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61 results on '"J.W. Lamsa"'

1. Measurement of the mass and width of the W boson in e+e− collisions at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E. Anashkin, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, N. Anjos, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, T.F. Bellunato, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, N. Besson, M.S. Bilenky, D. Bloch, H.M. Blom, L. Bol, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, P. Buschmann, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, J. Croix, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, S. Haug, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, O. Hertz, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, M. Kucharczyk, J. Kurowska, J.W. Lamsa, J.-P. Laugier, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, K. Moenig, M.R. Monge, J. Montenegro, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, R. Nicolaidou, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, L. Peralta, V. Perepelitsa, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, L. Salmi, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, C. Schwanda, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, Y. Sedykh, A.M. Segar, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, 7. Clean energy, 01 natural sciences, Beam energy
Abstract: A measurement of the W mass and width has been performed by the DELPHI collaboration using the data collected during 1998. The data sample has an integrated luminosity of 155 pb^{-1} and an average centre-of-mass energy of 188.6 GeV. Results are obtained by applying the method of direct reconstruction of the mass of the W from its decay products in both the W+W- -> lvqq and W+W- -> qqqq channels. The W mass result for the 1998 data set is M_W = 80.387 +/- 0.087 (stat) +/- 0.034 (syst) +/- 0.017 (LEP) +/- 0.035 (FSI) GeV/c2, where FSI represents the uncertainty due to final state interaction effects in the qqqq channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator. Combining this result with those previously published by the DELPHI collaboration gives the result M_W = 80.359 +/- 0.074 (stat) +/- 0.032 (syst) +/- 0.017 (LEP) +/- 0.033 (FSI) GeV/c2. The combined value for the W width is \Gamma_W = 2.266 +/- 0.176 (stat) +/- 0.056 (syst) +/- 0.052 (FSI) GeV/c2.
Published: 2001

2. Measurement of V from the decay process →Dℓ

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M.-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Analytical chemistry, Form factor (quantum field theory), 01 natural sciences, Pion, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit)
Abstract: A new precise measurement of |V_{cb}| and of the branching ratio BR(\bar{B^0} -> D^{*+} \ell^- \bar{\nu_\ell}) has been performed using a sample of about 5000 semileptonic decays \bar{B^0} -> D^{*+} \ell^- \bar{\nu_\ell}, selected by the DELPHI detector at LEP I by tagging the soft pion from D^{*+} -> D^0 \pi^+. The results are: V_{cb}=(39.0 +/- 1.5 (stat.) ^{+2.5}_{-2.6} (syst. exp.) +/- 1.3 (syst. th.)) x 10^{-3} BR(\bar{B^0} -> D^{*+} \ell^- \bar{\nu_\ell})=(4.70 +/- 0.13 (stat.) ^{+0.36}_{-0.31} (syst. exp.))% The analytic dependences of the differential cross-section and of the Isgur Wise form factor as functions of the variable w = v_{B^0}.v_{D^*} have also been obtained by unfolding the experimental resolution.
Published: 2001

3. Search for spontaneous R-parity violation at GeV and 189 GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E. Anashkin, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, N. Anjos, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, N. Besson, M.S. Bilenky, D. Bloch, H.M. Blom, L. Bol, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, E. Brodet, P. Bruckman, J.-M. Brunet, L. Bugge, P. Buschmann, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, J. Croix, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, K. Hamilton, J. Hansen, F.J. Harris, S. Haug, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, O. Hertz, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, M. Kucharczyk, J. Kurowska, J.W. Lamsa, J.-P. Laugier, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, E. Merle, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, K. Moenig, M.R. Monge, J. Montenegro, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, R. Nicolaidou, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, L. Peralta, V. Perepelitsa, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, L. Salmi, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, C. Schwanda, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, Y. Sedykh, A.M. Segar, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, A. Sokolov, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Missing energy, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Parameter space, 01 natural sciences, Chargino, R-parity, 0103 physical sciences, High Energy Physics::Experiment, Limit (mathematics), Nuclear Experiment, 010306 general physics, Lepton
Abstract: Searches for spontaneous R-parity violating signals at sqrt(s) = 183 GeV and sqrt(s) = 189 GeV have been performed using the 1997 and 1998 DELPHI data, under the assumption of R-parity breaking in the third lepton family. The expected topology for the decay of a pair of charginos into two acoplanar taus plus missing energy was investigated and no evidence for a signal was found. The results were used to derive a limit on the chargino mass and to constrain the allowed domains of the MSSM parameter space.
Published: 2001

4. Search for R-parity violation with a coupling at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M.-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Coupling (probability), 01 natural sciences, 7. Clean energy, Standard Model, Chargino, Pair production, R-parity, 0103 physical sciences, Neutralino, High Energy Physics::Experiment, 010306 general physics, Energy (signal processing), Lepton
Abstract: Searches for pair production of gauginos and squarks in e+e- collisions at a centre-of-mass energy of 189 GeV have been performed on data corresponding to an integrated luminosity of 158 pb^{-1} collected by the DELPHI detector at LEP. The data were analyzed under the assumption of non-conservation of R-parity through a single dominant Ubar Dbar Dbar coupling between squarks and quarks. Typical final states contain between 4 and 10 jets with or without additional leptons. No excess of data above Standard Model expectations was observed. The results were used to constrain domains of the MSSM parameter space and derive limits on the masses of supersymmetric particles. The following mass limits at 95% CL were obtained from these searches: neutralino mass: m_{\tilde{\chi^0_{1}}} \geq 32 GeV chargino mass: m_{\tilde{\chi^+_{1}}} \geq 94 GeV stop and sbottom mass (indirect decay) with \Delta M > 5 GeV: m_{\tilde{t_1}} \geq 74 GeV, for \Phi_{mix}=0 rad m_{\tilde{t_1}} \geq 59 GeV, for \Phi_{mix}=0.98 rad m_{\tilde{b_1}} \geq 72 GeV, for \Phi_{mix}=0 rad. The angle \phi_{mix} is the mixing angle between left and right handed quarks.
Published: 2001

5. Determination of the e+e−→γγ(γ) cross-section at centre-of-mass energies ranging from 189 GeV to 202 GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M.-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, W. Kucewicz, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, A. Oblakowska Mucha, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Graviton, Lambda, 01 natural sciences, Upper and lower bounds, Gamma gamma, Cross section (geometry), Excited state, 0103 physical sciences, High Energy Physics::Experiment, Mass scale, 010306 general physics
Abstract: A test of the QED process e+e- -> gamma gamma (gamma) 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- -> gamma gamma 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 Lambda+ > 330 GeV and Lambda- > 320 GeV were derived. A 95% C.L. lower bound on the mass of an excited electron of 311 GeV/c^2 (for lambda_gamma = 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/c^2 (lambda = 1) and M_S > 691 GeV/c^2 (lambda = -1).
Published: 2000

6. Rapidity-rank structure of pairs in hadronic Z0 decays

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Hadron, Structure (category theory), Rank (differential topology), 01 natural sciences, Baryon, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics
Abstract: 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

7. Limits on the masses of supersymmetric particles at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, O. Tchikilev, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Selectron tube, Particle physics, Chargino, 010308 nuclear & particles physics, 0103 physical sciences, Neutralino, 010306 general physics, 01 natural sciences, Lightest Supersymmetric Particle
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 32.3 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/c^2, 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 \leq tan(beta) \leq 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

8. Search for SUSY with R-parity violating couplings at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Scalar (mathematics), Supersymmetry, Lambda, 01 natural sciences, Standard Model, Pair production, R-parity, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Energy (signal processing), Lepton
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{\chi}^0} > 30 GeV/c^2 and m_{\tilde{\chi}^\pm} > 94 GeV/c^2; m_{\tilde{\nu}} > 76.5 GeV/c^2 (direct and indirect decays); m_{\tilde{\ell}_R} > 83 GeV/c^2 (indirect decay only).
Published: 2000

9. Determination of |Vub|/|Vcb| with DELPHI at LEP

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, A. Sokolov, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, G. Zumerle, UCL - SST/IRMP - Institut de recherche en mathématique et physique, BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, Hadron, FOS: Physical sciences, 01 natural sciences, Partícules (Física nuclear), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Nuclear Experiment, 010306 general physics, DELPHI, Physics, Energy distribution, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Rest frame, LARGE ELECTRON POSITRON COLLIDER, PARTICLE PHYSICS, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract: The ratio of the CKM quark-mixing matrix elements |Vub|/|Vcb| 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 lepton anti-nu transitions are characterised by hadronic masses below those of the D mesons produced in B -> X_c lepton anti-nu 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 |Vub|/|Vcb|= 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 lepton anti-nu) = (1.57 +/- 0.35 (stat.) +/- 0.48 (syst.) +/- 0.27 (model)) x 10^{-3}., 24 pages, 8 figures
Published: 2000

10. Search for heavy stable and long-lived particles in e+e− collisions at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Time projection chamber, 010308 nuclear & particles physics, Detector, 01 natural sciences, Ring-imaging Cherenkov detector, Charged particle, Ionization, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Cherenkov radiation
Abstract: A search for stable and long-lived heavy charged particles was performed using the data taken by the DELPHI experiment at an energy of 189 GeV. The Cherenkov light detected in the Ring Imaging Cherenkov Detector and the ionisation loss measured in the Time Projection Chamber were used to identify heavy particles passing through the detector. No evidence for the production of such particles has been found, therefore exclusion limits at 95% confidence level were derived on the masses of left and right handed smuons and staus. The results were combined with previous DELPHI searches in this channel. Including previous DELPHI results, masses of left (right) handed stable smuons and staus can be excluded between 2 GeV/c^2 and 88 (87.5) GeV/c^2 at 95% CL.
Published: 2000

11. Search for charginos in e+e− interactions at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, O. Tchikilev, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Chargino, 010308 nuclear & particles physics, 0103 physical sciences, Neutralino, Gravitino, 010306 general physics, 01 natural sciences, Resonance (particle physics), Energy (signal processing)
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.
Published: 2000

