Voulgaris, G Vrba, V Wahlen, H and Walck, C Washbrook, AJ Weiser, C Wicke, D Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G Yi, J and Yushchenko, O Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zintchenko, A Zoller, P and Zucchelli, GC Zumerle, G Beckmann, WOG DELPHI Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Production of Sigma(-) and Lambda(1520) in hadronic Z decays has been measured using the DELPHI detector at LEP. The Sigma(-) is directly reconstructed as a charged track in the DELPHI microvertex detector and is identified by its Sigma –> n pi decay leading to a kink between the Sigma(-) and pi-track. The reconstruction of the Lambda(1520) resonance relies strongly on the particle identification capabilities of the barrel Ring Imaging Cherenkov detector and on the ionisation loss measurement of the TPC. Inclusive production spectra are measured for both particles. The production rates are measured to be [NSigma-/N-Z(had)] = 0.081 +/- 0.002 +/- 0.010, [N-Lambda(1520)/N-Z(had)] = 0.029 +/- 0.005 +/- 0.005. The production rate of the Lambda(1520) suggests that a large fraction of the stable baryons descend from orbitally excited baryonic states. It is shown that the baryon production rates in Z decays follow a universal phenomenological law related to isospin, strangeness and mass of the particles. (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

228. Measurement of the B0s lifetime and study of B0s-B0s oscillations using Dsℓ events

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Belous, K. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Bracko, M. Branchini, P. Brenke, T. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. CastilloGimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Chapkin, M. Charpentier, P. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. CuevasMaestro, J. Czellar, S. Davenport, M. DaSilva, W. Deghorain, A. DellaRicca, G. Delpierre, P. Demaria, N. DeAngelis, A. DeBoer, W. DeClercq, C. DeLotto, B. DeMin, A. DePaula, L. Dijkstra, H. DiCiaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. EspiritoSanto, M. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Fenyuk, A. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, P. Gazis, E.N. Gele, D. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. GonzalezCaballero, I. Gopal, G. Gorn, L. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Grimm, H.-J. Gris, P. Grosdidier, G. Grzelak, K. Gunther, M. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, C. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kernel, G. Kersevan, B.P. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krstic, J. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Langefeld, P. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. MartiiGarcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. McCubbin, M. McKay, R. McNulty, R. McPherson, G. Meroni, C. Meyer, W.T. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Nemecek, S. Neufeld, N. Nicolaidou, R. Nielsen, B.S. Niezurawski, P. Nikolenko, M. Nomokonov, V. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pavel, T. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, C. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schneider, H. Schwemling, P. Schwering, B. Schwickerath, U. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Sekulin, R. Shellard, R.C. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnova, O. Smith, G.R. Solovianov, O. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stanescu, C. Stanic, S. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Taffard, A. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Tobin, M. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. VanApeldoorn, G.W. VanDam, P. VanDoninck, W.K. VanEldik, J. VanLysebetten, A. VanRemortel, N. VanVulpen, I. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vollmer, C. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Washbrook, A.J. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zintchenko, A. Zucchelli, G.C. Zumerle, G.
Abstract: Lifetime and oscillations of B0s mesons have been studied in events with a large transverse momentum lepton and a Ds of opposite electric charge in the same hemisphere, selected from about, 3.6 million hadronic Z0 decays accumulated by DELPHI between 1992 and 1995. The B0s lifetime and the fractional width difference between the two physical B0s states have been found to be: τB0s = (1.42+0.14-0.13(stat.) ± 0.03(syst.)) ps ΔΓB0s/ΓB0s < 0.46 at the 95% C.L. In the latter result it has been assumed that τB0s = τB0d. Using the same sample, a limit on the mass difference between the physical B0s states has been set: ΔmB0s > 7.4 ps-1 at the 95% C.L. with a corresponding sensitivity equal to 8.1 ps-1.
Published: 2000

229. Search for SUSY with R-parity violating LL(E)over-bar couplings at root s=189 GeV

Author: Abreu, P Adam, W Adye, T Adzic, P Albrecht, Z and Alderweireld, T Alekseev, GD Alemany, R Allmendinger, T and Allport, PP Almehed, S Amaldi, U Amapane, N Amato, S and Anassontzis, EG Andersson, P Andreazza, A Andringa, S and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Ballestrero, A Bambade, P and Barao, F Barbiellini, G Barbier, R Bardin, DY Barker, G and Baroncelli, A Battaglia, M Baubillier, M Becks, KH and Begalli, M Behrmann, A Beilliere, P Belokopytov, Y and Belous, K Benekos, NC Benvenuti, AC Berat, C Berggren, M and Berntzon, L Bertrand, D Besancon, M Bilenky, MS and Bizouard, MA Bloch, D Blom, HM Bonesini, M Boonekamp, M and Booth, PSL Borisov, G Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Boyko, I and Bozovic, I Bozzo, M Bracko, M Branchini, P Brenner, RA and Bruckman, P Brunet, JM Bugge, L Buran, T Buschbeck, B Buschmann, P Cabrera, S Caccia, M Calvi, M and Camporesi, T Canale, V Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chapkin, M and Charpentier, P Checchia, P Chelkov, GA Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cieslik, K Collins, P Cortina, E Cosme, G Cossutti, F and Costa, M Crawley, HB Crennell, D Crosetti, G and Maestro, JC Czellar, S D'Hondt, J Dalmau, J Davenport, M and Da Silva, W Della Ricca, G Delpierre, P Demaria, N and De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A De Paula, L Dijkstra, H Di Ciaccio, L Dolbeau, J and Doroba, K Dracos, M Drees, J Dris, M Eigen, G and Ekelof, T Ellert, M Elsing, M Engel, JP Santo, ME and Fanourakis, G Fassouliotis, D Feindt, M Fernandez, J and Ferrer, A Ferrer-Ribas, E Ferro, F Firestone, A and Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Franek, B and Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Fuster, J and Galloni, A Gamba, D Gamblin, S Gandelman, M Garcia, C and Gaspar, C Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D Geralis, T Ghodbane, N Gil, I Glege, F and Gokieli, R Golob, B Gomez-Ceballos, G Goncalves, P and Caballero, IG Gopal, C Gorn, L Gouz, Y Gracco, V and Grahl, J Graziani, E Gris, P Grosdidier, G Grzelak, K and Guy, J Haag, C Hahn, F Hahn, S Haider, S and Hallgren, A Hamacher, K Hansen, J Harris, FJ Hauler, F and Hedberg, V Heising, S Hernandez, JJ Herquet, P Herr, H Higon, E Holmgren, SO Holt, PJ Hoorelbeke, S and Houlden, M Hrubec, J Huber, M Hughes, GJ Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P Jean-Marie, B Jeans, D and Johansson, EK Jonsson, P Joram, C Juillot, P and Jungermann, L Kapusta, F Karafasoulis, K Katsanevas, S and Katsoufis, EC Keranen, R Kernel, G Kersevan, BP and Khokhlov, Y Khomenko, BA Khovanski, NN Kiiskinen, A and King, B Kinvig, A Kjaer, NJ Klapp, O Kluit, P and Kokkinias, P Kostioukhine, V Kourkoumelis, C Kouznetsov, O and Krammer, M Kriznic, E Krumstein, Z Kubinec, P and Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Lapin, V and Laugier, JP Lauhakangas, R Leder, G Ledroit, F Leinonen, L Leisos, A Leitner, R Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Lethuillier, M Libby, J Liebig, W and Liko, D Lipniacka, A Lippi, I Loerstad, B Loken, JG and Lopes, JH Lopez, JM Lopez-Fernandez, R Loukas, D and Lutz, P Lyons, L MacNaughton, J Mahon, JR Maio, A and Malek, A Maltezos, S Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C and Markou, A Martinez-Rivero, C Garcia, SMI Masik, J and Mastroyiannopoulos, N Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Merle, E Meroni, C Meyer, WT and Miagkov, A Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K and Monge, MR Moraes, D Morettini, P Morton, G Mueller, U and Muenich, K Mulders, M Mulet-Marquis, C Mundim, LM and Muresan, R Murray, WJ Muryn, B Myatt, G Myklebust, T and Naraghi, F Nassiakou, M Navarria, FL Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P and Nikolenko, M Nomokonov, V Nygren, A Obraztsov, V and Olshevski, AG Onofre, A Orava, R Orazi, G Osterberg, K and Ouraou, A Oyanguren, A Paganoni, M Paiano, S Pain, R and Paiva, R Palacios, J Palka, H Papadopoulou, TD Pape, L Parkes, C Parodi, F Parzefall, U Passeri, A and Passon, O Pavel, T Pegoraro, M Peralta, L Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT and Pierre, F Pimenta, M Piotto, E Podobnik, T Poireau, V and Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S and Rahmani, H Rames, J Ratoff, PN Read, AL Rebecchi, P and Redaelli, NG Regler, M Rehn, J Reid, D Reinertsen, P and Reinhardt, R Renton, PB Resvanis, LK Richard, F Ridky, J and Rinaudo, G Ripp-Baudot, I Romero, A Ronchese, P and Rosenberg, EI Rosinsky, P Roudeau, P Rovelli, T and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Savoy-Navarro, A Schwemling, P Schwering, B and Schwickerath, U Scuri, F Seager, P Sedykh, Y Segar, AM and Seibert, N Sekulin, R Sette, C Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G and Smirnova, O Smith, GR Solovianov, O Sopczak, A and Sosnowski, R Spassov, T Spiriti, E Squarcia, S Stanescu, C Stanitzki, M Stevenson, K Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Taffard, A Tegenfeldt, F Terranova, F Timmermans, J and Tinti, N Tkatchev, LG Tobin, M Todorova, S Tome, B and Tonazzo, A Tortora, L Tortosa, P Transtromer, G and Treille, D Tristram, G Trochimczuk, M Troncon, C and Turluer, ML Tyapkin, IA Tyapkin, P Tzamarias, S and Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P and Van den Boeck, W Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G Ventura, L Venus, W and Verbeure, F Verdier, P Verlato, M Vertogradov, LS and Verzi, V Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Voulgaris, G Vrba, V Wahlen, H Washbrook, AJ Weiser, C Wicke, D Wickens, JH Wilkinson, GR Winter, M and Witek, M Wolf, G Yi, J Yushchenko, O Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zintchenko, A and Zoller, P Zumerle, G Zupan, M DELPHI Collaboration
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: Searches for pair production of supersymmetric particles under the assumption that R-parity is not conserved are presented, based on data recorded by the DELPHI detector in 1998 from e(+)e(-) collisions at a centre-of-mass energy of 189 GeV. Only one R-parity violating LL (E) over bar term (i.e. one lambda coupling), which couples scalar leptons to leptons, is considered to be dominant at a time. Moreover, it is assumed that the strength of the R-parity violating couplings is such that the lifetimes can be neglected. The search for pair production of neutralinos, charginos and sleptons has been performed for both direct R-parity violating decays and indirect cascade decays. The results are in agreement with Standard Model expectations, and are used to update the constraints on the MSSM parameter values and the mass limits previously derived at root s = 183 GeV. The present 95% C.L. Limits on supersymmetric particle masses are: m(0) > 30 GeV/c(2) and m(+/-) > 94 GeV/c(2); m() > 76.5 GeV/c(2) (direct and indirect decays); m((l) over tilde R) > 83 GeV/c(2) (indirect decay only). (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

230. Search for supersymmetric particles in scenarios with a gravitino LSP and stau NLSP

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Asman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Ballestrero, A. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Belous, K. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertrand, D. Besancon, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Boonekamp, M. Booth, P.S.L. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Bracko, M. Branchini, P. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Chapkin, M. Charpentier, P. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Costa, M. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. Da Silva, W. Della Ricca, G. Delpierre, P. Demaria, N. de Angelis, A. de Boer, W. de Clercq, C. de Lotto, B. de Min, A. de Paula, L. Dijkstra, H. di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Espirito Santo, M. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, P. Gazis, E.N. Gele, D. Geralis, T. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Gris, P. Grosdidier, G. Grzelak, K. Guy, J. Haag, C. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hauler, F. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huber, M. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, C. Jarlskog, G. Jarry, P. Jean-Marie, B. Jeans, D. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Jungermann, L. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kernel, G. Kersevan, B.P. Khokhlov, Y. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liebig, W. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Miagkov, A. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moraes, D. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Nawrocki, K. Negri, P. Neufeld, N. Nicolaidou, R. Nielsen, B.S. Niezurawski, P. Nikolenko, M. Nomokonov, V. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Oyanguren, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pavel, T. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Rehn, J. Reid, D. Reinertsen, P. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Ripp-Baudot, I. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, C. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schwemling, P. Schwering, B. Schwickerath, U. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Seibert, N. Sekulin, R. Shellard, R.C. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnova, O. Smith, G.R. Solovianov, O. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Squarcia, S. Stanescu, C. Stanic, S. Stanitzki, M. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Taffard, A. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Tobin, M. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Tortosa, P. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Turluer, M.-L. Tyapkin, I.A. Tyapkin, P. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. van Dam, P. van den Boeck, W. van Eldik, J. van Lysebetten, A. van Remortel, N. van Vulpen, I. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verdier, P. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Washbrook, A.J. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zintchenko, A. Zoller, P. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: Sleptons, neutralinos and charginos were searched for in the context of scenarios where the lightest supersymmetric particle is the gravitino. It was assumed that the stau is the next-to-ligntest supersymmetric particle. Data collected with the DELPHI detector at a centre-of-mass energy near 189 GeV were analysed combining the methods developed in previous searches at lower energies. No evidence for the production of these supersymmetric particles was found. Hence, limits were derived at 95% confidence level.
Published: 2000

231. Search for the sgoldstino at root s from 189 to 202 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G. D., Alemany, R., Allmendinger, T., Allport, P. P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anashkin, E., Anassontzis, E. G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D. Y., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K. H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Y., Benekos, N. C., Benvenuti, A. C., Berat, C., Berggren, M., Berntzon, L., Bertrand, D., Besancon, M., Bilenky, M. S., Bizouard, M. A., Bloch, D., Blom, H. M., Bonesini, M., Boonekamp, M., P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Charpentier, P., Checchia, P., Chelkov, G. A., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H. B., Crennell, D., Croix, J., Crosetti, G., Maestro, J. C., Czellar, S., D'Hondt, J., Dalmau, J., Davenport, M., Silva, W. D., Ricca, G. D., Delpierre, P., Demaria, N., Angelis, A. D., Boer, W. D., Clercq, C. D., Lotto, B. D., Min, A. D., Paula, L. D., Dijkstra, H., Ciaccio, L. D., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Eigen, G., Ekelof, T., Ellert, M., Elsing, M., Engel, J. P., Santo, M. E., Fanourakis, G., Fassouliotis, D., Feindt, M., Fernandez, J., Ferrer, A., Ferrer Ribas, E., Ferro, F., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A. G., Fruhwirth, R., Fulda Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez Ceballos, G., Goncalves, P., Caballero, I. G., Gopal, G., Gorn, L., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Halag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F. J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J. J., Herquet, P., Herr, H., Higon, E., Holmgren, S. O., Holt, P. J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Hughes, G. J., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean Marie, B., Jeans, D., Johansson, E. K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E. C., Keranen, R., Kernel, G., Kersevan, B. P., Khomenko, B. A., Khovanski, N. N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N. J., Klapp, O., Kluit, P., Kokkinias, P., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J. W., Lane, D. W., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopes, J. H., Lopez, J. M., Lopez Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J. R., Maio, A., Malek, A., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Martinez Rivero, C., S. M. I., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Cubbin, M. M., Kay, R. M., Nulty, R. M., Mcpherson, G., Merle, E., Meroni, C., Meyer, W. T., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, M. R., Montenegro, J., Moraes, D., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet Marquis, C., Mundim, L. M., Muresan, R., Murray, W. J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F. L., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B. S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Poireau, V., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahman, H., Rames, J., Ratoff, P. N., Read, A. L., Rebecchi, P., Redaelli, N. G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P. B., Resvanis, L. K., Richard, F., Ridky, J., Rinaudo, G., Ripp Baudot, I., Romero, A., Ronchese, Paolo, Rosenberg, E. I., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Savoy Navarro, A., Schwanda, C., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seibert, N., Sekulin, R., Sette, G., Shellard, R. C., Siebel, M., Simard, L., Simonetto, Franco, Sisakian, A. N., Smadja, G., Smirnova, O., Smith, G. R., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, S., Stanescu, C., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tegenfeldt, F., Terranova, F., Timmermans, J., Tinti, N., Tkatchev, L. G., Tobin, M., Todorova, S., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M. L., Tyapkin, I. A., Tyapkin, P., Tzamarias, S., Ullaland, O., Valenti, G., Vallazza, E., Velde, C. V., Dam, P. V., Den, W. V., Van, W. K., Eldik, J. V., Lysebetten, A. V., Remortel, N. v., Vulpen, I. V., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L. S., Verzi, V., Vilanova, D., Vitale, L., Vodopyanov, A. S., Voulgaris, G., Vrba, V., Wahlen, H., Washbrook, A. J., Weiser, C., Wicke, D., Wickens, J. H., Wilkinson, G. R., Winter, M., Witek, M., Wolf, G., Yi, J., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zintchenko, A., Zoller, P., Zumerle, Gianni, and Zupan, M.
Subjects: EVENTS, MONTE-CARLO, GRAVITINO, High Energy Physics::Phenomenology, High Energy Physics::Experiment, ANNIHILATION, SUPERSYMMETRY, CROSS-SECTIONS, DECAYS, QC
Abstract: A search for the supersymmetric partner of the goldstino, the sgoldstino S, at LEP2 is presented. The production Sγ followed by S decay into two gluons or into two photons was studied at 189-202 GeV LEP centre-of-mass energies. No evidence for the S production was found and limits on the S mass corresponding to different theory parameters are given. (C) 2000 Elsevier Science B.V.
Published: 2000

232. Hadronization properties of b quarks compared to light quarks in e(+)e(-)-> q(q)over-bar from 183 to 200 GeV

Author: Abreu, P Adam, W Adye, T Adzic, P Albrecht, Z and Alderweireld, T Alekseev, GD Alemany, R Allmendinger, T and Allport, PP Almehed, S Amaldi, U Amapane, N Amato, S and Anassontzis, EG Andersson, P Andreazza, A Andringa, S and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Ballestrero, A Bambade, P and Barao, F Barbiellini, G Barbier, R Bardin, DY Barker, G and Baroncelli, A Battaglia, M Baubillier, M Becks, KH and Begalli, M Behrmann, A Beilliere, P Belokopytov, Y and Belous, K Benekos, NC Benvenuti, AC Berat, C Berggren, M and Bertrand, D Besancon, M Bigi, M Bilenky, MS and Bizouard, MA Bloch, D Blom, HM Bonesini, M Boonekamp, M and Booth, PSL Borisov, G Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Boyko, I and Bozovic, I Bozzo, M Bracko, M Branchini, P Brenner, RA and Bruckman, P Brunet, JM Bugge, L Buran, T Buschbeck, B Buschmann, P Cabrera, S Caccia, M Calvi, M and Camporesi, T Canale, V Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V Chapkin, M and Charpentier, P Checchia, P Chelkov, GA Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cieslik, K Collins, P Contri, R Cortina, E Cosme, G and Cossutti, F Costa, M Crawley, HB Crennell, D Crepe, S and Crosetti, G Maestro, JC Czellar, S Davenport, M Da Silva, W Della Ricca, G Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A and De Paula, L Dijkstra, H Di Ciaccio, L Dolbeau, J and Doroba, K Dracos, M Drees, J Dris, M Duperrin, A and Durand, JD Eigen, G Ekelof, T Ekspong, G Ellert, M and Elsing, M Engel, JP Santo, ME Fanourakis, G and Fassouliotis, D Fayot, J Feindt, M Ferrer, A and Ferrer-Ribas, E Ferro, F Fichet, S Firestone, A and Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Franek, B and Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Fuster, J and Galloni, A Gamba, D Gamblin, S Gandelman, M Garcia, C and Gaspar, C Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D Geralis, T Ghodbane, N Gil, I Glege, F and Gokieli, R Golob, B Gomez-Ceballos, G Goncalves, P and Caballero, IG Gopal, G Gorn, L Gouz, Y Gracco, V and Grahl, J Graziani, E Gris, P Grosdidier, G Grzelak, K and Guy, J Haag, C Hahn, F Hahn, S Haider, S and Hallgren, A Hamacher, K Hansen, J Harris, FJ Hauler, F and Hedberg, V Heising, S Hernandez, JJ Herquet, P Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO Holt, PJ Hoorelbeke, S Houlden, M Hrubec, J Huber, M Huet, K Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and Jean-Marie, B Jeans, D Johansson, EK Jonsson, P Joram, C and Juillot, P Jungermann, L Kapusta, F Karafasoulis, K and Katsanevas, S Katsoufis, EC Keranen, R Kernel, G and Kersevan, BP Khokhlov, Y Khomenko, BA Khovanski, NN and Kiiskinen, A King, B Kinvig, A Kjaer, NJ Klapp, O and Klein, H Kluit, P Kokkinias, P Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kriznic, E and Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Lapin, V Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A and Leitner, R Lenzen, G Lepeltier, V Lesiak, T and Lethuillier, M Libby, J Liebig, W Liko, D Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM and Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L and MacNaughton, J Mahon, JR Maio, A Malek, A Malmgren, TGM and Maltezos, S Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Garcia, SMI Masik, J and Mastroyiannopoulos, N Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Meroni, C Meyer, WT Miagkov, A and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moch, M Moeller, R Moenig, K Monge, MR and Moraes, D Moreau, X Morettini, P Morton, G Mueller, U and Muenich, K Mulders, M Mulet-Marquis, C Muresan, R and Murray, WJ Muryn, B Myatt, G Myklebust, T Naraghi, F and Nassiakou, M Navarria, FL Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P Nikolenko, M and Nomokonov, V Nygren, A Obraztsov, V Olshevski, AG and Onofre, A Orava, R Orazi, G Osterberg, K Ouraou, A and Oyanguren, A Paganoni, M Paiano, S Pain, R Paiva, R and Palacios, J Palka, H Papadopoulou, TD Pape, L Parkes, C and Parodi, F Parzefall, U Passeri, A Passon, O Pavel, T and Pegoraro, M Peralta, L Pernicka, M Perrotta, A and Petridou, C Petrolini, A Phillips, HT Pierre, F Pimenta, M Piotto, E Podobnik, T Pol, ME Polok, G Poropat, P and Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A and Radojicic, D Ragazzi, S Rahmani, H Rames, J Ratoff, PN and Read, AL Rebecchi, P Redaelli, NG Regler, M Rehn, J and Reid, D Reinertsen, P Reinhardt, R Renton, PB and Resvanis, LK Richard, F Ridky, J Rinaudo, G Ripp-Baudot, I Rohne, O Romero, A Ronchese, P Rosenberg, EI and Rosinsky, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Schwemling, P Schwering, B Schwickerath, U Scuri, F and Seager, P Sedykh, Y Segar, AM Seibert, N Sekulin, R and Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnova, O Smith, GR Solovianov, O and Sopczak, A Sosnowski, R Spassov, T Spiriti, E Squarcia, S Stanescu, C Stanic, S Stanitzki, M Stevenson, K and Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Taffard, A Tegenfeldt, F and Terranova, F Thomas, J Timmermans, J Tinti, N Tkatchev, LG Tobin, M Todorova, S Tomaradze, A Tome, B and Tonazzo, A Tortora, L Tortosa, P Transtromer, G Treille, D Tristram, G Trochimczuk, M Troncon, C Turluer, ML and Tyapkin, IA Tyapkin, P Tzamarias, S Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P Van den Boeck, W and Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I and Vegni, G Ventura, L Venus, W Verbeure, F Verdier, P and Verlato, M Vertogradov, LS Verzi, V Vilanova, D and Vitale, L Vlasov, E Vodopyanov, AS Voulgaris, G Vrba, V and Wahlen, H Walck, C Washbrook, AJ Weiser, C Wicke, D and Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G and Yi, J Yushchenko, O Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zintchenko, A and Zoller, P Zucchelli, GC Zumerle, G DELPHI Collaboration
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The DELPHI detector at LEP has collected 54 pb(-1) of data at a centre-of-mass energy around 183 GeV during 1997, 158 pb(-1) around 189 GeV during 1998, and 187 pb(-1) between 192 and 200 GeV during 1999. These data were used to measure the average charged particle multiplicity in e(+)e(-)->b (b) over bar events: (n)(b (b) over bar), and the difference delta(hl) between (n)(b (b) over bar) and the multiplicity, (n)(l (l) over bar), in generic light quark (u,d,s) events: delta(hl)(183 GeV) = 4.55 +/- 1.31(stat) +/- 0.73(syst), delta(hl)(189 GeV) = 4.43 +/- 0.85(stat) +/- 0.61(syst), delta(hl)(200 GeV) = 3.39 +/- 0.89(stat) +/- 1.01 (syst). This result is consistent with QCD predictions, while it is inconsistent with calculations assuming that the multiplicity accompanying the decay of a heavy quark is independent of the: mass of the quark itself. (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