12. Measurement of the branching fraction

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, 01 natural sciences, Crystallography, Pion, 0103 physical sciences, Pi, High Energy Physics::Experiment, B meson, Impact parameter, Neutrino, 010306 general physics, Lepton
Abstract: A study of b semileptonic decays into D, D pi+- and D* pi+- 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 -> D^0 \ell^- \bar{\nu}_{\ell} X) = (7.04 +/- 0.34 (stat) +/- 0.36 (syst.exp) +/- 0.17 (BR_D))% BR(b -> D^+ \ell^- \bar{\nu}_{\ell} X) = (2.72 +/- 0.19 (stat) +/- 0.16 (syst.exp) +/- 0.18 (BR_D))% BR(b -> D^{*+} \ell^- \bar{\nu}_{\ell} X) = (2.75 +/- 0.17 (stat) +/- 0.13 (syst.exp) +/- 0.09 (BR_D))% where the D0 and D+ results include also contributions from D*0 and D*+ decays. A fit to the distribution of the pi+- impact parameter to the primary interaction vertex provides a measurement of the b semileptonic branching fractions into the D0 pi+- X, D+ pi+- X and D*+ pi+- X final states. Assuming that single pion decay modes of B mesons dominate, the partial rates for \bar{B} -> D \pi \ell^- \bar{\nu_{\ell}} and \bar{B} -> D^{*} \pi \ell^- \bar{\nu_{\ell}} have been obtained, corresponding to a total branching fraction: BR(\bar{B} -> D \pi \ell^- \bar{\nu_{\ell}}) + BR(\bar{B} -> D^{*} \pi \ell^- \bar{\nu_{\ell}}) = (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 \bar{B} -> D \ell^- \bar{\nu_{\ell}} and D^* \ell^- \bar{\nu_{\ell}} branching fractions.
Published: 2000

13. Measurement of the rate of events in hadronic Z decays and the extraction of the gluon splitting into

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, H-J. Grimm, P. Gris, G. Grosdidier, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, J. Krstic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Normand, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph. Schwemling, B. Schwering, U. Schwickerath, M.A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, R. Sekulin, R.C. Shellard, A. Sheridan, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stanic, K. Stevenson, A. Stocchi, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, O. Tchikilev, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Van Remortel, I. Van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, C. Vollmer, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Jet (particle physics), 01 natural sciences, Bottom quark, Gluon, 0103 physical sciences, Invariant mass, Production (computer science), Atomic physics, 010306 general physics, Bar (unit)
Abstract: The rate $Z \rightarrow b\overline{b}b\overline{b}$ was measured using about $2 x 10^6$ hadronic decays collected by the DELPHI experiment in 1994 and 1995. Events were forced into 3-jets with $y_{min} 0.06$ and a b-tag was required for every jet. The rate was measured to be: $R_{4b} = BR(Z \to b\overline{b}b\overline{b}) / BR(Z \to hadrons) = (6.0 +- 1.9(stat) +- 1.4(syst.)) x 10^{-4}$ where the invariant mass of every $b\overline{b}$ system is above twice the b quark mass. Using the value of $R_{4b}$ the probability of secondary production of a $b\overline{b}$ pair from a gluon per hadronic $Z$ decay, $g_{bb}$, was extracted and found to be: $g_{bb} = (3.3+-1.0(stat.) +- 0.8(syst.)) x 10^{-3}$.
Published: 1999

14. Search for Leptoquarks and FCNC in e+e− annihilations at GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, T. Aldeweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, G. Damgaard, M. Davenport, W. Da Silva, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Fenyuk, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, S. Fichet, A. Firestone, P.-A. Fischer, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, H-J. Grimm, P. Gris, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, E. Kriznic, J. Krstic, Z. Krumstein, P. Kubinec, W. Kucewicz, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, J. Mazik, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nikolenko, V. Nomokonov, A. Normand, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph. Schwemling, U. Schwickerath, M.A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, R. Sekulin, R.C. Shellard, A. Sheridan, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, F. Tegenfeldt, F. Terranova, J. Thomas, A. Tilquin, J. Timmermans, N. Tinti, L.G. Tkatchev, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, I. Van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, C. Vollmer, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, G.C. Zucchelli, and G. Zumerle
Subjects: Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Flavour, Scalar (mathematics), Charge (physics), Jet (particle physics), 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, Leptoquark, 010306 general physics, Lepton
Abstract: A search for events with one jet and at most one isolated lepton used data taken at LEP-2 by the DELPHI detector.These data were accumulated at a center-of-mass energy of 183 GeV and correspond to an integrated luminosity of 47.7 1/pb. Production of single scalar and vector leptoquarks was searched for. Limits at 95% confidence level were derived on the masses (ranging from $134 GeV/c^2$ to $171 GeV/c^2$ for electromagnetic type couplings) and couplings of the leptoquark states.A search for top-charm flavour changing neutral currents($e^+ e^- \to \bar t c$ or charge conjugate) used the semileptonic decay channel. A limit on the flavour changing cross-section via neutral currents was set at 0.55pb (95% confidence level).
Published: 1999

15. Measurement of the e+e−→γγ(γ) cross section at the LEP energies

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, P. Andersson, A. Andreazza, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, O. Barring, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, Ch. Cerruti, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, P. Collins, M. Colomer, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, B. Dalmagne, G. Damgaard, M. Davenport, W. Da Silva, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, A. Djannati, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, A. Duperrin, J-D. Durand, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Fenyuk, P. Ferrari, A. Ferrer, S. Fichet, A. Firestone, P.-A. Fischer, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, S. Heising, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, D. Knoblauch, P. Kokkinias, A. Konopliannikov, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, J. Krstic, Z. Krumstein, P. Kubinec, W. Kucewicz, K. Kurvinen, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, K. Muenich, M. Mulders, C. Mulet-Marquis, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, M. Nikolenko, A. Normand, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, M. Pegoraro, L. Peralta, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, D. Rakoczy, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph. Schwemling, U. Schwickerath, M.A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, R. Sekulin, R.C. Shellard, A. Sheridan, R. Silvestre, L. Simard, F. Simonetto, A.N. Sisakian, T.B. Skaali, G. Smadja, O. Smirnova, G.R. Smith, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, F. Tegenfeldt, F. Terranova, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, G.W. Van Apeldoorn, P. Van Dam, J. Van Eldik, A. Van Lysebetten, I. Van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, T. Wlodek, G. Wolf, J. Yi, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Upper and lower bounds, Lower limit, Gamma gamma, Nuclear physics, Excited state, 0103 physical sciences, Cutoff, 010306 general physics
Abstract: The total and the differential cross sections for the reaction e+e− → γγ(γ) have been measured with the DELPHI detector at LEP using an integrated luminosity of 36.9 pb−1. The results agree with the QED predictions and consequently there is no evidence for non-standard channels with the same experimental signature. The lower limits obtained on the QED cutoff parameters are Λ+ > 143 GeV and Λ− > 120 GeV, and the lower bound on the mass of an excited electron with an effective coupling constant λγ = 1 is 132 GeV/c2. Upper limits on the branching ratios for the decays Z0 → γγ, Z0 → π0γ, Z0 → ηγ and Z0 → γγγ have been determined to be 5.5 × 10−5, 5.5 × 10−5, 8.0 × 10−5, and 1.7 × 10−5 respectively. All the limits are at the 95% confidence level.
Published: 1998