233. Limits on the masses of supersymmetric particles at root s=189 GeV

Author: Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Ballestrero, A Bambade, P Barao, F Barbiellini, G and Barbier, R Bardin, DY Barker, G Baroncelli, A Battaglia, M Baubillier, M Becks, KH Begalli, M Behrmann, A and Beilliere, P Belokopytov, Y Benekos, NC Benvenuti, AC and Berat, C Berggren, M Berntzon, L Bertrand, D Besancon, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M Boonekamp, M Booth, PSL Borisov, G Bosio, C and Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Boyko, I Bozovic, I Bozzo, M Bracko, M and Branchini, P Brenner, RA Bruckman, P Brunet, JM Bugge, L and Buran, T Buschbeck, B Buschmann, P Cabrera, S and Caccia, H Calvi, M Camporesi, T Canale, V Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR and Charpentier, P Checchia, P Chelkov, GA Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cieslik, K Collins, P Contri, R Cortina, E Cosme, G and Cossutti, F Costa, M Crawley, HB Crennell, D Crosetti, G and Maestro, JC Czeller, S D'Hondt, J Dalmau, J and Davenport, M Da Silva, W Della Ricca, G Delpierre, P and Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A De Paula, L Dijkstra, H Di Ciaccio, L and Dolbeau, J Doroba, K Dracos, M Drees, J Dris, M and Eigen, G Ekelof, T Ellert, M Elsing, M Engel, JP and Santo, ME Fanourakis, G Fassouliotis, D Feindt, M and Fernandez, J Ferrer, A Ferrer-Ribas, E Ferro, F and Firestone, A Flagmeyer, U Foeth, H Fokitis, E and Fontanelli, F Franek, B Frodesen, AG Fruhwirth, R and Fulda-Quenzer, F Fuster, J Galloni, A Gamba, D Gamblin, S Gandelman, V Garcia, C Gaspar, C Gaspar, M and Gasparini, U Gavillet, P Gazis, EN Gele, D Geralis, T and Gerdyukov, L Ghodbane, N Gil, I Glege, F Gokieli, R and Golob, B Gomez-Ceballos, G Goncalves, P Caballero, IG and Gopal, G Gorn, L Gouz, Y Gracco, V Grahl, J and Graziani, E Gris, P Grosdidier, G Grzelak, K Guy, J and Haag, C Hahn, F Hahn, S Haider, S Hallgren, A and Hamacher, K Hansen, J Harris, FJ Hauler, F Hedberg, V and Heising, S Hernandez, JJ Herquet, P Herr, H Higon, E and Holmgren, SO Holt, PJ Hoorelbeke, S Houlden, M and Hrubec, J Huber, M Hughes, GJ Hultqvist, K Jackson, JN and Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P Jean-Marie, B Jeans, D Johansson, EK Jonsson, P Joram, C Juillot, P Jungermann, L and Kapusta, F Karafasoulis, K Katsanevas, S Katsoufis, EC and Keranen, R Kernel, G Kersevan, BP Khokhlov, Y Khomenko, BA Khovanski, NN Kiiskinen, A King, B Kinvig, A and Kjaer, NJ Klapp, O Kluit, P Kokkinias, P Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kriznic, E and Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Leinonen, L Leisos, A Leitner, R Lenzen, G and Lepeltier, V Lesiak, T Lethuillier, M Libby, J and Liebig, W Liko, D Lipniacka, A Lippi, I Loerstad, B and Loken, JG Lopes, JH Lopez, JM Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L MacNaughton, J Mahon, JR Maio, A and Malek, A Maltezos, S Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Garcia, SM Masik, J and Mastroyiannopoulos, N Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Merle, E Meroni, C Meyer, WT and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K Monge, MR Moraes, D and Morettini, P Morton, G Mueller, U Muenich, K and Mulders, M Mulet-Marquis, C Mundim, LM Muresan, R and Murray, WJ Muryn, B Myatt, G Myklebust, T Naraghi, F and Nassiakou, M Navarria, FL Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P Nikolenko, M and Nomokonov, V Nygren, A Obraztsov, V Olshevski, AG and Onofre, A Orava, R Orazi, G Osterberg, K Ouraou, A and Oyanguren, A Paganoni, M Paiano, S Pain, R Paiva, R and Palacios, J Palka, H Papadopoulou, TD Pape, L Parkes, C and Parodi, F Parzefall, U Passeri, A Passon, O Pavel, T and Pegoraro, M Peralta, L Pernicka, M Perrotta, A and Petridou, C Petrolini, A Phillips, HT Pierre, F Pimenta, M Piotto, E Podobnik, T Poireau, V Pol, ME Polok, G and Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N and Pullia, A Radojicic, D Ragazzi, S Rahmani, H Rames, J and Ratoff, PN Read, AL Rebecchi, P Redaelli, NG Regler, M Rehn, J Reid, D Reinertsen, P Reinhardt, R Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G and Ripp-Baudot, I Romero, A Ronchese, P Rosenberg, EI and Rosinsky, P Roudeau, P Rovelli, T Ruhlmann-Kleider, V and Ruiz, A Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sampsonidis, D Sannino, M Savoy-Navarro, A and Schwemling, P Schwering, B Schwickerath, U Scuri, F and Seager, P Sedykh, Y Segar, AM Seibert, N Sekulin, R and Sette, G Shellard, RC Siebel, M Simard, L Simonetto, F and Sisakian, AN Smadja, G Smirnov, N Smirnova, O Smith, GR Sokolov, A Sopczak, A Sosnowski, R Spassov, T and Spiriti, E Squarcia, S Stanescu, C Stanitzki, M and Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B and Szczekowski, M Szeptycka, M Tabarelli, T Taffard, A and Tchikilev, O Tegenfeldt, F Terranova, F Timmermans, J and Tinti, N Tkatchev, LG Tobin, M Todorova, S Tome, B and Tonazzo, A Tortora, I Tortosa, P Transtromer, G Treille, D Tristram, G Trochimczuk, M Troncon, C Turluer, ML and Tyapkin, IA Tyapkin, P Tzamarias, S Ullaland, O Uvarov, V Valenti, G Vallazza, E Vander Velde, C Van Dam, P and Van den Boeck, W Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G Ventura, L Venus, W and Verbeure, F Verdier, P Verlato, M Vertogradov, LS and Verzi, V Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Voulgaris, G Vrba, V Wahlen, H Washbrook, AJ Weiser, C Wicke, D Wickens, JH Wilkinson, GR Winter, M and Witek, M Wolf, G Yi, J Yushchenko, O Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI and Zintchenko, A Zoller, P Zumerle, G Zupan, M
Abstract: Searches for charginos, neutralinos and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV have been used to set lower limits on the mass of the Lightest Supersymmetric Particle and other supersymmetric particles within the MSSM framework. R-parity conservation has been assumed. The lightest neutralino was found to be heavier than GeV/c(2) independent of the m(0) value. The Lightest chargino, the second-to-lightest neutralino, the next-to-heaviest neutralino, the heaviest neutralino, the sneutrino and the right-handed selectron were found to be heavier than 62.4 GeV/c2, 62.4 GeV/c(2), 99.9 GeV/c(2), 116.0 GeV/c(2), 61.0 GeV/c(2), and 87.0 GeV/c(2), respectively. These limits do not depend on m(0) or M-2 and are Valid for 1 less than or equal to tan beta less than or equal to 40, in the mu region where the lightest neutralino is the LSP. If the sneutrino is heavier than the chargino the lightest neutralino has to be heavier than 32.4 GeV/c(2). The effects of mixings in the third family of sfermions on these limits are discussed. The confidence level of all limits given is 95%. (C) 2000 Published by Elsevier Science B.V.
Published: 2000

234. Hadronization properties of b quarks compared to light quarks in $e^{+} e^{-} \to q\overline{q}$ from 183 to 200 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G D., Alemany, R., Allmendinger, T., Allport, P P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., Benekos, N C., Benvenuti, A C., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Blom, H M., Bonesini, M., Boonekamp, M., Booth, P S L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R A., Bruckman, P., Brunet, J M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Chabaud, V., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H B., Crennell, D., Crepe, S., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J D., Eigen, G., Ekeloef, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A G., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez-Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G J., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keranen, R., Kernel, G., Kersevan, B P., Khokhlov, Yu., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kinvig, A., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J W., Lane, D W., Lapin, V., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T G M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W T., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W A., Mjoernmark, U., Moa, T., Moch, M., Moller, R., Moenig, K., Monge, M R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F L., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V F., Olshevskii, A G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, A L., Rebecchi, P., Redaelli, N G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, A M., Seibert, N., Sekulin, R., Shellard, R C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A N., Smadja, G., Smirnova, O., Smith, G R., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L G., Tobin, M., Todorova, S., Tomaradze, A G., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtroemer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M L., Tyapkin, I A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Dam, P., Van Den Boeck, W., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A J., Weiser, C., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zintchenko, A., Zoller, P., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)
Subjects: High Energy Physics::Phenomenology, Nuclear Theory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment
Abstract: The DELPHI detector at LEP has collected 54 pb −1 of data at a centre-of-mass energy around 183 GeV during 1997, 158 pb −1 around 189 GeV during 1998, and 187 pb −1 between 192 and 200 GeV during 1999. These data were used to measure the average charged particle multiplicity in e + e − →b b ̄ events, 〈n〉 b b ̄ , and the difference δ bl between 〈n〉 b b ̄ and the multiplicity, 〈n〉 l l ̄ , in generic light quark (u,d,s) events: δ bl (183 GeV) =4.55±1.31( stat )±0.73( syst ) , δ bl (189 GeV) =4.43±0.85( stat )±0.61( syst ) , δ bl (200 GeV) =3.39±0.89( stat )±1.01( syst ) . This result is consistent with QCD predictions, while it is inconsistent with calculations assuming that the multiplicity accompanying the decay of a heavy quark is independent of the mass of the quark itself. (Elsevier)
Published: 2000

235. Measurement of the strange quark forward-backward asymmetry around the Z° peak

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Belous, K. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Bonivento, W. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Bracko, M. Branchini, P. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Chapkin, M. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. Da Silva, W. Deghorain, A. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boer, W. De Clercq, C. De Lotto, B. De Min, A. De Paula, L. Dijkstra, H. Di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Espirito Santo, M. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrari, P. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Gris, P. Grosdidier, G. Grzelak, K. Gunther Axelsson, M. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huber, M. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Jeans, D. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Jungermann, L. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kernel, G. Kersevan, B.P. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liebig, W. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neufeld, N. Nicolaidou, R. Nielsen, B.S. Niezurawski, P. Nikolenko, M. Nomokonov, V. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pavel, T. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Rehn, J. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schwemling, Ph. Schwering, B. Schwickerath, U. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Seibert, N. Sekulin, R. Shellard, R.C. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnova, O. Smith, G.R. Sokolov, A. Solovianov, O. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Squarcia, S. Stanescu, C. Stanic, S. Stanitzki, M. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Taffard, A. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Tobin, M. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Tortosa, P. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Dam, P. Van Den Boeck, W. Van Doninck, W.K. Van Eldik, J. Van Lysebetten, A. van Remortel, N. Van Vulpen, I. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Washbrook, A.J. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zintchenko, A. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: A precise measurement of the strange quark forward-backward asymmetry used 3.2M multihadronic events around the Z° peak collected by the DELPHI experiment from 1992 to 1995. The ring imaging Cherenkov detectors in the barrel and end-cap regions identify high energy charged kaons which tag the s quark. The s quark asymmetry was measured at different centre-of-mass energies; m particular at the Z° pole A°ss̄ = 0.1008 ± 0.0113 (stat.) ± 0.0040 (syst.), (1) taking the expected d and u quark asymmetries from the Standard Model. The quark flavour fractions are assumed from the Standard Model and the fragmentation process is modelled by JETSET. From the s quark pole asymmetry the electroweak mixing angle was determined: sin2 θlepteff = 0.2321 ± 0.0029. (2) The parity violating coupling of the s quark to the Z was determined to be: As = 0.909 ± 0.102 (stat.) ± 0.036(syst.). (3).
Published: 2000

236. Searches for Neutral Higgs Bosons in $e^+ e^-$ Collisions around $\sqrt{s}$ = 189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G D., Alemany, R., Allmendinger, T., Allport, P P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., Benekos, N C., Benvenuti, a C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Blom, H M., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P S L., Borgland, a W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R A., Brueckman, P., Brunet, J M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H B., Crennell, D., Crepe, S., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Davenport, M., da Silva, W., Della Ricca, G., Delpierre, P A., Demaria, N., de Angelis, A., de Boer, W., de Clercq, C., de Lotto, B., de Min, A., de Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J D., Eigen, G., Ekeloef, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito-Santo, M C., Fanourakis, G K., Fassouliotis, D., Fayot, J., Feindt, M., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, a G., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F J., Hedberg, V., Heising, S., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G J., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keraenen, R., Kernel, G., Kersevan, B P., Khokhlov, Yu., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kinvig, A., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J W., Lane, D W., Lapin, V., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T G M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Mcpherson, G., Meroni, C., Meyer, W T., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W A., Mjoernmark, U., Moa, T., Moch, M., Moller, R., Moenig, K., Monge, M R., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V F., Olshevskii, a G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, a L., Rebecchi, P., Redaelli, N G., Regler, M., Rehn, J., Reid, D., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, a M., Seibert, N., Sekulin, R., Shellard, R C., Siebel, M., Simard, L., Simonetto, F., Sissakian, a N., Smadja, G., Smirnova, O., Smith, G R., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli de Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L G., Tobin, M., Todorova, S., Tomaradze, a G., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M L., Tyapkin, I A., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., van Dam, P., van den Boeck, W., van Doninck, W K., van Eldik, J., van Lysebetten, A., van Remortel, N., van Vulpen, I., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, a J., Weiser, C., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zintchenko, A., Zoller, P., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract: Searches for neutral Higgs bosons in the Standard Model and the MSSM have been performed using data collected by the DELPHI experiment at a centre-of-mass energy of 188.7 GeV, corresponding to an integrated luminosity of 158 pb^{-1}. These analyses are used, in combination with our results from lower energies, to set new 95% confidence level lower mass bounds on the Standard Model Higgs boson (94.6 GeV/c^2) and on the lightest neutral scalar (82.6 GeV/c^2) and neutral pseudoscalar (84.1 GeV/c^2) Higgs bosons in a representative scan of the MSSM parameters. The results are also interpreted in the framework of a general two-Higgs doublet model., Comment: 36 pages, 21 figures, see also Addendum in hep-ex/0104021
Published: 2000