16. Search for Bs0- oscillations

Author: W Adam, T Adye, I Ajinenko, G.D Alekseev, R Alemany, P.P Allport, S Almehed, U Amaldi, S Amato, P Andersson, A Andreazza, P Antilogus, W-D Apel, Y Arnoud, B Åsman, J-E Augustin, A Augustinus, P Baillon, P Bambade, F Barao, M Barbi, D.Y Bardin, G Barker, A Baroncelli, O Barring, M.J Bates, M Battaglia, M Baubillier, J Baudot, K-H Becks, M Begalli, P Beilliere, Yu Belokopytov, K Belous, A.C Benvenuti, C Berat, M Berggren, D Bertini, D Bertrand, M Besancon, F Bianchi, M Bigi, M.S Bilenky, P Billoir, M-A Bizouard, D Bloch, M Blume, M Bonesini, W Bonivento, M Boonekamp, P.S.L Booth, A.W Borgland, G Borisov, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, T.J.V Bowcock, I Bozovic, M Bozzo, P Branchini, K.D Brand, T Brenke, R.A Brenner, R.C.A Brown, P Bruckman, J-M Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, S Cabrera, M Caccia, M Calvi, A.J.Camacho Rozas, T Camporesi, V Canale, M Canepa, F Carena, L Carroll, C Caso, M.V.Castillo Gimenez, A Cattai, F.R Cavallo, V Chabaud, M Chapkin, Ph Charpentier, L Chaussard, P Checchia, G.A Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, J Chudoba, V Cindro, P Collins, M Colomer, R Contri, E Cortina, G Cosme, F Cossutti, J-H Cowell, H.B Crawley, D Crennell, G Crosetti, J.Cuevas Maestro, S Czellar, J Dahm, B Dalmagne, G Damgaard, P.D Dauncey, M Davenport, W Da Silva, A Deghorain, G.Della Ricca, P Delpierre, N Demaria, A De Angelis, W De Boer, S De Brabandere, C De Clercq, C De La Vaissiere, B De Lotto, A De Min, L De Paula, H Dijkstra, L Di Ciaccio, A Di Diodato, A Djannati, J Dolbeau, K Doroba, M Dracos, J Drees, K.-A Drees, M Dris, J-D Durand, D Edsall, R Ehret, G Eigen, T Ekelof, G Ekspong, M Elsing, J-P Engel, B Erzen, M.Espirito Santo, E Falk, G Fanourakis, D Fassouliotis, M Feindt, P Ferrari, A Ferrer, S Fichet, T.A Filippas, A Firestone, P.-A Fischer, H Foeth, E Fokitis, F Fontanelli, F Formenti, B Franek, A.G Frodesen, R Fruhwirth, F Fulda-Quenzer, J Fuster, A Galloni, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, U Gasparini, Ph Gavillet, E.N Gazis, D Gele, J-P Gerber, L Gerdyukov, R Gokieli, B Golob, P Goncalves, G Gopal, L Gorn, M Gorski, Yu Gouz, V Gracco, E Graziani, C Green, A Grefrath, P Gris, G Grosdidier, K Grzelak, M Gunther, J Guy, F Hahn, S Hahn, Z Hajduk, A Hallgren, K Hamacher, F.J Harris, V Hedberg, R Henriques, J.J Hernandez, P Herquet, H Herr, T.L Hessing, J.-M Heuser, E Higon, S-O Holmgren, P.J Holt, D Holthuizen, S Hoorelbeke, M Houlden, J Hrubec, K Huet, K Hultqvist, J.N Jackson, R Jacobsson, P Jalocha, R Janik, Ch Jarlskog, G Jarlskog, P Jarry, B Jean-Marie, E.K Johansson, L Jonsson, P Jonsson, C Joram, P Juillot, M Kaiser, F Kapusta, K Karafasoulis, E Karvelas, S Katsanevas, E.C Katsoufis, R Keranen, Yu Khokhlov, B.A Khomenko, N.N Khovanski, B King, N.J Kjaer, O Klapp, H Klein, P Kluit, D Knoblauch, B Koene, P Kokkinias, M Koratzinos, K Korcyl, V Kostioukhine, C Kourkoumelis, O Kouznetsov, M Krammer, C Kreuter, I Kronkvist, Z Krumstein, W Krupinski, P Kubinec, W Kucewicz, K Kurvinen, C Lacasta, I Laktineh, J.W Lamsa, L Lanceri, D.W Lane, P Langefeld, J-P Laugier, R Lauhakangas, G Leder, F Ledroit, V Lefebure, C.K Legan, A Leisos, R Leitner, J Lemonne, G Lenzen, V Lepeltier, T Lesiak, M Lethuillier, J Libby, D Liko, A Lipniacka, I Lippi, B Loerstad, J.G Loken, J.M Lopez, D Loukas, P Lutz, L Lyons, J MacNaughton, G Maehlum, J.R Mahon, A Maio, T.G.M Malmgren, V Malychev, F Mandl, J Marco, R Marco, B Marechal, M Margoni, J-C Marin, C Mariotti, A Markou, C Martinez-Rivero, F Martinez-Vidal, S Marti i Garcia, J Masik, F Matorras, C Matteuzzi, G Matthiae, M Mazzucato, M Mc Cubbin, R Mc Kay, R Mc Nulty, G Mc Pherson, J Medbo, M Merk, C Meroni, S Meyer, W.T Meyer, M Michelotto, E Migliore, L Mirabito, W.A Mitaroff, U Mjoernmark, T Moa, R Moeller, K Moenig, M.R Monge, P Morettini, H Mueller, K Muenich, M Mulders, L.M Mundim, W.J Murray, B Muryn, G Myatt, T Myklebust, F Naraghi, F.L Navarria, S Navas, K Nawrocki, P Negri, S Nemecek, W Neumann, N Neumeister, R Nicolaidou, B.S Nielsen, M Nieuwenhuizen, V Nikolaenko, M Nikolenko, P Niss, A Nomerotski, A Normand, A Nygren, W Oberschulte-Beckmann, V Obraztsov, A.G Olshevski, A Onofre, R Orava, G Orazi, S Ortuno, K Osterberg, A Ouraou, P Paganini, M Paganoni, S Paiano, R Pain, H Palka, Th.D Papadopoulou, K Papageorgiou, L Pape, C Parkes, F Parodi, U Parzefall, A Passeri, M Pegoraro, L Peralta, H Pernegger, M Pernicka, A Perrotta, C Petridou, A Petrolini, H.T Phillips, G Piana, F Pierre, M Pimenta, E Piotto, T Podobnik, O Podobrin, M.E Pol, G Polok, P Poropat, V Pozdniakov, P Privitera, N Pukhaeva, A Pullia, D Radojicic, S Ragazzi, H Rahmani, P.N Ratoff, A.L Read, M Reale, P Rebecchi, N.G Redaelli, M Regler, D Reid, R Reinhardt, P.B Renton, L.K Resvanis, F Richard, J Ridky, G Rinaudo, O Rohne, A Romero, P Ronchese, L Roos, E.I Rosenberg, P Rosinsky, P Roudeau, T Rovelli, W Ruckstuhl, V Ruhlmann-Kleider, A Ruiz, K Rybicki, H Saarikko, Y Sacquin, A Sadovsky, G Sajot, J Salt, M Sannino, H Schneider, U Schwickerath, M.A.E Schyns, G Sciolla, F Scuri, P Seager, Y Sedykh, A.M Segar, A Seitz, R Sekulin, L Serbelloni, R.C Shellard, A Sheridan, I Siccama, P Siegrist, R Silvestre, F Simonetto, A.N Sisakian, T.B Skaali, G Smadja, N Smirnov, O Smirnova, G.R Smith, O Solovianov, R Sosnowski, D Souza-Santos, T Spassov, E Spiriti, P Sponholz, S Squarcia, D Stampfer, C Stanescu, S Stanic, S Stapnes, I Stavitski, K Stevenson, A Stocchi, J Strauss, R Strub, B Stugu, M Szczekowski, M Szeptycka, T Tabarelli, J.P Tavernet, O Tchikilev, F Tegenfeldt, F Terranova, J Thomas, A Tilquin, J Timmermans, L.G Tkatchev, T Todorov, S Todorova, D.Z Toet, A Tomaradze, B Tome, A Tonazzo, L Tortora, G Transtromer, D Treille, G Tristram, A Trombini, C Troncon, A Tsirou, M-L Turluer, I.A Tyapkin, M Tyndel, S Tzamarias, B Ueberschaer, O Ullaland, V Uvarov, G Valenti, E Vallazza, G.W Van Apeldoorn, P Van Dam, J Van Eldik, A Van Lysebetten, N Vassilopoulos, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, L.S Vertogradov, D Vilanova, P Vincent, L Vitale, E Vlasov, A.S Vodopyanov, V Vrba, H Wahlen, C Walck, F Waldner, C Weiser, A.M Wetherell, D Wicke, J.H Wickens, M Wielers, G.R Wilkinson, W.S.C Williams, M Winter, M Witek, T Wlodek, J Yi, K Yip, O Yushchenko, F Zach, A Zaitsev, A Zalewska, P Zalewski, D Zavrtanik, E Zevgolatakos, N.I Zimin, G.C Zucchelli, and G Zumerle
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Bar (music), Large Electron–Positron Collider
Published: 1997

17. Search for stable heavy charged particles in e+e− collisions at , 161 and 172 GeV

Author: P. Abreu, W. Adam, T. Adye, I. Ajinenko, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, M. Barbi, G. Barbiellini, D.Y. Bardin, G. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, M-A. Bizouard, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, F. Djama, A. Djannati, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, L. Gerdyukov, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, A. Klovning, P. Kluit, P. Kokkinias, A. Konopliannikov, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, J.R. Mahon, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, M. Novak, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, T. Podobnik, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, P. Siegrist, R. Silvestre, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, O. Solovianov, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, I. Stavitski, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, E. Tcherniaev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, T. Wlodek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Time projection chamber, 010308 nuclear & particles physics, Electron–positron annihilation, Supersymmetry, 7. Clean energy, 01 natural sciences, Particle identification, Charged particle, Ring-imaging Cherenkov detector, Standard Model, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: A search for stable or long-lived heavy charged particles in e+e− interactions at energies of 130–136, 161 and 172 GeV has been performed using the data taken by the DELPHI experiment at LEP. The search is based on particle identification provided by the Time Projection Chamber and the Ring Imaging Cherenkov detector. Upper limits at 95% confidence level are derived on the cross-section for heavy long-lived pair-produced charge ±e and View the MathML source particles in the range of 0.4–2.3 pb for masses from 45 to 84 GeV/c2. Within supersymmetric extensions of the Standard Model, long-lived charginos with masses from 45 to 84 (80) GeV/c2 for high (low) sneutrino masses can be excluded at 95% confidence level. Left-handed (right-handed) long-lived or stable smuons and staus with masses between 45 and 68 (65) GeV/c2 can be excluded at 95% confidence level.
Published: 1997

18. Search for excited leptons in e+e− collisions at

Author: P. Abreu, W. Adam, T. Adye, I. Ajinenko, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, G. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, M-A. Bizouard, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, J. Chodoba, V. Chorowicz, V. Cindro, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dann, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, F. Djama, A. Djannati, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, L. Gerdyukov, R. Gokieli, B. Golob, C. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, A. Klovning, P. Kluit, P. Kokkinias, A. Konopliannikov, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, J.R. Mahon, A. Maio, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, K. Muenich, M. Mulders, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, T. Podobnik, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, P. Siegrist, R. Silvestre, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, I. Stavitski, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, T. Wlodek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Coupling, Nuclear and High Energy Physics, Particle physics, Missing energy, Luminosity (scattering theory), Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Electron, HERA, 01 natural sciences, 7. Clean energy, Luminosity, Nuclear physics, Pair production, Excited state, 0103 physical sciences, Computer Science::Mathematical Software, High Energy Physics::Experiment, Neutrino, 010306 general physics, Boson, Lepton
Abstract: We have searched for excited states of charged and neutral leptons, e∗, μ ∗ , τ ∗ and ν ∗ , in e+e− collisions at s =130 using the OPAL detector at LEP. No evidence for their existence was found. With the most common coupling assumptions, the final states from excited lepton pair production include l+l−γγ and l+l−WW (with the subsequent decay of the virtual W bosons). From the analysis of these final states, 95% confidence level lower mass limits of 66.5 GeV for e∗, 66.8 GeV for μ ∗ , 65.3 GeV for τ ∗ , 66.2 GeV for ν e ∗ , 66.5 GeV for ν μ ∗ and 64.7 GeV for ν τ ∗ are inferred. From the analysis of γγ final states with missing energy and using alternative coupling assignments which permit photonic ν ∗ decays, a 95% confidence level lower mass limit of 65.0 GeV for each ν ∗ flavour is inferred. From the analysis of the l+l−γ, acoplanar lepton pair, and single γ final states expected from excited lepton single production, upper limits on f Λ (ratio of the coupling to the compositeness scale) are determined for excited lepton masses up to the kinematic limit.
Published: 1997

19. Search for neutralinos, scalar leptons and scalar quarks in e+e− interactions at

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, P. Andersson, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, A. Di Diodato, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, C. Green, A. Grefrath, P. Gris, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, O. Klapp, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, J.R. Mahon, A. Maio, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, A. Miagkov, M. Michelotto, E. Migliore, L. Mirabito, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, I. Siccama, P. Siegrist, R. Silvestre, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, K. Stevenson, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, E. Tcherniaev, O. Tchikilev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear physics, Quark, Nuclear and High Energy Physics, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, High Energy Physics::Phenomenology, Scalar (physics), High Energy Physics::Experiment, Supersymmetry, Lepton
Abstract: Using data accumulated by DELPHI during the November 1995 LEP run at 130–136 GeV, searchs have been made for events with jets or leptons in conjunction with missing momentum. The results are interpreted in terms of limits on the production of neutralinos, scalar leptons, and scalar quarks.
Published: 1996

20. Search for the lightest chargino at GeV

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, M. Gibbs, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, A. Maio, T.G.M. Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, M. Novak, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, R. Pain, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, K. Stevenson, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, E. Tcherniaev, O. Tchikilev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Missing energy, Pair production, Chargino, Electron–positron annihilation, Root (chord), Supersymmetry, Minimal Supersymmetric Standard Model, Standard Model
Abstract: A search for pair production of the lightest chargino at root-s = 130.4 and 136.3 GeV has been carried out using the data sample corresponding to the 5.92 pb(-1) recorded by the DELPHI detector dur ...
Published: 1996

21. Search for anomalous production of single photons at and 136 GeV

Author: W Adam, T Adye, E Agasi, I Ajinenko, R Aleksan, G.D Alekseev, R Alemany, P.P Allport, S Almehed, U Amaldi, S Amato, A Andreazza, M.L Andrieux, P Antilogus, W-D Apel, Y Arnoud, B Åsman, J-E Augustin, A Augustinus, P Baillon, P Bambade, F Barao, R Barate, M Barbi, G Barbiellini, D.Y Bardin, A Baroncelli, O Barring, J.A Barrio, W Bartl, M.J Bates, M Battaglia, M Baubillier, J Baudot, K-H Becks, M Begalli, P Beilliere, Yu Belokopytov, K Belous, A.C Benvenuti, M Berggren, D Bertini, D Bertrand, F Bianchi, M Bigi, M.S Bilenky, P Billoir, D Bloch, M Blume, T Bolognese, M Bonesini, W Bonivento, P.S.L Booth, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, T.J.V Bowcock, M Bozzo, P Branchini, K.D Brand, T Brenke, R.A Brenner, C Bricman, R.C.A Brown, P Bruckman, J-M Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, A Buys, S Cabrera, M Caccia, M Calvi, A.J Camacho Rozas, T Camporesi, V Canale, M Canepa, K Cankocak, F Cao, F Carena, L Carroll, C Caso, M.V Castillo Gimenez, A Cattai, F.R Cavallo, V Chabaud, Ph Charpentier, L Chaussard, J Chauveau, P Checchia, G.A Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, V Cindro, P Collins, J.L Contreras, R Contri, E Cortina, G Cosme, F Cossutti, H.B Crawley, D Crennell, G Crosetti, J Cuevas Maestro, S Czellar, E Dahl-Jensen, J Dahm, B Dalmagne, M Dam, G Damgaard, P.D Dauncey, M Davenport, W Da Silva, C Defoix, A Deghorain, G Della Ricca, P Delpierre, N Demaria, A De Angelis, W De Boer, S De Brabandere, C De Clercq, C De La Vaissiere, B De Lotto, A De Min, L De Paula, C De Saint-Jean, H Dijkstra, L Di Ciaccio, F Djama, J Dolbeau, M Donszelmann, K Doroba, M Dracos, J Drees, K.-A Drees, M Dris, J-D Durand, D Edsall, R Ehret, G Eigen, T Ekelof, G Ekspong, M Elsing, J-P Engel, B Erzen, M Espirito Santo, E Falk, D Fassouliotis, M Feindt, A Fenyuk, A Ferrer, S Fichet, T.A Filippas, A Firestone, P.-A Fischer, H Foeth, E Fokitis, F Fontanelli, F Formenti, B Franek, P Frenkiel, D.C Fries, A.G Frodesen, R Fruhwirth, F Fulda-Quenzer, J Fuster, A Galloni, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, U Gasparini, Ph Gavillet, E.N Gazis, D Gele, J-P Gerber, M Gibbs, R Gokieli, B Golob, G Gopal, L Gorn, M Gorski, Yu Gouz, V Gracco, E Graziani, G Grosdidier, K Grzelak, S Gumenyuk, P Gunnarsson, M Gunther, J Guy, F Hahn, S Hahn, Z Hajduk, A Hallgren, K Hamacher, W Hao, F.J Harris, V Hedberg, R Henriques, J.J Hernandez, P Herquet, H Herr, T.L Hessing, E Higon, H.J Hilke, T.S Hill, S-O Holmgren, P.J Holt, D Holthuizen, S Hoorelbeke, M Houlden, J Hrubec, K Huet, K Hultqvist, J.N Jackson, R Jacobsson, P Jalocha, R Janik, Ch Jarlskog, G Jarlskog, P Jarry, B Jean-Marie, E.K Johansson, L Jonsson, P Jonsson, C Joram, P Juillot, M Kaiser, F Kapusta, K Karafasoulis, M Karlsson, E Karvelas, S Katsanevas, E.C Katsoufis, R Keranen, Yu Khokhlov, B.A Khomenko, N.N Khovanski, B King, N.J Kjaer, H Klein, A Klovning, P Kluit, B Koene, P Kokkinias, M Koratzinos, K Korcyl, V Kostioukhine, C Kourkoumelis, O Kouznetsov, P.-H Kramer, M Krammer, C Kreuter, I Kronkvist, Z Krumstein, W Krupinski, P Kubinec, W Kucewicz, K Kurvinen, C Lacasta, I Laktineh, S Lamblot, J.W Lamsa, L Lanceri, D.W Lane, P Langefeld, V Lapin, I Last, J-P Laugier, R Lauhakangas, G Leder, F Ledroit, V Lefebure, C.K Legan, R Leitner, Y Lemoigne, J Lemonne, G Lenzen, V Lepeltier, T Lesiak, J Libby, D Liko, R Lindner, A Lipniacka, I Lippi, B Loerstad, J.G Loken, J.M Lopez, D Loukas, P Lutz, L Lyons, J MacNaughton, G Maehlum, A Maio, V Malychev, J Marco, R Marco, B Marechal, M Margoni, J-C Marin, C Mariotti, A Markou, T Maron, C Martinez-Rivero, F Martinez-Vidal, S Marti i Garcia, F Matorras, C Matteuzzi, G Matthiae, M Mazzucato, M Mc Cubbin, R Mc Kay, R Mc Nulty, J Medbo, M Merk, C Meroni, S Meyer, W.T Meyer, A Miagkov, M Michelotto, E Migliore, L Mirabito, W.A Mitaroff, U Mjoernmark, T Moa, R Moeller, K Moenig, M.R Monge, P Morettini, H Mueller, L.M Mundim, W.J Murray, B Muryn, G Myatt, F Naraghi, F.L Navarria, S Navas, K Nawrocki, P Negri, S Nemecek, W Neumann, N Neumeister, R Nicolaidou, B.S Nielsen, M Nieuwenhuizen, V Nikolaenko, P Niss, A Nomerotski, A Normand, M Novak, W Oberschulte-Beckmann, V Obraztsov, A.G Olshevski, A Onofre, R Orava, K Osterberg, A Ouraou, P Paganini, M Paganoni, P Pages, H Palka, Th.D Papadopoulou, K Papageorgiou, L Pape, C Parkes, F Parodi, A Passeri, M Pegoraro, L Peralta, H Pernegger, M Pernicka, A Perrotta, C Petridou, A Petrolini, M Petrovyck, H.T Phillips, G Piana, F Pierre, M Pimenta, M Pindo, S Plaszczynski, O Podobrin, M.E Pol, G Polok, P Poropat, V Pozdniakov, M Prest, P Privitera, N Pukhaeva, A Pullia, D Radojicic, S Ragazzi, H Rahmani, J Rames, P.N Ratoff, A.L Read, M Reale, P Rebecchi, N.G Redaelli, M Regler, D Reid, P.B Renton, L.K Resvanis, F Richard, J Richardson, J Ridky, G Rinaudo, I Ripp, A Romero, I Roncagliolo, P Ronchese, L Roos, E.I Rosenberg, E Rosso, P Roudeau, T Rovelli, W Ruckstuhl, V Ruhlmann-Kleider, A Ruiz, K Rybicki, H Saarikko, Y Sacquin, A Sadovsky, O Sahr, G Sajot, J Salt, J Sanchez, M Sannino, M Schimmelpfennig, H Schneider, U Schwickerath, M.A.E Schyns, G Sciolla, F Scuri, P Seager, Y Sedykh, A.M Segar, A Seitz, R Sekulin, L Serbelloni, R.C Shellard, I Siccama, P Siegrist, S Simonetti, F Simonetto, A.N Sisakian, B Sitar, T.B Skaali, G Smadja, N Smirnov, O Smirnova, G.R Smith, R Sosnowski, D Souza-Santos, T Spassov, E Spiriti, P Sponholz, S Squarcia, C Stanescu, S Stapnes, I Stavitski, K Stevenson, F Stichelbaut, A Stocchi, J Strauss, R Strub, B Stugu, M Szczekowski, M Szeptycka, T Tabarelli, J.P Tavernet, O Tchikilev, J Thomas, A Tilquin, J Timmermans, L.G Tkatchev, T Todorov, S Todorova, D.Z Toet, A Tomaradze, B Tome, A Tonazzo, L Tortora, G Transtromer, D Treille, W Trischuk, G Tristram, A Trombini, C Troncon, A Tsirou, M-L Turluer, I.A Tyapkin, M Tyndel, S Tzamarias, B Ueberschaer, O Ullaland, V Uvarov, G Valenti, E Vallazza, G.W Van Apeldoorn, P Van Dam, W.K Van Doninck, J Van Eldik, N Vassilopoulos, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, L.S Vertogradov, D Vilanova, P Vincent, L Vitale, E Vlasov, A.S Vodopyanov, V Vrba, H Wahlen, C Walck, M Weierstall, P Weilhammer, C Weiser, A.M Wetherell, D Wicke, J.H Wickens, M Wielers, G.R Wilkinson, W.S.C Williams, M Winter, M Witek, K Woschnagg, K Yip, O Yushchenko, F Zach, A Zaitsev, A Zalewska, P Zalewski, D Zavrtanik, E Zevgolatakos, N.I Zimin, M Zito, D Zontar, G.C Zucchelli, and G Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, Photon, Luminosity (scattering theory), 010308 nuclear & particles physics, Electron–positron annihilation, Detector, 01 natural sciences, Standard Model, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Neutrino, 010306 general physics
Abstract: This letter reports the results of the measurement of single photon production in the reaction e+e− → γ+ invisible particles at centre-of-mass energies View the MathML source and 136 GeV and an integrated luminosity of 5.83 pb−1, collected with the DELPHI detector at LEP. The signal is compatible with the prediction of the Standard Model for the process View the MathML source, and the number of neutrino families has been determined to be Nν = 3.1 ± 0.6. Limits have been derived on anomalous neutral gauge boson couplings and on compositeness in the framework of a specific model.
Published: 1996