237. Identified Charged Particles and Resonances in Quark and Gluon Jets

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G D., Alemany, R., Allmendinger, T., Allport, P P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., Benekos, N C., Benvenuti, A C., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Blom, H M., Bonesini, M., Boonekamp, M., Booth, P S L., Borgland, A W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R A., Bruckman, P., Brunet, J M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Chabaud, V., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H B., Crennell, D., Crepe, S., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J D., Eigen, G., Ekeloef, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A G., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez-Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G J., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keranen, R., Kernel, G., Kersevan, B P., Khokhlov, Yu., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kinvig, A., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J W., Lane, D W., Lapin, V., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T G M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W T., Migliore, E., Mirabito, L., Mitaroff, W A., Mjoernmark, U., Moa, T., Moch, M., Moller, R., Moenig, K., Monge, M R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V F., Olshevskii, A G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, A L., Rebecchi, P., Redaelli, N G., Regler, M., Rehn, J., Reid, D., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Seemann, F., Segar, A M., Seibert, N., Sekulin, R., Shellard, R C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A N., Smadja, G., Smirnova, O., Smith, G R., Solovianov, A., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Chikilev, O., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L G., Tobin, M., Todorova, S., Tomaradze, A G., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtroemer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M L., Tyapkin, I A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Dam, P., Van Den Boeck, W., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A J., Weiser, C., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zintchenko, A., Zoller, P., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: human communication, Nuclear Theory, High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], interaction, High Energy Physics::Experiment, communication and language, Nuclear Experiment
Abstract: A sample of 2.2 million hadronic \z decays, selected fythe {\sc Delphi} detector at {\sc Lep} during 1994-199nimprovedmeasurement of inclusive distributions of \pie, \kp anrantiparticles in gluon and quark jets. The production l identified particles were found to be softer in gluon kjets, with a higher multiplicity in gluon jets as obseecharged particles. A significant proton enhancement indindicating that baryon production proceeds directly fr.The maxima, $\xi^*$, of the $\xi$-distributions for kakjets are observed to be different. The study of isoscanshows no indication of an excess of $\phi(1020)$ produ.
Published: 2000

238. Photon events with missing energy at √s = 183 to 189 GeV

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Ajinenko, I. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Bracko, M. Branchini, P. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Charpentier, Ph. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. Da Silva, W. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boer, W. De Clercq, C. De Lotto, B. De Min, A. De Paula, L. Dijkstra, H. Di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Espirito Santo, M. Falk, E. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrari, P. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerdyukov, L. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Gris, P. Grosdidier, G. Grzelak, K. Guy, J. Haag, C. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huber, M. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Jeans, D. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Jungermann, L. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kernel, G. Kersevan, B.P. Khokhlov, Yu. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liebig, W. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moraes, D. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neufeld, N. Nicolaidou, R. Nielsen, B.S. Niezurawski, P. Nikolenko, M. Nomokonov, V. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pavel, T. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Rehn, J. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Ripp-Baudot, I. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schwemling, Ph. Schwering, B. Schwickerath, U. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Seibert, N. Sekulin, R. Shellard, R.C. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sokolov, A. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Squarcia, S. Stanescu, C. Stanic, S. Stanitzki, M. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Taffard, A. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Tobin, M. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Tortosa, P. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Van Dam, P. Van den Boeck, W. Van Eldik, J. Van Lysebetten, A. van Remortel, N. Van Vulpen, I. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verdier, P. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Washbrook, A.J. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zintchenko, A. Zoller, Ph. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The production of single photons has been studied in the reaction e+e- → γ+invisible particles at centre-of-mass energies of 183 GeV and 189 GeV. A previously published analysis of events with multiphoton final states accompanied by missing energy has been updated with 189 GeV data. The data were collected with the DELPHI detector and correspond to integrated luminosities of about 51 pb-1 and 158 pb-1 at the two energies. The number of light neutrino families is measured to be 2.84 ± 0.15(stat) ± 0.14(syst). The absence of an excess of events beyond that expected from Standard Model processes is used to set limits on new physics as described by supersymmetric and composite models. A limit on the gravitational scale is also determined.
Published: 2000

239. Study of B-s(0)-(B-s(0))over-bar oscillations and B-s(0) lifetimes using hadronic decays of B-s(0) mesons

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, Gd, Alemany, R., Allmendinger, T., Allport, Pp, Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, Eg, Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, Wd, Arnoud, Y., Asman, B., Augustin, Je, Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, Dy, Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, Kh, Begalli, M., Behrman, A., Beilliere, P., Belokopytov, Y., Benekos, Nc, Benvenuti, Ac, Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., Bilenky, Ms, Bizouard, Ma, Bloch, D., Blom, Hm, Bonesini, M., Bonivento, W., Boonekamp, M., Booth, Psl, Borgland, Aw, Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, Tjv, Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenke, T., Brenner, Ra, Bruckman, P., Brunet, Jm, Bugge, L., Buran, T., Burgsmueller, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Gimenez, Mvc, Cattai, A., Cavallo, Fr, Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, Ga, Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, Hb, Crennell, D., Crepe, S., Crosetti, G., Maestro, Jc, Czellar, S., Davenport, M., Da Silva, W., Deghorain, A., Della Ricca, G., Delpierre, P., Demaria, N., Angelis, A., Boer, W., Clercq, C., Lotto, B., Min, A., Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, Jd, Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, Jp, Santo, Me, Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Fenyuk, A., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, Ag, Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, En, Gele, D., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Caballero, Ig, Gopal, G., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Grimm, Hj, Gris, P., Grosdidier, G., Grzelak, K., Gunther, M., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, Fj, Hedberg, V., Heising, S., Hernandez, Jj, Herquet, P., Herr, H., Hessing, Tl, Heuser, Jm, Higon, E., Holmgren, So, Holt, Pj, Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hughes, Gj, Hultqvist, K., Jackson, Jn, Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, Ek, Jonsson, P., Joram, C., Juillot, P., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, Ec, Keranen, R., Kernel, G., Kersevan, Bp, Khomenko, Ba, Khovanski, Nn, Kiiskinen, A., King, B., Kinvig, A., Kjaer, Nj, Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Koratzinos, M., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubine, P., Kurowska, J., Kurvinen, K., Lamsa, Jw, Lane, Dw, Langefeld, P., Lapin, V., Laugier, Jp, Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, Jg, Lopes, Jh, Lopez, Jh, Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, Jr, Maio, A., Malek, A., Malmgren, Tgm, Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, Jc, Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti I Garcia, S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Mc Cubbin, M., Mc Kay, R., Mc Nulty, R., Mc Pherson, G., Meroni, C., Meyer, Wt, Miagkov, A., Migliore, E., Mirabito, L., Mitaroff, Wa, Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, MR, Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, Wj, Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, Fl, Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, Bs, Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V., Olshevski, Ag, Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, Td, Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillps, Ht, Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, Me, Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, Pn, Read, Al, Rebecchi, P., Redaelli, Ng, Regler, M., Reid, D., Reinhardt, R., Renton, Pb, Resvanis, Lk, Richard, F., Ridky, J., Rinaudo, G., Rohne, O., Romero, A., Ronchese, P., Rosenberg, Ei, Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schneider, H., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, Am, Sekulin, R., Shellard, Rc, Siebel, M., Simard, L., Simonetto, F., Sisakian, An, Smadja, G., Smirnov, N., Oxana Smirnova, Smith, Gr, Sokolov, A., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stanic, S., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, Lg, Tobin, M., Todorova, S., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Tsirou, A., Turluer, Ml, Tyapkin, Ia, Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., Apeldoorn, Gw, Dam, P., Den Boeck, W., Doninck, Wk, Eldik, J., Lysebetten, A., Remortel, N., Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, Ls, Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, As, Vollmer, C., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, Aj, Weiser, C., Wicke, D., Wickens, Jh, Wilkinson, Gr, Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, Ni, Zintchenko, A., Zucchelli, Gc, Zumerle, G., and Delphi, Collaboration
Subjects: B-DECAY, MODEL, DELPHI DETECTOR, DIFFERENCE, PARAMETER, SYSTEM, MATRIX, QCD
Abstract: Oscillations of B0s mesons have been studied in samples selected from about 3.5 million hadronic Z decays detected by DELPHI between 1992 and 1995. One analysis uses events in the exclusive decay channels: B0s → D-sπ+ or D-sa+1 and B0s → D̄0K-π+ or D̄0K-a+1, where the D decays are completely reconstructed. In addition. B0s-B0s̄ oscillations have been studied in events with an exclusively reconstructed Ds accompanied in the same hemisphere by a high momentum hadron of opposite charge. Combining the two analyses, a limit on the mass difference between the physical B0s states has been obtained: ΔmB0s > 4.0 ps-1 at the 95% C.L. with a sensitivity of ΔmB0s = 3.2 ps-1. Using the latter sample of events, the B0s lifetime has been measured and an upper limit on the decay width difference between the two physical B0s states has been obtained: τB0s = 1.53+0.16-0.15(stat.) ± 0.07(syst.) ps ΔΓB0s/ΓB0s < 0.69 at the 95% C.L. The combination of these results with those obtained using D±sℓ∓ sample gives: ΔmB0s > 4.9 ps-1 at the 95% C.L. with a sensitivity of ΔmB0s = 8.7 ps-1. τB0s = 1.46 ± 0.11 ps and ΔΓB0s/ΓB0s < 0.45 at the 95% C.L.
Published: 2000

240. Charged and identified particles in the hadronic decay of W bosons and in e(+)e(-) -> q(q)over-bar from 130 to 200 GeV

Author: Abreu, P, Adam, W, Adye, T, Adzic, P, Albrecht, Z, Alderweireld, T, Alekseev, Gd, Alemany, R, Allmendinger, T, Allport, Pp, Almehed, S, Amaldi, U, Amapane, N, Amato, S, Anassontzis, Eg, Andersson, P, Andreazza, A, Andringa, S, Anjos, N, Antilogus, P, Apel, Wd, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Ballestrero, A, Bambade, P, Barao, F, Barbiellini, G, Barbier, R, Bardin, Dy, Barker, G, Baroncelli, A, Battaglia, M, Baubillier, M, Becks, Kh, Begalli, M, Behrmann, A, Beilliere, P, Belokopytov, Y, Belous, K, Benekos, Nc, Benvenuti, Ac, Berat, C, Berggren, M, Bertrand, D, Besancon, M, Bigi, M, Bilenky, Ms, Bizouard, Ma, Bloch, D, Blom, Hm, Bonesini, M, Boonekamp, M, Booth, Psl, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Boyko, I, Bozovic, I, Bozzo, M, Bracko, M, Branchini, P, Brenner, Ra, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Buschbeck, B, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Camporesi, T, Canale, V, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Chabaud, V, Chapkin, M, Charpentier, P, Checchia, P, Chelkov, Ga, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cieslik, K, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Costa, M, Crawley, Hb, Crennell, D, Crepe, S, Crosetti, G, Maestro, Jc, Czellar, S, Davenport, M, Da Silva, W, Della Ricca, G, Delpierre, P, Demaria, N, DE ANGELIS, Alessandro, De Boer, W, De Clercq, C, DE LOTTO, Barbara, De Min, A, De Paula, L, Dijkstra, H, Di Ciaccio, L, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Dris, M, Duperrin, A, Durand, Jd, Eigen, G, Ekelof, T, Ekspong, G, Ellert, M, Elsing, M, Engel, Jp, Santo, Me, Fanourakis, G, Fassouliotis, D, Fayot, J, Feindt, M, Ferrer, A, Ferrer Ribas, E, Ferro, F, Fichet, S, Firestone, A, Flagmeyer, U, Foeth, H, Fokitis, E, Fontanelli, F, Franek, B, Frodesen, Ag, Fruhwirth, R, Fulda Quenzer, F, Fuster, J, Galloni, A, Gamba, D, Gamblin, S, Gandelman, M, Garcia, C, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Geralis, T, Ghodbane, N, Gil, I, Glege, F, Gokieli, R, Golob, B, Gomez Ceballos, G, Goncalves, P, Caballero, Ig, Gopal, G, Gorn, L, Gouz, Y, Gracco, V, Grahl, J, Graziani, E, Gris, P, Grosdidier, G, Grzelak, K, Guy, J, Haag, C, Hahn, F, Hahn, S, Haider, S, Hallgren, A, Hamacher, K, Hansen, J, Harris, Fj, Hauler, F, Hedberg, V, Heising, S, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Heuser, Jm, Higon, E, Holmgren, So, Holt, Pj, Hoorelbeke, S, Houlden, M, Hrubec, J, Huber, M, Huet, K, Hughes, Gj, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean Marie, B, Jeans, D, Johansson, Ek, Jonsson, P, Joram, C, Juillot, P, Jungermann, L, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, Ec, Keranen, R, Kernel, G, Kersevan, Bp, Khokhlov, Y, Khomenko, Ba, Khovanski, Nn, Kiiskinen, A, King, B, Kinvig, A, Kjaer, Nj, Klapp, O, Klein, H, Kluit, P, Kokkinias, P, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kriznic, E, Krumstein, Z, Kubinec, P, Kurowska, J, Kurvinen, K, Lamsa, Jw, Lane, Dw, Lapin, V, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Leinonen, L, Leisos, A, Leitner, R, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liebig, W, Liko, D, Lipniacka, A, Lippi, I, Loerstad, B, Loken, Jg, Lopes, Jh, Lopez, Jm, Lopez Fernandez, R, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Mahon, Jr, Maio, A, Malek, A, Malmgren, Tgm, Maltezos, S, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Maskou, A, Martinez Rivero, C, Garcia S, Marti i., Masik, J, Mastroyiannopoulos, N, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, F, Mazzucato, M, Mc Cubbin, M, Mc Kay, R, Mc Nulty, R, Mc Pherson, G, Meroni, C, Metreveli, Z, Meyer, Wt, Miagkov, A, Migliore, E, Mirabito, L, Mitaroff, Wa, Mjoernmark, U, Moa, T, Moch, M, Moeller, R, Moenig, K, Monge, Mr, Moraes, D, Moreau, X, Morettini, P, Morton, G, Mueller, U, Muenich, K, Mulders, M, Mulet Marquis, C, Muresan, R, Murray, Wj, Muryn, B, Myatt, G, Myklebust, T, Naraghi, F, Nassiakou, M, Navarria, Fl, Nawrocki, K, Negri, P, Neufeld, N, Nicolaidou, R, Nielsen, Bs, Niezurawski, P, Nikolenko, M, Nomokonov, V, Nygren, A, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Oyanguren, A, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palacios, J, Palka, H, Papadopoulou, Td, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Passon, O, Pavel, T, Pegoraro, M, Peralta, L, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, Ht, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Pol, Me, Polok, G, Poropat, P, Pozdniako, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, Pn, Read, Al, Rebecchi, P, Redaelli, Ng, Regler, M, Rehn, J, Reid, D, Reinertsen, P, Reinhardt, R, Renton, Pb, Resvanis, Lk, Richard, F, Ridky, J, Rinaudo, G, Ripp Baudot, I, Rohne, O, Romero, A, Ronchese, P, Rosenberg, Ei, Rosinsky, P, Roudeau, P, Rovelli, T, Royon, C, Ruhlmann Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schwemling, P, Schwering, B, Schwickerath, U, Scuri, Fabrizio, Seager, P, Sedykh, Y, Segar, Am, Seibert, N, Sekulin, R, Shellard, Rc, Siebel, M, Simard, L, Simonetto, F, Sisakian, An, Smadja, G, Smirnova, O, Smith, Gr, Solovianov, O, Sopczak, A, Sosnowski, R, Spassov, T, Spiriti, E, Squarcia, S, Stanescu, C, Stanic, S, Stanitzki, M, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Taffard, A, Tegenfeldt, F, Terranova, F, Thomas, J, Timmermans, J, Tinti, N, Tkatchev, Lg, Tobin, M, Todorova, S, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Tortosa, P, Transtromer, G, Treille, D, Tristram, G, Trochimczuk, M, Troncon, C, Turluer, Ml, Tyapkin, Ia, Tyapkin, P, Tzamarias, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Van Dam, P, Van den Boeck, W, Van Eldik, J, Van Lysebetten, A, van Remortel, N, Van Vulpen, I, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verdier, P, Verlato, M, Vertogradov, Ls, Verzi, V, Vilanova, D, Vitale, L, Vlasov, E, Vodopyanov, As, Voulgaris, G, Vrba, V, Wahlen, H, Walck, C, Washbrook, Aj, Weiser, C, Wicke, D, Wickens, Jh, Wilkinson, Gr, Winter, M, Witek, M, Wolf, G, Yi, J, Yushchenko, O, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zintchenko, A, Zoller, P, Zucchelli, Gc, and Zumerle, G.
Published: 2000

241. Addendum :Searches for Neutral Higgs Bosons in $e^+ e^-$ Collisions around $\sqrt(s)$ = 189 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., D. Alekseev, G., Alemany, R., Allmendinger, T., P. Allport, P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., G. Anassontzis, E., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., D. Apel, W., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Yu. Bardin, D., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., H. Becks, K., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., C. Benekos, N., C. Benvenuti, A., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., S. Bilenkii, M., A. Bizouard, M., Bloch, D., M. Blom, H., Bonesini, M., Bonivento, W., Boonekamp, M., S L. Booth, P., W. Borgland, A., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., J V. Bowcock, T., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., A. Brenner, R., Brueckman, P., M. Brunet, J., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., V. Castillo-Gimenez, M., Cattai, A., R. Cavallo, F., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Checchia, P., A. Chelkov, G., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., B. Crawley, H., Crennell, D., Crepe, S., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., A. Delpierre, P., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., D. Durand, J., Eigen, G., Ekeloef, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., C. Espirito-Santo, M., K. Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., G. Frodesen, A., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., N. Gazis, E., Gele, D., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., J. Harris, F., Hedberg, V., Heising, S., Hernandez, J.J., Herquet, P., Herr, H., L. Hessing, T., M. Heuser, J., Higon, E., O. Holmgren, S., J. Holt, P., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., J. Hughes, G., Hultqvist, K., N. Jackson, J., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., K. Johansson, E., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., C. Katsoufis, E., Keraenen, R., Kernel, G., P. Kersevan, B., Khokhlov, Yu., A. Khomenko, B., N. Khovanskii, N., Kiiskinen, A., J. King, B., Kinvig, A., J. Kjaer, N., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., W. Lamsa, J., W. Lane, D., Lapin, V., P. Laugier, J., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., G. Loken, J., H. Lopes, J., M. Lopez, J., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., R. Mahon, J., Maio, A., Malek, A., G M. Malmgren, T., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., C. Marin, J., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Garcia S. Marti, I., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., T. Meyer, W., Myagkov, A., Migliore, E., Mirabito, L., Mitaroff, W.A., Mjoernmark, U., Moa, T., Moch, M., Moller, R., Moenig, K., R. Monge, M., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., J. Murray, W., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., L. Navarria, F., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., S. Nielsen, B., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., F. Obraztsov, V., G. Olshevskii, A., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., D. Papadopoulou, T., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., T. Phillips, H., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., E. Pol, M., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., N. Ratoff, P., L. Read, A., Rebecchi, P., G. Redaelli, N., Regler, M., Rehn, J., Reid, D., Reinhardt, R., B. Renton, P., K. Resvanis, L., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., I. Rosenberg, E., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., M. Segar, A., Seibert, N., Sekulin, R., C. Shellard, R., Siebel, M., Simard, L., Simonetto, F., N. Sissakian, A., Smadja, G., Smirnova, O., R. Smith, G., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., G. Tkatchev, L., Tobin, M., Todorova, S., G. Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., L. Turluer, M., A. Tyapkin, I., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., Van Dam, P., Van Den Boeck, W., K. Van Doninck, W., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., S. Vertogradov, L., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., J. Washbrook, A., Weiser, C., Wicke, D., H. Wickens, J., R. Wilkinson, G., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., I. Zimin, N., Zintchenko, A., Zoller, P., C. Zucchelli, G., Zumerle, G., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published: 2000

242. Charged and identified particles in the hadronic decay of W bosons and in e(+)e(-) -> q(q)over-bar from 130 to 200 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G. D., Alemany, R., Allmendinger, T., Allport, P. P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E. G., Andersson, P., Andreazza, A., Andringa, S., Anjos, N., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D. Y., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K. H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Y., Belous, K., Benekos, N. C., Benvenuti, A. C., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenky, M. S., Bizouard, M. A., Bloch, D., Blom, H. M., Bonesini, M., Boonekamp, M., Booth, P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Gimenez, M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G. A., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H. B., Crennell, D., Crepe, S., Crosetti, G., Maestro, J. C., Czellar, S., Davenport, M., Da Silva, W., Della Ricca, G., Delpierre, P., Demaria, N., Angelis, A., Boer, W., Clercq, C., Lotto, B., Min, A., Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J. D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J. P., Santo, M. E., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A. G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Caballero, I. G., Gopal, G., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F. J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Heuser, J. M., Higon, E., Holmgren, S. O., Holt, P. J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G. J., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E. K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E. C., Keranen, R., Kernel, G., Kersevan, B. P., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N. J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J. W., Lane, D. W., Lapin, V., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopes, J. H., Lopez, J. M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J. R., Maio, A., Malek, A., Malmgren, T. G. M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Maskou, A., Martinez-Rivero, C., Marti I Garcia, S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Mc Cubbin, M., Mc Kay, R., Mc Nulty, R., Mc Pherson, G., Meroni, C., Metreveli, Z., Meyer, W. T., Miagkov, A., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, M. R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W. J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F. L., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B. S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Alessandro Petrolini, Phillips, H. T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M. E., Polok, G., Poropat, P., Pozdniako, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Rebecchi, P., Redaelli, N. G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P. B., Resvanis, L. K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E. I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seibert, N., Sekulin, R., Shellard, R. C., Siebel, M., Simard, L., Simonetto, F., Sisakian, A. N., Smadja, G., Smirnova, O., Smith, G. R., Solovianov, O., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L. G., Tobin, M., Todorova, S., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M. L., Tyapkin, I. A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Dam, P., Den Boeck, W., Eldik, J., Lysebetten, A., Remortel, N., Vulpen, I., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L. S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A. S., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A. J., Weiser, C., Wicke, D., Wickens, J. H., Wilkinson, G. R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zintchenko, A., Zoller, P., Zucchelli, G. C., Zumerle, G., and Delphi Collaboration
Subjects: EVENTS, QCD CASCADES, E+E ANNIHILATIONS, MULTIPLICITY DISTRIBUTIONS, High Energy Physics::Experiment, PETRA ENERGIES, MASS, ORDER QCD, MULTIPARTICLE PRODUCTION, ROOT-S=183 GEV, CROSS-SECTION, QC
Abstract: Inclusive distributions of charged particles in hadronic W decays are experimentally investigated using the statistics collected by the DELPHI experiment at LEP during 1997, 1998 and 1999, at centre-of-mass energies from 183 to around 200 GeV. The possible effects of interconnection between the hadronic decays of two Ws are not observed. Measurements of the average multiplicity for charged and identified particles in q (q) over bar and WW events at centre-of-mass energies from 130 to 200 GeV and in W decays are presented. The results on the average multiplicity of identified particles and on the position xi* of the maximum of the xi (p) = -log(2p/roots) distribution are compared with predictions of JETSET and MLLA calculations.
Published: 2000