22. Study of radiative leptonic events with hard photons and search for excited charged leptons at GeV

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, G. Barbiellini, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, A.C. Benvenuti, M. Berggren, D. Bertini, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, J. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, J-D. Durand, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, S. Fichet, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, M. Gibbs, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, S. Lamblot, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J. Libby, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, A. Maio, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, A. Miagkov, M. Michelotto, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, M. Novak, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, M. Pindo, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, O. Sahr, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, L. Serbelloni, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, A. Sokolov, R. Sosnowski, D. Souza-Santos, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, K. Stevenson, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, O. Tchikilev, J. Thomas, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, S. Todorova, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, HERA, 01 natural sciences, 7. Clean energy, Standard Model, Nuclear physics, Excited state, 0103 physical sciences, Large Electron–Positron Collider, Radiative transfer, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: During the last 1995 data acquisition period at LEP, the DELPHI experiment collected an integrated luminosity of 5.9 pb−1 at centre-of-mass energies of 130 GeV and 136 GeV. Radiative leptonic events (e, μ, τ) with high energy photons were studied and compared to Standard Model predictions. The data were used to search for charged excited leptons decaying through an electromagnetic transition. No significant signal was found. From the search for pair produced excited leptons, the limits View the MathML source, View the MathML source and View the MathML source at 95% confidence level were established. For single excited lepton production, upper limits on the ratio View the MathML source of the coupling of the excited charged lepton to its mass were derived.
Published: 1996

23. Charged particle multiplicity in e+e− interactions at

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, R. Alemany, P.P. Allport, S. Almehed, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, M. Barbi, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, D. Bloch, M. Blume, S. Blyth, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, S. Bosworth, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, T. Brenke, R.A. Brenner, C. Bricman, L. Brillault, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Bursgsmueller, P. Buschmann, A. Buys, S. Cabrera, M. Caccia, M. Calvi, A.J.Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, L. Carroll, C. Caso, M.V.Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, G. Crosetti, J.Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, A. Deghorain, G.Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, Y. Dufour, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, N. Ershaidat, B. Erzen, M.Espirito Santo, E. Falk, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, T.A. Filippas, A. Firestone, P.-A. Fischer, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, L. Gerdyukov, M. Gibbs, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, E. Graziani, G. Grosdidier, K. Grzelak, S. Gumenyuk, P. Gunnarsson, M. Gunther, J. Guy, F. Hahn, S. Hahn, Z. Hajduk, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Jonsson, C. Joram, P. Juillot, M. Kaiser, F. Kapusta, K. Karafasoulis, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, Yu. Khohklov, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, S. Lamblot, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, J.M. Lopez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, G. Maehlum, A. Maio, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M.Mc Cubbin, R.Mc Kay, R.Mc Nulty, J. Medbo, M. Merk, C. Meroni, S. Meyer, W.T. Meyer, M. Michelotto, E. Migliore, L. Mirabito, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nieuwenhuizen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, A. Passeri, M. Pegoraro, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, M. Petrovyck, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, M. Pindo, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, J. Sanchez, M. Sannino, M. Schimmelpfennig, H. Schneider, U. Schwickerath, M.A.E. Schyns, G. Sciolla, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, O. Solovianov, R. Sosnowski, D. Souza-Santos, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stapnes, I. Stavitski, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, O. Tchikilev, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C.Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Weierstall, P. Weilhammer, C. Weiser, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G.C. Zucchelli, and G. Zumerle
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, 01 natural sciences, Lower energy, Charged particle, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics
Abstract: From the data collected by DELPHI at LEP in autumn 1995, the multiplicity of charged particles at a hadronic energy of 130 GeV has been measured to be 〈nch〉 = 23.84 ± 0.51 (stat) ± 0.52 (syst). When compared to lower energy data, the value measured is consistent with the evolution predicted by QCD with corrections at next-to-leading order, for a value αs(130 GeV) = 0.105 ± 0.003 (stat) ± 0.008 (syst).
Published: 1996

24. Measurement of the mixing parameter in DELPHI

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, P.P. Allport, S. Almehed, F.M.L. Almeida, S.J. Alvsvaag, U. Amaldi, A. Andreazza, P. Antilogus, W.-D. Apel, R.J. Apsimon, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, P. Beilliere, P. Beltran, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, J. Bjarne, D. Bloch, J. Blocki, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, L. Brillault, R.C.A. Brown, J.-M. Brunet, L. Bugge, T. Buran, A. Buys, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, R. Campion, T. Camporesi, V. Canale, K. Cankocak, F. Cao, F. Carena, P. Carrilho, L. Carroll, R. Cases, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, Ph. Charpentier, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, J. Davies, W. Da Silva, C. Defoix, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, M.D.M. De Fez Laso, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, R. Ehret, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, N. Ershaidat, M. Espirito Santo, V. Falaleev, D. Fassouliotis, M. Feindt, A. Fenyuk, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, J-L. Fousset, S. Francon, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, P. Giacomelli, D. Gillespie, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, G. Gopal, L. Gorn, M. Gorski, V. Gracco, F. Grard, E. Graziani, G. Grosdidier, P. Gunnarsson, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G. Hamel De Monchenault, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, J.A. Hernando, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, P.F. Honore, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, P. Ioannou, P-S. Iversen, J.N. Jackson, R. Jacobsson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, M. Kaiser, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, W. Krupinski, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, P. Langefeld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J.M. Levy, E. Lieb, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maio, A. Maltezos, F. Mandl, J. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, S. Marti, C. Martinez-Rivero, F. Martinez-Vidal, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, C. Meroni, W.T. Meyer, M. Michelotto, E. Migliore, I. Mikulec, L. Mirabito, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, V. Nikolaenko, P.E.S. Nilsen, P. Niss, A. Nomerotski, A. Normand, M. Novak, V. Obraztsov, A.G. Olshevski, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, S. Schael, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, M. Sessa, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, A.N. Sisakian, G. Skjevling, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, I. Stavitski, G. Stavropoulos, K. Stepaniak, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, O. Tchikilev, G.E. Theodosiou, Z. Thome, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M. Turala, M-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, M. Van Der Heijden, W.K. Van Doninck, J. Van Eldik, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, G. Wormser, K. Woschnagg, K. Yip, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G. Zumerle, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Elementary particle, 01 natural sciences, b-tagging, Measure (mathematics), Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics, Mixing (physics), Lepton
Abstract: A total of about View the MathML source decays have been analyzed to measure the View the MathML source mixing probability. Two different b tagging techniques have been used: events with two leptons and events with one lepton and one Λ. From a combination of the two methods the average mixing parameter, χ, was determined to be (12.1±1.6(stat.)±0.4(syst.)±0.4(model)%.
Published: 1994

25. Measurement of the e+e− → γγ(γ) cross section at LEP energies

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, P.P. Allport, S. Almehed, F.M.L. Almeida, S.J. Alvsvaag, U. Amaldi, A. Andreazza, P. Antilogus, W-D. Apel, R.J. Apsimon, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, P. Beltran, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, J. Blocki, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, L. Brillault, R.C.A. Brown, J-M. Brunet, L. Bugge, T. Buran, A. Buys, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, R. Campion, T. Camporesi, V. Canale, K. Cankocak, F. Cao, F. Carena, P. Carrilho, L. Carroll, R. Cases, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, M. Chapkin, Ph. Charpentier, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, J. Davies, W. Da Silva, C. Defoix, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, M.D.M. De Fez Laso, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, L-O. Eek, R. Ehret, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, N. Ershaidat, M. Espirito Santo, V. Falaleev, D. Fassouliotis, M. Feindt, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, J-L. Fousset, S. Francon, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, J-P. Gerber, P. Giacomelli, D. Gillespie, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, G. Gopal, L. Gorn, M. Gorski, V. Gracco, F. Grard, E. Graziani, G. Grosdidier, B. Grossetete, P. Gunnarsson, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G.Hamel De Monchenault, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, J.A. Hernando, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, P.F. Honore, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, P. Ioannou, P-S. Iversen, J.N. Jackson, R. Jacobsson, P. Jalocha, G. Jarlskog, P. Larry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, M. Kaiser, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, A. Katargin, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, W. Krupinski, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, P. Langefeld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J.M. Levy, E. Lieb, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maio, A. Maltezos, F. Mandl, J. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, S. Marti, C. Martinez-Rivero, F. Martinez-Vidal, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, C. Meroni, W.T. Meyer, M. Michelotto, E. Migliore, I. Mikulec, L. Mirabito, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, P.E.S. Nilsen, P. Niss, A. Nomerotski, A. Normand, V. Obraztsov, A.G. Olshevski, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, A. Romero, I. Roncagliolo, P. Ronchese, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, S. Schael, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, M. Sessa, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetti, A.N. Sisakian, G. Skjevling, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, I. Stavitski, G. Stavropoulos, K. Stepaniak, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, O. Tchikilev, G.E. Theodosiou, Z. Thome, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, D. Treille, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M. Turala, M-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, M. Van Der Heijden, W.K. Van Doninck, J. Van Eldik, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, G. Wormser, K. Woschnagg, K. Yip, O. Yushchenko, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G. Zumerle, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Coupling constant, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Excited state, Cutoff, Upper and lower bounds
Abstract: The total and the differential cross sections for the reaction e+e− → γγ(γ) have been measured with the DELPHI detector at LEP using an integrated luminosity of 36.9 pb−1. The results agree with the QED predictions and consequently there is no evidence for non-standard channels with the same experimental signature. The lower limits obtained on the QED cutoff parameters are Λ+ > 143 GeV and Λ− > 120 GeV, and the lower bound on the mass of an excited electron with an effective coupling constant λγ = 1 is 132 GeV/c2. Upper limits on the branching ratios for the decays Z0 → γγ, Z0 → π0γ, Z0 → ηγ and Z0 → γγγ have been determined to be 5.5 × 10−5, 5.5 × 10−5, 8.0 × 10−5, and 1.7 × 10−5 respectively. All the limits are at the 95% confidence level.
Published: 1994