243. Search for supersymmetric partners of top and bottom quarks at root s=189 GeV

Author: Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Ballestrero, A Bambade, P Barao, F Barbiellini, G and Barbier, R Bardin, DY Barker, G Baroncelli, A Battaglia, M Baubillier, M Becks, KH Begalli, M Behrmann, A and Beilliere, P Belokopytov, Y Benekos, NC Benvenuti, AC and Berat, C Berggren, M Bertrand, D Besancon, M Bigi, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M and Boonekamp, M Booth, PSL Borgland, W Borisov, G and Bosio, C Botner, O Boudinov, E Bouquet, B Bourdarios, C and Bowcock, TJV Boyko, I Bozovic, I Bozzo, M Bracko, M and Branchini, P Brenner, RA Bruckman, P Brunet, JM and Bugge, L Buran, T Buschbeck, B Buschmann, P Cabrera, S and Caccia, M Calvi, M Camporesi, T Canale, V Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V Charpentier, P Checchia, P Chelkov, GA and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D Crepe, S Crosetti, G Maestro, JC Czellar, S Davenport, M Da Silva, W Della Ricca, G Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A and De Paula, L Dijkstra, H Di Ciaccio, L Dolbeau, J and Doroba, K Dracos, M Drees, J Dris, M Duperrin, A and Durand, JD Eigen, G Ekelof, T Ekspong, G Ellert, M and Elsing, M Engel, JP Santo, ME Fanourakis, G and Fassouliotis, D Fayot, J Feindt, M Ferrer, A and Ferrer-Ribas, E Ferro, F Fichet, S Firestone, A and Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Franek, B and Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Fuster, J and Galloni, A Gamba, D Gamblin, S Gandelman, M Garcia, C and Gaspar, C Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D Geralis, T Gerdyukov, L Ghodbane, N Gil, I Glege, F Gokieli, R Golob, B Gomez-Ceballos, G and Goncalves, P Caballero, IG Gopal, G Gorn, L Gouz, Y and Gracco, V Grahl, J Graziani, E Gris, P Grosdidier, G and Grzelak, K Guy, J Haag, C Hahn, F Hahn, S Haider, S and Hallgren, A Hamacher, K Hansen, J Harris, FJ and Hedberg, V Heising, S Hernandez, JJ Herquet, P Herr, H and Hessing, TL Heuser, JM Higon, E Holmgren, SO Holt, P and Hoorelbeke, S Houlden, M Hrubec, J Huber, M Huet, K and Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and Jean-Marie, B Jeans, D Johansson, EK Jonsson, P Joram, C and Juillot, P Jungermann, L Kapusta, F Karafasoulis, K and Katsanevas, S Katsoufis, EC Keranen, R Kernel, G and Kersevan, BP Khokhlov, Y Khomenko, BA Khovanski, NN and Kiiskinen, A King, B Kinvig, A Kjaer, NJ Klapp, O and Klein, H Kluit, P Kokkinias, P Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kriznic, E and Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Lapin, V Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A and Leitner, R Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Lethuillier, M Libby, J Liebig, W Liko, D and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopes, JH and Lopez, JM Lopez-Fernandez, R Loukas, D Lutz, P and Lyons, L MacNaughton, J Mahon, JR Maio, A Malek, A and Malmgren, TGM Maltezos, S Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI Masik, J Mastroyiannopoulos, N Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Meroni, C and Meyer, WT Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K and Monge, MR Moraes, D Moreau, X Morettini, P Morton, G and Mueller, U Muenich, K Mulders, M Mulet-Marquis, C and Muresan, R Murray, WJ Muryn, B Myatt, G Myklebust, T and Naraghi, F Nassiakou, M Navarria, FL Navas, S Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS and Niezurawski, P Nikolenko, M Nomokonov, V Nygren, A and Obraztsov, V Olshevski, AG Onofre, A Orava, R Orazi, G and Osterberg, K Ouraou, A Paganoni, M Paiano, S Pain, R and Paiva, R Palacios, J Palka, H Papadopoulou, TD Pape, L Parkes, C Parodi, F Parzefall, U Passeri, A and Passon, O Pavel, T Pegoraro, M Peralta, L Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT and Pierre, F Pimenta, M Piotto, E Podobnik, T Pol, ME and Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Rebecchi, P Redaelli, NG and Regler, M Rehn, J Reid, D Reinhardt, R Renton, PB and Resvanis, LK Richard, F Ridky, J Rinaudo, G and Ripp-Baudot, I Rohne, O Romero, A Ronchese, P Rosenberg, EI Rosinsky, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Savoy-Navarro, A Schwemling, P Schwering, B and Schwickerath, U Scuri, F Seager, P Sedykh, Y Segar, AM and Seibert, N Sekulin, R Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnov, N and Smirnova, O Smith, GR Sokolov, A Sopczak, A Sosnowski, R and Spassov, T Spiriti, E Squarcia, S Stanescu, C and Stanic, S Stanitzki, M Stocchi, A Strauss, J Strub, R and Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Taffard, A Tegenfeldt, E Terranova, F Thomas, J and Timmermans, J Tinti, N Tkatchev, LG Tobin, M Todorova, S and Tomaradze, A Tome, B Tonazzo, A Tortora, L Tortosa, P Transtromer, G Treille, D Tristram, G Trochimczuk, M and Troncon, C Turluer, ML Tyapkin, IA Tyapkin, P and Tzamarias, S Ullaland, O Uvarov, V Valenti, G Vallazza, E Vander Velde, C Van Dam, P Van den Boeck, W Van Doninck, WK Van Eldik, JV Van Lysebetten, A van Remortel, N and Van Vulpen, I Vegni, G Ventura, L Venus, W Verbeure, F Verdier, P Verlato, M Vertogradov, LS Verzi, V and Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Voulgaris, G Vrba, V Wahlen, H Walck, C Washbrook, AJ and Weiser, C Wicke, D Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G Yi, J Yushchenko, O Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI and Zintchenko, A Zoller, P Zucchelli, GC Zumerle, G DELPHI Collaboration
Abstract: Searches for supersymmetric partners of top and bottom quarks are presented using data taken by the DELPHI experiment at LEP in 1997 and 1998. No deviations from standard model expectations are observed in these data sets, which are taken at centre-of-mass energies of 183 GeV and 189 GeV and correspond to integrated luminosities of 54 pb(-1) and 158 pb(-1). These results are used in combination with those obtained by DELPHI at lower centre-of-mass energies to exclude regions in the squark-neutralino mass plane at 95% confidence level. (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

244. Determination of the e(+)e(-)->gamma gamma(gamma) cross-section at centre-of-mass energies ranging from 189 GeV to 202 GeV

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G. D., Alemany, R., Allmendinger, T., Allport, P. P., Almehed, S., Amaldi, U., Amapane, Nicola Carlo, Amato, S., Anassontzis, E. G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Ballestrero, A., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D. Y., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K. H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Y., Belous, K., Benekos, N. C., Benvenuti, A. C., Berat, C., Berggren, M., Berntzon, L., Bertrand, D., Besancon, M., Bilenky, M. S., Bizouard, M. A., Bloch, D., Blom, H. M., Bonesini, M., Boonekamp, M., P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., M. V. C., Cattai, A., Cavallo, F. R., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G. A., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Costa, M., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., D'Hondt, J., Dalmau, J., Davenport, M., Silva, W. D., Ricca, G. D., Delpierre, P., Demaria, N., Angelis, A. D., Boer, W. D., Clercq, C. D., Lotto, B. D., Min, A. D., Paula, L. D., Dijkstra, H., Ciaccio, L. D., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Eigen, G., Ekelof, T., Ellert, M., Elsing, M., Engel, J. P., Santo, M. E., Fanourakis, G., Fassouliotis, D., Feindt, M., Fernandez, J., Ferrer, A., Ferrer Ribas, E., Ferro, F., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A. G., Fruhwirth, R., Fulda Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Geralis, T., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez Ceballos, G., Goncalves, P., Caballero, I. G., Gopal, G., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hansen, J., Harris, F. J., Hauler, F., Hedberg, V., Heising, S., Hernandez, J. J., Herquet, P., Herr, H., Higon, E., Holmgren, S. O., Holt, P. J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Hughes, G. J., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean Marie, B., Jeans, D., Johansson, E. K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E. C., Keranen, R., Kernel, G., Kersevan, B. P., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N. J., Klapp, O., Kluit, P., Kokkinias, P., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubinec, P., Kucewicz, W., Kurowska, J., Kurvinen, K., Lamsa, J. W., Lane, D. W., Lapin, V., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Leinonen, L., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopes, J. H., Lopez, J. M., Lopez Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J. R., Maio, A., Malek, A., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Martinez Rivero, C., Garcia, S. M., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Cubbin, M. M., Kay, R. M., Nulty, R. M., Pherson, G. M., Merle, E., Meroni, C., Meyer, W. T., Miagkov, A., Migliore, Ernesto, Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moch, M., Moeller, R., Moenig, K., Monge, M. R., Moraes, D., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet Marquis, C., Mundim, L. M., Muresan, R., Murray, W. J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F. L., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B. S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Mucha, A. O., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Oyanguren, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Poireau, V., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Rebecchi, P., Redaelli, N. G., Regler, M., Rehn, J., Reid, D., Reinertsen, P., Reinhardt, R., Renton, P. B., Resvanis, L. K., Richard, F., Ridky, J., Rinaudo, G., Ripp Baudot, I., Romero, Alessandra, Ronchese, P., Rosenberg, E. I., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Savoy Navarro, A., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seibert, N., Sekulin, R., Sette, G., Shellard, R. C., Siebel, M., Simard, L., Simonetto, F., Sisakian, A. N., Smadja, G., Smirnova, O., Smith, G. R., Solovianov, O., Sopczak, A., Sosnowski, R., Spassov, T., Spiriti, E., Squarcia, S., Stanescu, C., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Taffard, A., Tegenfeldt, F., Terranova, F., Timmermans, J., Tinti, N., Tkatchev, L. G., Tobin, M., Todorova, S., Tome, B., Tonazzo, A., Tortora, L., Tortosa, P., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M. L., Tyapkin, I. A., Tyapkin, P., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Dam, P. V., Den, W. V., Eldik, J. V., Lysebetten, A. V., Remortel, N. v., Vulpen, I. V., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L. S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A. S., Voulgaris, G., Vrba, V., Wahlen, H., Washbrook, A. J., Weiser, C., Wicke, D., Wickens, J. H., Wilkinson, G. R., Winter, M., Wolf, G., Yi, J., Yushchenko, O., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zintchenko, A., Zoller, P., Zumerle, G., and Zupan, M.
Subjects: EXTRA DIMENSIONS, ANNIHILATION, GRAVITY, High Energy Physics::Experiment
Abstract: A test of the QED process e+e- → γγ(γ) is reported. The data analysed were collected with the DELPHI detector in 1998 and 1999 at the highest energies achieved at LEP, reaching 202 GeV in the centre-of-mass. The total integrated luminosity amounts to 375.7 pb-1. The differential and total cross-sections for the process e+e- → γγ were measured, and found to be in agreement with the QED prediction. 95% confidence level (C.L.) lower limits on the QED cut-off parameters of Λ+ > 330 GeV and λ- > 320 GeV were derived. A 95% C.L. lower bound on the mass of an excited electron of 311 GeV/c2 (for λγ = 1) was obtained, s-channel virtual graviton exchange was searched for, resulting in 95% C.L. lower limits on the string mass scale, M(S): M(S) > 713 GeV/c2 (λ = 1) and M(S) > 691 GeV/c2 (γ = -1). (C) 2000 Published by Elsevier Science B.V.
Published: 2000

245. Rapidity-rank structure of p(p)over-bar pairs in hadronic Z(0) decays

Author: Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Bambade, P Barao, F Barbiellini, G Barbier, R Bardin, DY and Barker, G Baroncelli, A Battaglia, M Baubillier, M and Becks, KH Begalli, M Behrmann, A Beilliere, P and Belokopytov, Y Benekos, NC Benvenuti, AC Berat, C and Berggren, M Bertrand, D Besancon, M Bigi, M Bilenky, MS and Bizouard, MA Bloch, D Blom, HM Bonesini, M and Boonekamp, M Booth, PSL Borgland, AW Borisov, G Bosio, C and Botner, O Boudinov, E Bouquet, B Bourdarios, C and Bowcock, TJV Boyko, I Bozovic, I Bozzo, M Bracko, M and Branchini, P Brenner, RA Bruckman, P Brunet, JM Bugge, L and Buran, T Buschbeck, B Buschmann, P Cabrera, S and Caccia, M Calvi, M Camporesi, T Canale, V Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR and Chabaud, V Charpentier, P Checchia, P Chelkov, GA and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D Crepe, S Crosetti, G Maestro, JC Czellar, S Davenport, M Da Silva, W Della Ricca, G Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A and De Paula, L Dijkstra, H Di Ciaccio, L Dolbeau, J and Doroba, K Dracos, M Drees, J Dris, M Duperrin, A and Durand, JD Eigen, G Ekelof, T Ekspong, G Ellert, M and Elsing, M Engel, JP Santo, ME Fanourakis, G and Fassouliotis, D Fayot, J Feindt, M Ferrer, A and Ferrer-Ribas, E Ferro, F Fichet, S Firestone, A and Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Franek, B and Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Fuster, J and Galloni, A Gamba, D Gamblin, S Gandelman, M Garcia, C and Gaspar, C Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D Gerdyukov, L Ghodbane, N Gil, I Glege, F and Gokieli, R Golob, B Gomez-Ceballos, G Goncalves, P and Caballero, IG Gopal, G Gorn, L Gracco, V Grahl, J and Graziani, E Gris, P Grosdidier, G Grzelak, K Guy, J and Haag, C Hahn, F Hahn, S Haider, S Hallgren, A and Hamacher, K Hansen, J Harris, FJ Hedberg, V Heising, S and Hernandez, JJ Herquet, P Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO Holt, PJ Hoorelbeke, S and Houlden, M Hrubec, J Huber, M Huet, K Hughes, GJ and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P Jean-Marie, B and Jeans, D Johansson, EK Jonsson, P Joram, C Juillot, P and Jungermann, L Kapusta, F Karafasoulis, K Katsanevas, S and Katsoufis, EC Keranen, R Kernel, G Kersevan, BP and Khokhlov, Y Khomenko, BA Khovanski, NN Kiiskinen, A and King, B Kinvig, A Kjaer, NJ Klapp, O Klein, H Kluit, P Kokkinias, P Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Krammer, M Kriznic, E Krumstein, Z and Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW and Lapin, V Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Leinonen, L Leisos, A Leitner, R and Lemonne, J Lenzen, G Lepeltier, V Lesiak, T and Lethuillier, M Libby, J Liebig, W Liko, D Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM and Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L and MacNaughton, J Mahon, JR Maio, A Malek, A Malmgren, TGM and Maltezos, S Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI and Masik, J Mastroyiannopoulos, N Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, F Mazzucato, M McCubbin, M McKay, R McNulty, R McPherson, G Meroni, C Meyer, WT and Miagkov, A Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K and Monge, MR Moraes, D Moreau, X Morettini, P Morton, G and Mueller, U Muenich, K Mulders, M Mulet-Marquis, C and Muresan, R Murray, WJ Muryn, B Myatt, G Myklebust, T and Naraghi, F Nassiakou, M Navarria, FL Navas, S Nawrocki, K Negri, P Neufeld, N Nielsen, BS Niezurawski, P and Nikolenko, M Nomokonov, V Nygren, A Obraztsov, V and Olshevski, AG Onofre, A Orava, R Orazi, G Osterberg, K and Ouraou, A Paganoni, M Paiano, S Pain, R Paiva, R and Palacios, J Palka, H Papadopoulou, TD Papageorgiou, K and Pape, L Parkes, C Parodi, F Parzefall, U Passeri, A and Passon, O Pavel, T Pegoraro, M Peralta, L Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT and Pierre, F Pimenta, M Piotto, E Podobnik, T Pol, ME and Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Rebecchi, P Redaelli, NG and Regler, M Rehn, J Reid, D Reinhardt, R Renton, PB and Resvanis, LK Richard, F Ridky, J Rinaudo, G and Ripp-Baudot, I Rohne, O Romero, A Ronchese, P Rosenberg, EI Rosinsky, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Schwemling, P Schwering, B Schwickerath, U Scuri, F and Seager, P Sedykh, Y Segar, AM Seibert, N Sekulin, R and Shellard, RC Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnov, N Smirnova, O Smith, GR and Sokolov, A Sopczak, A Sosnowski, R Spassov, T Spiriti, E and Squarcia, S Stanescu, C Stanic, S Stanitzki, M and Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B and Szczekowski, M Szeptycka, M Tabarelli, T Taffard, A and Tegenfeldt, F Terranova, F Thomas, J Timmermans, J and Tinti, N Tkatchev, LG Tobin, M Todorova, S Tomaradze, A and Tome, B Tonazzo, A Tortora, L Tortosa, P and Transtromer, G Treille, D Tristram, G Trochimczuk, M and Troncon, C Turluer, ML Tyapkin, IA Tzamarias, S and Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P and Van den Boeck, W Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G Ventura, L Venus, W and Verbeure, F Verdier, P Verlato, M Vertogradov, LS and Verzi, V Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Voulgaris, G Vrba, V Wahlen, H Walck, C Washbrook, AJ Weiser, C Wicke, D Wickens, JH Wilkinson, GR and Winter, M Witek, M Wolf, G Yi, J Yushchenko, O and Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E and Zimin, NI Zintchenko, A Zoller, P Zucchelli, GC Zumerle, G DELPHI Collaboration
Abstract: The rapidity-rank structure of pa pairs is used to analyze the mechanism of baryon production in hadronic Z(0) decay. The relative occurrence of the rapidity-ordered configuration p M p, where M is a meson, and that of pp adjacent pairs is compared. The data are found to be consistent with predictions from a mechanism producing adjacent-rank pp pairs, without requiring ‘string-ordered’ p M p configurations. An upper limit of 15% at 90% confidence is determined for the p M p contribution. (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

246. Measurement of the $B^0_s$ Lifetime and Study of $B^0_s - \overline{B^0_s}$ Oscillations using $D_{s}l$ Events

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G D., Alemany, R., Allmendinger, T., Allport, P P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., Benekos, N C., Benvenuti, A C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M S., Bizouard, M A., Bloch, D., Blom, H M., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P S L., Borgland, A W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenke, T., Brenner, R A., Bruckman, P., Brunet, J M., Bugge, L., Buran, T., Burgsmuller, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H B., Crennell, D., Crepe, S., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Davenport, M., Da Silva, W., Deghorain, A., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., De Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito-Santo, M C., Fanourakis, G K., Fassouliotis, D., Fayot, J., Feindt, M., Fenyuk, A., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez-Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Grimm, H J., Gris, P., Grosdidier, G., Grzelak, K., Gunther, M., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F J., Hedberg, V., Heising, S., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hughes, G J., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E K., Jonsson, P., Joram, C., Juillot, P., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keranen, R., Kernel, G., Kersevan, B P., Khomenko, B A., Khovanskii, N N., Kiiskinen, A., King, B J., Kinvig, A., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Koratzinos, M., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krstic, J., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J W., Lane, D W., Langefeld, P., Lapin, V., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liko, D., Lipniacka, A., Lippi, I., Lorstad, B., Loken, J G., Lopes, J H., Lopez, J M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T G M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopoulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., McPherson, G., Meroni, C., Meyer, W T., Migliore, E., Mirabito, L., Mitaroff, W A., Mjornmark, U., Moa, T., Moch, M., Moller, R., Monig, K., Monge, M R., Moreau, X., Morettini, P., Morton, G., Muller, U., Munich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neufeld, N., Nicolaidou, R., Nielsen, B S., Niezurawski, P., Nikolenko, M., Nomokonov, V P., Nygren, A., Obraztsov, V F., Olshevskii, A G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P N., Read, A L., Rebecchi, P., Redaelli, N G., Regler, M., Reid, D., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Ridky, J., Rinaudo, G., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schneider, Henri, Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, A M., Sekulin, R., Shellard, R C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A N., Smadja, G., Smirnova, O., Smith, G R., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stanic, S., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli De Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L G., Tobin, M., Todorova, S., Tomaradze, A G., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Tsirou, A., Turluer, M L., Tyapkin, I A., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Van Apeldoorn, G W., Van Dam, P., Van Doninck, W K., Van Eldik, J., Van Lysebetten, A., Van Remortel, N., Van Vulpen, I., Vassilopoulos, N., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Vollmer, C., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A J., Weiser, C., Wicke, D., Wickens, J H., Wilkinson, G R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zintchenko, A., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: cognition, knowledge philosophy, language, epistemology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], reasoning, High Energy Physics::Experiment, perception, Particle Physics - Experiment
Abstract: Lifetime and oscillations of $\Bs$ mesons have been studied in eventswith a large transverse momentum lepton and a $\Ds$ of opposite electric charge>the same hemisphere, selected from about 3.6 million hadronic $\Zz$decays accumulated by DELPHI between 1992 and 1995. \\The $\Bs$ lifetime and the fractional width difference between the two physical> Lifetime and oscillations of B0s mesons have been studied in events with a large transverse momentum lepton and a Ds of opposite electric charge in the same hemisphere, selected from about 3.6 million hadronic Z0 decays accumulated by DELPHI between 1992 and 1995. The B0s lifetime and the fractional width difference between the two physical B0s states have been found to be: \tau_(B0s) = (1.42^{+0.14}_{-0.13}(stat.) +/- 0.03(syst.)) ps \Delta\Gamma(B0s)/\Gamma(B0s) < 0.46 at the 95% C.L. In the latter result it has been assumed that \tau_(B0s)=\tau_(B0d). Using the same sample, a limit on the mass difference between the physical B0s states has been set: Delta(m_B0s) > 7.4 ps^{-1} at the 95% C.L. with a corresponding sensitivity equal to 8.1 ps^{-1}.
Published: 2000

247. Measurements of the Z partial decay width into c(c)over-bar and multiplicity of charm quarks per b decay

Author: Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Bambade, P Barao, F Barbiellini, G Barbier, R Bardin, DY and Barker, G Baroncelli, A Battaglia, M Baubillier, M and Becks, KH Begalli, M Behrmann, A Beilliere, P and Belokopytov, Y Benekos, NC Benvenuti, AC Berat, C and Berggren, M Bertini, D Bertrand, D Besancon, M Bigi, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M Bonivento, W Boonekamp, M Booth, PSL Borgland, AW and Borisov, G Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Boyko, I Bozovic, I Bozzo, M and Branchini, P Brenke, T Brenner, RA Bruckmann, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschbeck, B Buschmann, P Cabrera, S Caccia, M Calvi, M and Camporesi, T Canale, V Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Checchia, P Chelkov, GA and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E and Cosme, G Cossutti, F Cowell, JH Crawley, HB and Crennell, D Crepe, S Crosetti, G Maestro, JC Czellar, S and Davenport, M Da Silva, W Deghorain, A Della Ricca, G and Delpierre, P Demaria, N De Angelis, A De Boer, W De Clercq, C De Lotto, B De Min, A De Paula, L Dijkstra, H and Di Ciaccio, L Dolbeau, J Doroba, K Dracos, M Drees, J Dris, M Duperrin, A Durand, JD Eigen, G Ekelof, T and Ekspong, G Ellert, M Elsing, M Engel, JP Erzen, B and Santo, ME Falk, E Fanourakis, G Fassouliotis, D and Fayot, J Feindt, M Ferrari, P Ferrer, A Ferrer-Ribas, E and Ferro, F Fichet, S Firestone, A Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Franek, B Frodesen, AG and Fruhwirth, R Fulda-Quenzer, F Fuster, J Galloni, A and Gamba, D Gamblin, S Gandelman, M Garcia, C Gaspar, C and Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerdyukov, L Ghodbane, N Gil, I Glege, F Gokieli, R and Golob, B Gomez-Ceballos, G Goncalves, P Caballero, IG and Gopal, G Gron, L Gorski, M Gouz, Y Gracco, V Grahl, J Graziani, E Green, C Grimm, HJ Gris, P Grosdidier, G Grzelak, K Gunther, M Guy, J Hahn, F Hahn, S and Haider, S Hallgren, A Hamacher, K Hansen, J Harris, FJ and Hedberg, V Heising, S Hernandez, JJ Herquet, P Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO Holt, PJ Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and Jean-Marie, B Johansson, EK Jonsson, P Joram, C Janik, R and Jarlskog, C Jarlskog, G Jarry, P Jean-Marie, B and Jahansson, EK Jonsson, P Joram, C Juillot, P Kapusta, F and Karafasoulis, K Katsanevas, S Katsoufis, EC Keranen, R and Kersevan, BP Khomenko, BA Khovanski, NN Kiiskinen, A and King, B Kinvig, A Kjaer, NJ Klapp, O Klein, H Kluit, P Kokkinias, P Koratzinos, M Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Kriznic, E Krstic, P and Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Langefeld, P Lapin, V Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V Leinonen, L Leisos, A Leitner, R Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Lethuillier, M Libby, J Liko, D and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM Lopez-Fernandez, R Loukas, D Lutz, P and Lyons, L MacNaughton, J Mahon, JR Maio, A Malek, A and Malmgren, TGM Maltezos, S Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI Masik, J Mastroyiannopoulos, N Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Meroni, C and Meyer, WT Miagkov, A Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moch, M Moeller, R and Moenig, K Monge, MR Moreau, X Morettini, P Morton, G and Mueller, U Muenich, K Mulders, M Mulet-Marquis, C and Muresan, R Murray, WJ Muryn, B Myatt, G Myklebust, T and Naraghi, F Nassiakou, M Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neufeld, N Neumeister, N and Nicolaidou, R Nielsen, BS Nikolenko, M Nomokonov, V and Normand, A Nygren, A Obraztsov, V Olshevski, AG Onofre, A Orava, R Orazi, G Osterberg, K Ouraou, A Paganoni, M Paiano, S Pain, R Paiva, R Palacios, J Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Parzefall, U Passeri, A Passon, O Pegoraro, M and Peralta, L Pernicka, M Perrotta, A Petridou, C and Petrolini, A Phillips, HT Pierre, F Pimenta, M Piotto, E and Podobnik, T Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Ratoff, PN Read, AL Rebecchi, P and Redaelli, NG Regler, M Reid, D Reinhardt, R Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G and Rohne, O Romero, A Ronchese, P Rosenberg, EI Rosinsky, P and Roudeau, P Rovelli, T Royon, C Ruhlmann-Kleider, V and Ruiz, A Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sampsonidis, D Sannino, M Schneider, H and Schwemling, P Schwering, B Schwickerath, U Schyns, MAE and Scuri, F Seager, P Sedykh, Y Segar, AM Sekulin, R and Shellard, RC Sheridan, A Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G Smirnova, O Smith, GR and Sokolov, A Sopczak, A Sosnowski, R Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stanic, S and Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B and Szczekowski, M Szeptycka, M Tabarelli, T Tchikilev, O and Tegenfeldt, F Terranova, F Thomas, J Timmermans, J and Tinti, N Tkatchev, LG Todorova, S Tomaradze, A Tome, B and Tonazzo, A Tortora, L Transtromer, G Treille, D and Tristram, G Trochimczuk, M Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tzamarias, S Ullaland, O Uvarov, V and Valenti, G Vallazza, E Vander Velde, C Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eldik, J Van Lysebetten, A and Van Remortel, N Van Vulpen, I Vassilopoulos, N Vegni, G and Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Verzi, V Vilanova, D Vitale, L Vlasov, E and Vodopyanov, AS Vollmer, C Voulgaris, G Vrba, V and Wahlen, H Walck, C Weiser, C Wicke, D Wickens, JH and Wilkinson, GR Winter, M Witek, M Wolf, G Yi, J and Yushchenko, O Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zucchelli, GC Zumerle, G and DELPHI Collaboration
Subjects: Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The partial decay width R-c of the Z into c (c) over bar quark pair and the number of charm quarks n(c) per b decay are measured with the DELPHI detector at LEP 1. Particle identification provides clear DO, D+, D-s(+) and Lambda(c)(+) signatures. The charm hadron production rate is measured in each channel by a fit to the scaled energy, impact parameter information and the invariant mass spectrum. Two measurements of R-c are presented, from the D*(+) production rate and from the overall charm counting, including strange charm baryon production, in c (c) over bar events. The multiplicity n(c), which includes hidden c (c) over bar and strange charm baryon production, is inferred from the charm counting in bb events. The final results are R-c = 0.1665 +/- 0.0095 and n(c) = 1.166 +/- 0.086.
Published: 2000