26. Production of Λ and Λ correlations in the hadronic decays of the Z0

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, R. Aleksan, G.D. Alekseev, A. Algeri, P. Allen, S. Almehed, S.J. Alvsvaag, U. Amaldi, A. Andreazza, P. Antilogus, W-D. Apel, R.J. Apsimon, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, P. Beltran, D. Benedic, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, J. Blocki, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, H. Borner, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, L. Brillault, R.C.A. Brown, P. Bruckman, J-M. Brunet, A. Budziak, L. Bugge, T. Buran, H. Burmeister, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, R. Campion, T. Camporesi, V. Canale, F. Cao, F. Carena, L. Carroll, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, B. Dalmagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, J. Davies, W. Da Silva, C. Defoix, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, M.D.M. De Fez Laso, C. De La Vaissiere, B. De Lotto, A. De Min, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, L-O. Eek, P.A.-M. Eerola, R. Ehret, T. Ekelof, G. Ekspong, A. Elliot Peisert, M. Elsing, J-P. Engel, N. Ershaidat, M. Espirito Santo, V. Falaleev, D. Fassouliotis, M. Feindt, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, K.A.J. Forbes, J-L. Fousset, S. Francon, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, J-P. Gerber, P. Giacomelli, D. Gillespie, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, G. Gopal, L. Gorn, M. Gorski, V. Gracco, A. Grant, F. Grard, E. Graziani, G. Grosdidier, E. Gross, B. Grossetete, S. Gumenyuk, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G.Hamel De Monchenault, W. Hao, F.J. Harris, V. Hedberg, T. Henkes, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, I. Hietanen, C.O. Higgins, E. Higon, H.J. Hilke, S.D. Hodgson, T. Hofmokl, S-O. Holmgren, P.J. Holt, D. Holthuizen, P.F. Honore, M. Houlden, J. Hrubec, K. Huet, P.O. Hulth, K. Hultqvist, P. Ioannou, P-S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, G. Kalkanis, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, U. Kruener-Marquis, W. Kucewicz, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J.M. Levy, E. Lieb, D. Liko, J. Lindgren, R. Lindner, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maio, A. Malteros, F. Mandl, J. Marco, M. Margoni, J-C. Marin, A. Markou, T. Maron, S. Marti, C. Martinez-Rivero, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, G. Meola, C. Meroni, W.T. Meyer, M. Michelotto, I. Mikulec, L. Mirabito, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, G. Myatt, F.L. Navarria, P. Negri, S. Nemecek, R. Nicolaidou, B.S. Nielsen, B. Nijjhar, V. Nikolaenko, P.E.S. Nilsen, P. Niss, A. Nomerotski, V. Obraztsov, A.G. Olshevski, R. Orava, A. Ostankov, K. Osterberg, A. Ouraou, M. Peganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, L. Peralta, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Paropat, V. Pozdniakov, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, I. Roncagliolo, P. Ronchese, C. Ronnqvist, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, S. Schael, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, M. Sessa, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, G. Skjevling, G. Smadja, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, O. Tchikilev, G.E. Theodosiou, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, O. Toker, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, D. Treille, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, M. Van Der Heijden, W.K. Van Doninck, J. Van Eldik, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, J.H. Wickens, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, M. Zanin, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G. Zumerle, J. Zuniga, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Hadronic decay, Nuclear and High Energy Physics, Particle physics, Cluster decay, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Elementary particle, 01 natural sciences, Nuclear physics, Baryon, Angular distribution, 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, 010306 general physics
Abstract: An analysis of the production of the Λ baryon in the hadronic decays of the Z0 is presented, based on about 993K multihadronic events collected by the DELPHI detector at LEP during 1991 and 1992. The differencial cross section of the Λ and the correlations between Λ and View the MathML source produced in the same event are compared to current models, based both on string fragmentation and on cluster decay. The predictions of the string fragmentation model are found to give satisfactory agreements with the data, clearly better than those of the cluster model.
Published: 1993

27. Search for the t and b' quarks in hadronic decays of the Z0 boson

Author: P. Abreu, W. Adam, F. Adami, T. Adye, G.D. Alekseev, J.V. Allaby, P. Allen, S. Almehed, F. Alted, S.J. Alvsvaag, U. Amaldi, E. Anassontzis, W.D. Apel, B. Asman, C. Astor Ferreres, J.E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, D.Yu. Bardin, A. Baroncelli, O. Barring, W. Bartl, M.J. Bates, B.V. Batyunia, M. Baubillier, K.H. Becks, C.J. Beeston, P. Beilliere, I. Belokopytov, P. Beltran, D. Benedic, J.M. Benlloch, M. Berggren, D. Bertrand, S. Biagi, F. Bianchi, J.H. Bibby, M.S. Bilenky, P. Billor, J. Bjarne, D. Bloch, P.N. Bogolubov, D. Bollini, T. Bolognese, M. Bonapart, Y.E. Bonyushkin, P.S.L. Booth, M. Boratav, P. Borgeaud, H. Borner, C. Bosio, O. Botner, B. Bouquet, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, C. Bricman, R.C.A. Brown, N. Brummer, J.M. Brunet, L. Bugge, T. Buran, H. Burmeister, C.M. Buttar, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, J.E. Campagne, A. Campion, T. Camporesi, V. Canale, F. Cao, L. Carroll, C. Caso, E. Castelli, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, P. Charpentier, P. Checchia, G.A. Chelkov, L. Chevalier, P.V. Chliapnikov, V. Chorowicz, R. Cirio, M.P. Clara, J.L. Contreras, R. Contri, G. Cosme, F. Couchot, H.B. Crawley, D. Crennel, M. Cresti, G. Crosetti, N. Crosland, M. Crozon, J. Cuevas Maestro, S. Czellar, S. Dagoret, E. Dahl-Jensen, B. D'Almagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, M. Davenport, P. David, A. De Angelis, M. De Beer, H. De Boeck, W. De Boer, C. De Clercq, M.D.M. De Fez Laso, N. De Groot, C. De La Vaissiere, B. De Lotto, C. Defoix, D. Delikaris, P. Delpierre, N. Demaria, L. Di Ciaccio, A.N. Diddens, H. Dijkstra, F. Djama, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, W. Dulinski, R. Dzhelyadin, D.N. Edwards, L.O. Eek, P.A.M. Eerola, G. Ekelop, G. Ekspong, J.P. Engel, V. Falaleev, A. Fenyuk, M. Fernandez Alonso, A. Ferrer, S. Ferroni, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, H. Forsbach, B. Franek, K.E. Fransson, P. Frenkiel, D.C. Fries, R. Fruhwirth, F. Fulda-Quenzer, H. Fuerstenau, J. Fuster, J.M. Gago, G. Galeazzi, D. Gamba, U. Gasparini, P. Gavillet, S. Gawne, E.N. Gazis, P. Giacomelli, K.W. Glitza, R. Gokieli, V.M. Golovatyuk, A. Goobar, G. Gopal, M. Gorski, Yu. Gouz, V. Gracco, A. Grant, F. Grard, E. Graziani, I.A. Gritsaenko, M.H. Gros, G. Grosdidier, B. Grossetete, S. Gumenyuk, J. Guy, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G. Hamel De Monchenault, J.F. Harris, B. Heck, I. Herbst, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, H.J. Hilke, T. Hofmokl, R. Holmes, S.O. Holmgren, J.E. Hooper, M. Houlden, J. Hrubec, P.O. Hulth, K. Hultqvist, D. Husson, B.D. Hyams, P. Ioannou, P.S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, R.B. Kadyrov, V.G. Kadyshevsky, G. Kalkanis, G. Kalmus, G. Kantardjian, F. Kapusta, P. Kapusta, S. Katsanevas, E.C. Katsoufis, R. Keranen, J. Kesteman, B.A. Khomenko, B. king, H. Klein, W. Klempt, A. Klovning, P. Kluit, J.H. Koehne, B. Koene, P. Kokkinias, M. Kopf, M. Koratzinos, K. Korcyl, A.V. Korytov, B. Korzen, M. Kostrikov, C. Kourkoumelis, T. Kreuzberger, J. Krolikowski, U. Kruener-Marquis, W. Krupinski, W. Kucewicz, K. Kurvinen, M.I. Laakso, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, J.P. Laugier, R. Lauhakangas, P. Laurikainen, G. Leder, F. Ledroit, J. Lemonne, G. Lenzen, V. Lepeltier, A. Letessier-Selvon, P.K. Lichtenwagner, E. Lieb, E. Lilestol, E. Lillethun, I. Lippi, R. Llosa, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez, M.A. Lopez Aguera, D. Loukas, J.J. Lozano, R. Lucock, B. Lund-Jensen, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maltezos, F. Mandl, J. Marco, J.C. Marin, A. Markou, L. Mathis, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, E. Menichetti, C. Meroni, W.T. Meyer, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, H. Muller, G. Myatt, F. Naraghi, U. Nau-Korzen, F.L. Navarria, P. Negri, B.S. Nielsen, M. Nigro, V. Nikolaenko, V. Obraztsov, R. Orava, A. Ouraou, R. Pain, K. Pakonski, H. Palka, T. Papadopoulou, L. Pape, P. Pasini, A. Passeri, M. Pegoraro, V. Perevozchikov, M. Pernicka, M. Pimenta, O. Pingot, C. Pinori, A. Pinsent, M.E. Pol, G. Polok, P. Poropat, P. Privitera, A. Pullia, J. Pyyhtia, A.A. Rademakers, D. Radojicic, S. Ragazzi, W.H. Range, P.N. Ratoff, A.L. Read, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, P. Ronchese, E. Rosenberg, U. Rossi, E. Rosso, P. Roudeau, T. Rovelli, V. Ruhlmann, A. Ruiz, H. Saarikko, D. Sacco, Y. Sacquin, A.B. Sadovsky, E. Sanchez, E. Sanchis, M. Sannino, M. Schaeffer, W. Schneider, F. Scuri, A. Sebastia, A.M. Segar, R. Sekulin, M. Sessa, G. Sette, R. Seufert, R.C. Shellard, P. Siegrist, S. Simonetti, F. Simonetto, T.B. Skaali, J. Skeens, G. Skjevling, G. Smadja, G.R. Smith, R. Sosnowski, K. Spang, T. Spassoff, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, C. Stubenrauch, M. Szczekowski, M. Szeptycka, P. Szymanski, S. Tavernier, G. Theodosiou, A. Tilquin, J. Timmermans, L.G. Tkatchev, D.Z. Toet, A.K. Topphol, L. Tortora, D. Treille, U. Trevisan, G. Tristram, C. Troncon, E.N. Tsyganov, M. Turala, R. Turchetta, M.L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, F. Udo, S. Ueberschaer, V.A. Uvarov, G. Valenti, E. Vallaza, J.A. Valls, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, N. Van Eijndhoven, C. Vander Velde, J. Varela, P. Vaz, G. Vegni, M.E. Veitch, E. Vela, J. Velasco, L. Ventura, W. Venus, F. Verbeure, L. Vibert, D. Vilanova, E.V. Vlasov, A.S. Vodopianov, M. Vollmer, G. Voulgaris, M. Voutilainen, H. Wahlen, C. Walck, F. Waldner, M. Wayne, P. Weilhammer, J. Werner, A.M. Wetherell, J.H. Wickens, J. Wikne, W.S.C. Williams, M. Winter, D. Wormald, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, E. Zevgolatakos, G. Zhang, N.I. Zimin, A.I. Zinchenko, R. Zitoun, R. Zukanovich Funchal, G. Zumerle, J. Zuniga, Heyd, Yvette, 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), 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), DELPHI, 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), Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Quark, Nuclear and High Energy Physics, Top quark, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Electron–positron annihilation, Hadron, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Collider, Charged current, Boson, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Physique des particules élémentaires, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: We present a search for the third generation up type quark t and a possible fourth down type quark b' in hadronic Z0 decays observed in DELPHI at the LEP collider. For any scenario with a decay through the charged current or into a charged Higgs with a mass at least 6 GeV/c2 below the t and 3 GeVc2 below the b' mass, we set a lower limit for the t quark mass at 44.0 GeV/c2 and for the b' mass at 44.5 GeV/c2. For specific scenarios the mass limits are slightly higher, e.g. for charged current decays the limits are 44.5 and 45.0 GeV/c2 respectively, where all limits are given at a 95% confidence level. © 1990., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 1990