248. Determination of $\mid V_{ub} \mid/\mid V_{cb} \mid$ with DELPHI at LEP

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., Alekseev, G.D., Alemany, R., Allmendinger, T., Allport, P.P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E.G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W.D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, Guido, Barbier, R., Bardin, D.Yu., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K.H., Begalli, M., Behrmann, A., Beilliere, P., Belokopytov, Yu., Belous, K., Benekos, N.C., Benvenuti, A.C., Berat, C., Berggren, M., Bertrand, D., Besancon, M., Bigi, M., Bilenkii, M.S., Bizouard, M.A., Bloch, D., Blom, H.M., Bonesini, M., Boonekamp, M., Booth, P.S.L., Borgland, A.W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenner, R.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Castillo Gimenez, M.V., Cattai, A., Cavallo, F.R., Chabaud, V., Chapkin, M., Charpentier, P., Checchia, P., Chelkov, G.A., Chierici, R., Shlyapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H.B., Crennell, D., Crepe, S., Crosetti, G., Cuevas Maestro, J., Czellar, S., Davenport, M., da Silva, W., Della Ricca, G., Delpierre, P.A., Demaria, N., de Angelis, A., de Boer, W., de Clercq, C., de Lotto, B., de Min, A., de Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J.D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Espirito Santo, M., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A.G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Gonzalez Caballero, I., Gopal, G., Gorn, L., Guz, Yu., Gracco, V., Grahl, J., Graziani, E., Gris, P., Grosdidier, G., Grzelak, K., Guy, J., Haag, C., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F.J., Hedberg, V., Heising, S., Hernandez, J.J., Herquet, P., Herr, H., Hessing, T.L., Heuser, J.M., Higon, E., Holmgren, S.O., Holt, P.J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huber, M., Huet, K., Hughes, G.J., Hultqvist, K., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E.K., Jonsson, P., Joram, C., Juillot, P., Jungermann, L., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E.C., Keranen, R., Kernel, G., Kersevan, B.P., Khomenko, B.A., Khovanskii, N.N., Kiiskinen, A., King, B.J., Kinvig, A., Kjaer, N.J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Kostyukhin, V., Kourkoumelis, C., Kuznetsov, O., Krammer, M., Kriznic, E., Krumshtein, Z., Kubinec, P., Kurowska, J., Kurvinen, K., Lamsa, J.W., Lane, D.W., Lapin, V., Laugier, J.P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Leinonen, L., Leisos, A., Leitner, R., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liebig, W., Liko, D., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J.G., Lopes, J.H., Lopez, J.M., Lopez-Fernandez, R., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J.R., Maio, A., Malek, A., Malmgren, T.G.M., Maltezos, S., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Mastroyiannopo Ulos, N., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, F., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Mcpherson, G., Meroni, C., Meyer, W.T., Migliore, E., Mirabito, L., Mitaroff, W.A., Mjornmark, U., Moa, T., Moch, M., Moller, R., Monig, K., Monge, M.R., Moraes, D., Moreau, X., Morettini, P., Morton, G., Mueller, U., Muenich, K., Mulders, M., Mulet-Marquis, C., Muresan, R., Murray, W.J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Nassiakou, M., Navarria, F.L., Navas, S., Nawrocki, K., Negri, P., Neufeld, N., Nicolaidou, R., Nielsen, B.S., Niezurawski, P., Nikolenko, M., Nomokonov, V., Nygren, A., Obraztsov, V.F., Olshevskii, A.G., Onofre, A., Orava, R., Orazi, G., Osterberg, K., Ouraou, A., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palacios, J., Palka, H., Papadopoulou, T.D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Passon, O., Pavel, T., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Pierre, F., Pimenta, M., Piotto, E., Podobnik, T., Pol, M.E., Polok, G., Poropat, P., Pozdnyakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P.N., Read, A.L., Rebecchi, P., Redaelli, N.G., Regler, M., Rehn, J., Reid, D., Reinhardt, R., Renton, P.B., Resvanis, L.K., Richard, F., Ridky, J., Rinaudo, G., Ripp-Baudot, I., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E.I., Rosinsky, P., Roudeau, P., Rovelli, T., Royon, C., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sampsonidis, D., Sannino, M., Schwemling, P., Schwering, B., Schwickerath, U., Scuri, F., Seager, P., Sedykh, Yu., Segar, A.M., Seibert, N., Sekulin, R., Shellard, R.C., Siebel, M., Simard, L., Simonetto, F., Sissakian, A.N., Smadja, G., Smirnova, O., Smith, G.R., Sokolov, A., Solovyanov, O., Sopczak, A., Sosnowski, R., Spassoff, Tz., Spiriti, E., Squarcia, S., Stanescu, C., Stanic, S., Stanitzki, M., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli de Fatis, T., Taffard, A., Tegenfeldt, F., Terranova, F., Thomas, J., Timmermans, J., Tinti, N., Tkatchev, L.G., Tobin, M., Todorova, S., Tomaradze, A.G., Tome, B., Tonazzo, A., Tortora, L., Tortosa, Pablo, Transtromer, G., Treille, D., Tristram, G., Trochimczuk, M., Troncon, C., Turluer, M.L., Tyapkin, I.A., Tzamarias, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., van Dam, P., Vanden Boeck, W., van Doninck, W.K., van Eldik, J., van Lysebetten, A., van Remortel, N., van Vulpen, I., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verdier, P., Verlato, M., Vertogradov, L.S., Verzi, V., Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, A., Voulgaris, G., Vrba, V., Wahlen, H., Walck, C., Washbrook, A.J., Weiser, C., Wicke, D., Wickens, J.H., Wilkinson, G.R., Winter, M., Witek, M., Wolf, G., Yi, J., Yushchenko, O., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N.I., Zintchenko, A., Zoller, P., Zucchelli, G.C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)
Subjects: High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment
Abstract: The ratio of the CKM quark-mixing matrix elements |V_{ub}|/|V_{cb}|has been measured using B hadron semileptonic decays.The analysis is based on a novel technique, recently proposed by theoreticians, that uses the reconstructed mass M_X ofthe secondary hadronic system produced in association with an identified lepton.Since B rightarrow X_u \ell \bar \nu transitions are characterisedby hadronic masses below those of the $D$ mesons produced inB \rightarrow X_c \ell \bar \nu transitions, events with a reconstructed value of M_X significantly below the D massare selected.Further signal enrichments are obtained using thetopology of reconstructed decays and hadron identification.A fit to the numbers of decays in the b\to u enriched and depleted samples with M_X above and below 1.6 GeV/c^2and to the shapes of the lepton energy distribution in the Brest frame gives |V_{ub}|/|V_{cb}|= \mathrm{0.103^{+0.011}_{-0.012}~(stat.)\pm0.016~(syst.)\pm0.010~(mo del)}%The model dependance of $b \rightarrow u \ell \bar \nu$%is significantly reduced with this method.and, correspondingly, a charmless semileptonic $B$ decay branching fractionof BR($B \rightarrow X_u \ell \bar \nu) = \mathrm{(1.57 \pm 0.35~(stat.)\pm0.48~(syst.)\pm0.27~(model))\times 10^{-3}}$.
Published: 2000

249. Determination of P(c → D*+) and BR(c → l+) at LEP 1

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Ajinenko, I. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Bonivento, W. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Branchini, P. Brenke, T. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Cowell, J.-H. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. da Silva, W. Deghorain, A. Della Ricca, G. Delpierre, P. Demaria, N. de Angelis, A. de Boer, W. de Clercq, C. de Lotto, B. de Min, A. de Paula, L. Dijkstra, H. di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Erzen, B. Espirito Santo, M. Falk, E. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrari, P. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerdyukov, L. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gorski, M. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Green, C. Grimm, H.-J. Gris, P. Grosdidier, G. Grzelak, K. Gunther, M. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kersevan, B.P. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krstic, J. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Langefeld, P. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Miagkov, A. Migliore, E. Mirabito, L. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Nemecek, S. Neufeld, N. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nikolenko, M. Nomokonov, V. Normand, A. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmanr, H. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schneider, H. Schwemling, Ph. Schwering, B. Schwickerath, U. Schyns, M.A.E. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Sekulin, R. Shellard, R.C. Sheridan, A. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Solovianov, O. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stanescu, C. Stanic, S. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Van Apeldoorn, G.W. Van Dam, P. Van Eldik, J. Van Lysebetten, A. Van Remortel, N. Van Vulpen, I. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vollmer, C. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zucchelli, G.C. Zumerle, G.
Abstract: The probability P(c → D*+) that a charm quark fragments into a D*+ meson and the c → l+ semileptonic branching fraction were measured in Z0 decay into cc̄ events. From the analysis of 3.5 Million Z0 events collected from 1992 to 1995, a sample of charm meson decays with 81% cc̄ purity was selected. The product of the c → D*+ fragmentation probability times the D*+ → D0π+ branching fraction was measured to be: P(c → D*+) · BR(D*+ → D0π+) = 0.174 ± 0.010(stat) ± 0.004(syst). Using the world averaged value for BR(D*+ → D0π+), the fragmentation probability is inferred: P(c → D*+) = 0.255 ± 0.015(stat) ± 0.006(syst) ± 0.005(syst.BR). From the same sample, 1828 ± 51 identified leptons in the opposite hemisphere were selected. From this sample, the charm semileptonic branching fraction was measured to be: BR(c → l+) = 0.0958 ± 0.0042(stat) ± 0.0028(syst).
Published: 2000

250. Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quark jets

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Albrecht, Z. Alderweireld, T. Alekseev, G.D. Alemany, R. Allmendinger, T. Allport, P.P. Almehed, S. Amaldi, U. Amapane, N. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Andringa, S. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbiellini, G. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Behrmann, A. Beilliere, P. Belokopytov, Y. Belous, K. Benekos, N.C. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Blom, H.M. Bonesini, M. Bonivento, W. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Bracko, M. Branchini, P. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buschbeck, B. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. Camporesi, T. Canale, V. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Chabaud, V. Chapkin, M. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cieslik, K. Collins, P. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crepe, S. Crosetti, G. Cuevas Maestro, J. Czellar, S. Davenport, M. Da Silva, W. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boer, W. De Clercq, C. De Lotto, B. De Min, A. De Paula, L. Dijkstra, H. Di Ciaccio, L. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Dris, M. Duperrin, A. Durand, J.-D. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Espirito Santo, M. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Ferrari, P. Ferrer, A. Ferrer-Ribas, E. Ferro, F. Fichet, S. Firestone, A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gamblin, S. Gandelman, M. Garcia, C. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Gomez-Ceballos, G. Goncalves, P. Gonzalez Caballero, I. Gopal, G. Gorn, L. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Gris, P. Grosdidier, G. Grzelak, K. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Hansen, J. Harris, F.J. Hedberg, V. Heising, S. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Hoorelbeke, S. Houlden, M. Hrubec, J. Huber, M. Huet, K. Hughes, G.J. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Jeans, D. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Jungermann, L. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Kernel, G. Kersevan, B.P. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kinvig, A. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Kokkinias, P. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kriznic, E. Krumstein, Z. Kubinec, P. Kurowska, J. Kurvinen, K. Lamsa, J.W. Lane, D.W. Langefeld, P. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liebig, W. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Maltezos, S. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Masik, J. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, F. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Mc Pherson, G. Meroni, C. Meyer, W.T. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moch, M. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Mueller, U. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Nassiakou, M. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neufeld, N. Nicolaidou, R. Nielsen, B.S. Niezurawski, P. Nikolenko, M. Nomokonov, V. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Passon, O. Pavel, T. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Rehn, J. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Ripp-Baudot, I. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Royon, Ch. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schwemling, Ph. Schwering, B. Schwickerath, U. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Seibert, N. Sekulin, R. Shellard, R.C. Siebel, M. Simard, L. Simonetto, F. Sisakian, A.N. Smadja, G. Smirnova, O. Smith, G.R. Sokolov, A. Solovianov, O. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Squarcia, S. Stanescu, C. Stanic, S. Stanitzki, M. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Taffard, A. Tegenfeldt, F. Terranova, F. Thomas, J. Timmermans, J. Tinti, N. Tkatchev, L.G. Tobin, M. Todorova, S. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Tortosa, P. Transtromer, G. Treille, D. Tristram, G. Trochimczuk, M. Troncon, C. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Dam, P. Van den Boeck, W. Van Doninck, W.K. Van Eldik, J. Van Lysebetten, A. van Remortel, N. Van Vulpen, I. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Washbrook, A.J. Weiser, C. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wolf, G. Yi, J. Yushchenko, O. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zintchenko, A. Zoller, Ph. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The fragmentation functions of quarks and gluons are measured in Various three-jet topologies in Z decays from the full data set collected with the DELPHI detector at the Z resonance between 1992 and 1995. The results at different values of transverse momentum-like scales are compared. A parameterization of the quark and gluon fragmentation functions at a fixed reference scale is given. The quark and gluon fragmentation functions show the predicted pattern of scaling violations. The scaling violation for quark jets as a function of a transverse momentum-like scale is in a good agreement with that observed in lower energy e(+)e(-) annihilation experiments. For gluon jets it appears to be significantly stronger. The scale dependences of the gluon and quark fragmentation functions agree with the prediction of the DGLAP evolution equations from which the colour factor ratio C-A/C-F is measured to be: C-A/C-F = 2.26 +/- 0.09(stat.) +/- 0.06(sys.) +/- 0.12(clus.,scale).
Published: 2000

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