28. Search for the sgoldstino at √s = 189 to 202 GeV

Author: W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E. Anashkin, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W.-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K.-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, M.S. Bilenky, M.-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, J. Croix, G. Crosetti, J. Cuevas Maestro, S. Czellar, J. D'Hondt, J. Dalmau, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, G. Eigen, T. Ekelof, M. Ellert, M. Elsing, J.-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, M. Feindt, J. Fernandez, A. Ferrer, E. Ferrer-Ribas, F. Ferro, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Halag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, S.-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, P. Kluit, P. Kokkinias, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, E. Merle, C. Meroni, W.T. Meyer, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, J. Montenegro, D. Moraes, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, L.M. Mundim, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, V. Poireau, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, A. Savoy-Navarro, C. Schwanda, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, G. Sette, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M.-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, G. Valenti, E. Vallazza, C. Vander Velde, P. Van Dam, W. Van den Boeck, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G. Zumerle, and M. Zupan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, 01 natural sciences, Partícules (Física nuclear), Gluon, Sgoldstino, 0103 physical sciences, High Energy Physics::Experiment, Física nuclear, Goldstino, 010306 general physics
Abstract: A search for the supersymmetric partner of the goldstino, the sgoldstino S, at LEP2 is presented. The production Sgamma 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.
Published: 2000

29. Hadronization properties of b quarks compared to light quarks in <tex>e^{+}e^{-}$</tex> → qq from 183 to 200 GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, K. Belous, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, M. Boonekamp, P.S.L. Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, M. Chapkin, Ph. Charpentier, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, M. Costa, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, M. Espirito Santo, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, T. Geralis, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, P. Gris, G. Grosdidier, K. Grzelak, J. Guy, C. Haag, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, F. Hauler, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, M. Huber, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, D. Jeans, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, L. Jungermann, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, G. Kernel, B.P. Kersevan, Yu. Khokhlov, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, W. Liebig, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, D. Moraes, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, K. Nawrocki, P. Negri, N. Neufeld, R. Nicolaidou, B.S. Nielsen, P. Niezurawski, M. Nikolenko, V. Nomokonov, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, A. Oyanguren, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, T. Pavel, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, J. Rehn, D. Reid, P. Reinertsen, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Ripp-Baudot, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, Ph. Schwemling, B. Schwering, U. Schwickerath, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, N. Seibert, R. Sekulin, R.C. Shellard, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, S. Squarcia, C. Stanescu, S. Stanic, M. Stanitzki, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, A. Taffard, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, M. Tobin, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, P. Tortosa, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, M-L. Turluer, I.A. Tyapkin, P. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, P. Van Dam, W. Van den Boeck, J. Van Eldik, A. Van Lysebetten, N. van Remortel, I. Van Vulpen, G. Vegni, L. Ventura, W. Venus, F. Verbeure, P. Verdier, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, A.J. Washbrook, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, A. Zintchenko, Ph. Zoller, G.C. Zucchelli, and G. Zumerle
Subjects: Quark, Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, Charged particle, Hadronization, 0103 physical sciences, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics
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 bbar events, _{bb}, and the difference delta_{bl} between _{bb} and the multiplicity, _{ll}, in generic light quark (u,d,s) events: delta_{bl}(183 GeV) = 4.55 +/- 1.31 (stat) +/- 0.73 (syst) delta_{bl}(189 GeV) = 4.43 +/- 0.85 (stat) +/- 0.61 (syst) delta_{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.
Published: 2000

30. Measurements of the trilinear gauge boson couplings WWV (V = $\gamma$ Z) in e$^+$e$^-$ collisions at 183 GeV

Author: P. Abreu, W. Adam, T. Adye, P. Adzic, I. Ajinenko, Z. Albrecht, T. Alderweireld, G.D. Alekseev, R. Alemany, T. Allmendinger, P.P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E.G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D.Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K-H. Becks, M. Begalli, A. Behrmann, P. Beilliere, Yu. Belokopytov, N.C. Benekos, A.C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, M. Bigi, M.S. Bilenky, M-A. Bizouard, D. Bloch, H.M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P.S.L. Booth, A.W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R.A. Brenner, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, B. Buschbeck, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, V. Chabaud, Ph. Charpentier, L. Chaussard, P. Checchia, G.A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J-H. Cowell, H.B. Crawley, D. Crennell, S. Crepe, G. Crosetti, J. Cuevas Maestro, S. Czellar, M. Davenport, W. Da Silva, A. Deghorain, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, W. De Boer, C. De Clercq, B. De Lotto, A. De Min, L. De Paula, H. Dijkstra, L. Di Ciaccio, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J-D. Durand, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J-P. Engel, B. Erzen, M. Espirito Santo, E. Falk, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, F. Ferro, S. Fichet, A. Firestone, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, L. Gerdyukov, N. Ghodbane, I. Gil, F. Glege, R. Gokieli, B. Golob, G. Gomez-Ceballos, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, M. Gorski, Yu. Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, H-J. Grimm, P. Gris, G. Grosdidier, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, J. Hansen, F.J. Harris, V. Hedberg, S. Heising, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, J.-M. Heuser, E. Higon, S-O. Holmgren, P.J. Holt, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, G.J. Hughes, K. Hultqvist, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, Ch. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.P. Kersevan, B.A. Khomenko, N.N. Khovanski, A. Kiiskinen, B. King, A. Kinvig, N.J. Kjaer, O. Klapp, H. Klein, P. Kluit, P. Kokkinias, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, E. Kriznic, J. Krstic, Z. Krumstein, P. Kubinec, J. Kurowska, K. Kurvinen, J.W. Lamsa, D.W. Lane, P. Langefeld, V. Lapin, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J.G. Loken, J.H. Lopes, J.M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J.R. Mahon, A. Maio, A. Malek, T.G.M. Malmgren, S. Maltezos, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, J. Masik, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, F. Mazzucato, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Mc Pherson, C. Meroni, W.T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, M. Moch, R. Moeller, K. Moenig, M.R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W.J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, M. Nassiakou, F.L. Navarria, S. Navas, K. Nawrocki, P. Negri, S. Nemecek, N. Neufeld, N. Neumeister, R. Nicolaidou, B.S. Nielsen, M. Nikolenko, V. Nomokonov, A. Normand, A. Nygren, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, Th.D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, M. Pegoraro, L. Peralta, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, P.N. Ratoff, A.L. Read, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E.I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, Ch. Royon, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph. Schwemling, B. Schwering, U. Schwickerath, M.A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A.M. Segar, R. Sekulin, R.C. Shellard, A. Sheridan, M. Siebel, L. Simard, F. Simonetto, A.N. Sisakian, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, C. Stanescu, S. Stanic, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, F. Tegenfeldt, F. Terranova, J. Thomas, J. Timmermans, N. Tinti, L.G. Tkatchev, S. Todorova, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, M. Trochimczuk, C. Troncon, A. Tsirou, M-L. Turluer, I.A. Tyapkin, S. Tzamarias, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, A. Van Lysebetten, N. Van Remortel, I. Van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A.S. Vodopyanov, C. Vollmer, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, C. Weiser, D. Wicke, J.H. Wickens, G.R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, G.C. Zucchelli, G. Zumerle, 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), 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 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 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), and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, 7. Clean energy, 01 natural sciences, Partícules (Física nuclear), Standard Model, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Event generator, DELPHI, Coupling, Physics, Gauge boson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Charge (physics), LARGE ELECTRON POSITRON COLLIDER, Dipole, PARTICLE PHYSICS, Quadrupole, Física nuclear, High Energy Physics::Experiment
Abstract: Measurements of the trilinear gauge boson couplings WWγ and WWZ are presented from data taken by DELPHI in 1997 at an energy of 183 GeV. From a study of the reactions e + e − → W + W − , e + e − → Weν and e + e − → ννγ , values are obtained for Δg 1 Z and Δκ γ , the differences of the WWZ charge coupling and of the WWγ dipole couplings from their Standard Model values, and for λ γ , the WWγ quadrupole coupling. The observations are consistent with the predictions of the Standard Model. (Elsevier)
Published: 1999

31. Inclusive measurements of the production in hadronic Z0 decays

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, P.P. Allport, S. Almehed, S.J. Alvsvaag, U. Amaldi, S. Amato, A. Andreazza, M.L. Andrieux, P. Antilogus, W-D. Apel, Y. Arnoud, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Baudot, K.-H. Becks, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, M. Blume, S. Blyth, V. Bocci, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, P. Branchini, K.D. Brand, R.A. Brenner, C. Bricman, L. Brillault, R.C.A. Brown, P. Bruckman, J.-M. Brunet, L. Bugge, T. Buran, A. Buys, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, K. Cankocak, F. Cao, F. Carena, P. Carrilho, L. Carroll, C. Caso, V. Cassio, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, P. Chliapnikov, P. Chochula, V. Chorowicz, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, A. Daum, P.D. Dauncey, M. Davenport, W. Da Silva, C. Defoix, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, K.-A. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Elsing, J.-P. Engel, N. Ershaidat, M. Espirito Santo, V. Falaleev, D. Fassouliotis, M. Feindt, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J.-P. Gerber, D. Gillespie, R. Gokieli, B. Golob, G. Gopal, L. Gorn, M. Gorski, V. Gracco, F. Grard, E. Graziani, G. Grosdidier, P. Gunnarsson, M. Gunther, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S.-O. Holmgren, P.J. Holt, D. Holthuizen, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, P. Ioannou, J.N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, C. Joram, P Juillot, M. Kaiser, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, C. Kreuter, J. Krolikowski, I. Kronkvist, Z. Krumstein, W. Krupinski, P. Kubinec, W. Kucewicz, K. Kurvinen, C. Lacasta, I. Laktineh, S. Lamblot, J.W. Lamsa, L. Lanceri, D.W. Lane, P. Langefeld, V. Lapin, I. Last, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, C.K. Legan, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, J.M. Lopez, A. Lopez-Fernandez, M.A. Lopez Aguera, D. Loukas, P Lutz, L. Lyons, J. MacNaughton, G. Maehlum, A. Maio, V. Malychev, F. Mandl, J. Marco, B. Marechal, M. Margoni, J.-C. Marin, C. Mariotti, A. Markou, T. Maron, C. Martinez-Rivero, F. Martinez-Vidal, S.Marti i Garcia, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, C. Meroni, W.T. Meyer, M. Michelotto, E. Mighore, L. Mirabito, W.A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, L.M. Mundim, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, S. Navas, P. Negri, S. Nemecek, W. Neumann, N. Neumeister, R. Nicolaidou, B.S. Nielsen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, W. Oberschulte-Beckmann, V. Obraztsov, A.G. Olshevski, A. Onofre, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, P. Pages, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, J. Sanchez, M. Sannino, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, Y. Sedykh, A.M. Segar, A. Seitz, R. Sekulin, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, B. Sitar, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, I. Stavitski, K. Stepaniak, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, J.P. Tavernet, O. Tchikilev, A. Tilquin, J. Timmermans, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M.-L. Turluer, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Van Eldik, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, D. Wicke, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winteri, M. Witek, G. Wormser, K. Woschnagg, K. Yip, L. Yu, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G.C. Zucchelli, G. Zumerle, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Scattering cross-section, Physics, Nuclear and High Energy Physics, Particle physics, Logarithm, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Parton, Multiplicity (mathematics), 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Maxima
Abstract: This analysis, based on a sample of 170000 hadronic Z0 decays, provides a measurement of the K± and p/View the MathML source differential cross sections which is compared to string- and cluster fragmentation models. The total multiplicities for K± and p/View the MathML source per hadronic event were found to be: NK = 2.26 ± 0.18 and Np = 1.07 ± 0.14. The positions ξ* of the maxima of the differential cross sections as a function of ξ = ln(1/xp) for K± and p/View the MathML source were determined to be 2.63 ± 0.07 and 2.96 ± 0.16 respectively. A comparison of the ξ* values for various identified particles measured at LEP with the prediction of the Modified Leading Logarithm Approximation with Local Parton Hadron Duality model has been performed. The measured ξ* position as a function of the hadron mass, after corrections due to particle decays, is in agreement with the model calculation.
Published: 1995

32. Interference of Neutral Kaons In the Hadronic Decays of the Z(0)

Author: P Abreu, W Adam, T Adye, E Agasi, I Ajinenko, R Aleksan, G.D Alekseev, A Algeri, P Allport, S Almehed, S.J Alvsvaag, U Amaldi, A Andreazza, P Antilogus, W.-D Apel, R.J Apsimon, Y Arnoud, B Åsman, J.-E Augustin, A Augustinus, P Baillon, P Bambade, F Barao, R Barate, G Barbiellini, D.Y Bardin, G.J Barker, A Baroncelli, O Barring, J.A Barrio, W Bartl, M.J Bates, M Battaglia, M Baubillier, M Begalli, P Beilliere, P Beltran, A.C Benvenuti, M Berggren, D Bertrand, F Bianchi, M Bigi, M.S Bilenky, P Billoir, J Bjarne, D Bloch, J Blocki, M Blume, S Blyth, V Bocci, P.N Bogolubov, T Bolognese, M Bonesini, W Bonivento, P.S.L Booth, G Borisov, H Borner, C Bosio, B Bostjancic, S Bosworth, O Botner, B Bouquet, C Bourdarios, T.J.V Bowcock, M Bozzo, S Braibant, P Branchini, K.D Brand, T Brenke, R.A Brenner, H Briand, C Bricman, L Brillault, R.C.A Brown, P Bruckman, J.-M Brunet, A Budziak, L Bugge, T Buran, H Burmeister, A Buys, J.A.M.A Buytaert, M Caccia, M Calvi, A.J Camacho Rozas, R Campion, T Camporesi, V Canale, K Cankocak, F Cao, F Carena, L Carroll, M.V Castillo Gimenez, A Cattai, F.R Cavallo, L Cerrito, V Chabaud, A Chan, M Chapkin, Ph Charpentier, J Chauveau, P Checchia, G.A Chelkov, L Chevalier, P Chliapnikov, V Chorowicz, J.T.M Chrin, V Cindro, P Collins, J.L Contreras, R Contri, E Cortina, G Cosme, F Couchot, H.B Crawley, D Crennell, G Crosetti, J.Cuevas Maestro, S Czellar, E Dahl-Jensen, J Dahm, B Dalmagne, M Dam, G Damgaard, E Daubie, A Daum, P.D Dauncey, M Davenport, J Davies, W Da Silva, C Defoix, P Delpierre, N Demaria, A De Angelis, H De Boeck, W De Boer, S De Brabandere, C De Clercq, M.D.M De Fez Laso, C De La Vaissiere, B De Lotto, A De Min, H Dijkstra, L Di Ciacco, F Djama, J Dolbeau, M Donszelmann, K Doroba, M Dracos, J Drees, M Dris, Y Dufour, F Dupont, D Edsall, L.-O Eek, P.A.-M Eerola, R Ehret, T Ekelof, G Ekspong, A.Elliot Peisert, M Elsing, J.-P Engel, N Ershaidat, M Espirito Santo, V Falaleev, D Fassouliotis, M Feindt, A Fenyuk, A Ferrer, T.A Filippas, A Firestone, H Foeth, E Fokitis, F Fontanelli, K.A.J Forbes, J.-L Fousset, S Francon, B Franek, P Frenkiel, D.C Fries, A.G Frodesen, R Fruhwirth, F Fulda-Quenzer, H Furstenau, J Fuster, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, U Gasparini, Ph Gavillet, E.N Gazis, J.-P Gerber, P Giacomelli, D Gillespie, R Gokieli, B Golob, V.M Golovatyuk, J.J Gomez Y Cadenas, G Gopal, L Gorn, M Gorski, V Gracco, A Grant, F Grard, E Graziani, G Grosdidier, E Gross, B Grossetete, P Gunnarsson, J Guy, U Haedinger, F Hahn, M Hahn, S Hahn, S Haider, Z Hajduk, A Hakansson, A Hallgren, K Hamacher, G Hamel De Monchenault, W Hao, F.J Harris, V Hedberg, T Henkes, R Henriques, J.J Hernandez, J.A Hernando, P Herquet, H Herr, T.L Hessing, I Hietanen, C.O Higgins, E Higon, H.J Hilke, T.S Hill, S.D Hodgson, T Hofmokl, S.-O Holmgren, P.J Holt, D Holthuizen, P.F Honore, M Houlden, J Hrubec, K Huet, K Hultqvist, P Ioannou, P.-S Iversen, J.N Jackson, R Jacobsson, P Jalocha, G Jarlskog, P Jarry, B Jean-Marie, E.K Johansson, M Jonker, L Jonsson, P Juillot, G Kalkanis, G Kalmus, F Kapusta, M Karlsson, E Karvelas, S Katsanevas, E.C Katsoufis, R Keranen, B.A Khomenko, N.N Khovanski, B King, N.J Kjaer, H Klein, A Klovning, P Kluit, A Koch-Mehrin, J.H Koehne, B Koene, P Kokkinias, M Koratzinos, A.V Korytov, V Kostioukhine, C Kourkoumelis, O Kouznetsov, P.H Kramer, M Krammer, C Kreuter, J Krolikowski, I Kronkvist, W Kucewicz, K Kulka, K Kurvinen, C Lacasta, C Lambropoulos, J.W Lamsa, L Lanceri, P Langefeld, V Lapin, I Last, J.-P Laugier, R Lauhakangas, G Leder, F Ledroit, R Leitner, Y Lemoigne, J Lemonne, G Lenzen, V Lepeltier, J.M Levy, E Lieb, D Liko, J Lindgren, R Lindner, A Lipniacka, I Lippi, B Loerstad, M Lokajicek, J.G Loken, A Lopez-Fernandez, M.A Lopez Aguera, M Los, D Loukas, J.J Lozano, P Lutz, L Lyons, G Maehlum, J Maillard, A Maio, A Maltezos, J Marco, M Margoni, J.-C Marin, C Mariotti, A Markou, T Maron, S Marti, C Martinez-Rivero, F Martinez-Vidal, F Matorras, C Matteuzzi, G Matthiae, M Mazzucato, M Mc Cubbin, R Mc Kay, R Mc Nulty, J Medbo, C Meroni, W.T Meyer, M Michelotto, I Mikulec, L Mirabito, W.A Mitaroff, G.V Mitselmakher, U Mjoernmark, T Moa, R Moeller, K Moenig, M.R Monge, P Morettini, H Mueller, W.J Murray, B Muryn, G Myatt, F Naraghi, F.L Navarria, P Negri, S Nemecek, W Neumann, N Neumeister, R Nicolaidou, B.S Nielsen, P.E.S Nilsen, P Niss, A Nomerotski, V Obraztsov, A.G Olshevski, R Orava, A Ostankov, K Osterberg, A Ouraou, P Paganini, M Paganoni, R Pain, H Palka, Th.D Papadopoulou, L Pape, F Parodi, A Passeri, M Pegoraro, J Pennanen, L Peralta, H Pernegger, M Pernicka, A Perrotta, C Petridou, A Petrolini, G Piana, F Pierre, M Pimenta, S Plaszczynski, O Podobrin, M.E Pol, G Polok, P Poropat, V Pozdniakov, M Prest, P Privitera, A Pullia, D Radojicic, S Ragazzi, H Rahmani, J Rames, P.N Ratoff, A.L Read, M Reale, P Rebecchi, N.G Redaelli, M Regler, D Reid, P.B Renton, L.K Resvanis, F Richard, J Richardson, J Ridky, G Rinaudo, A Romero, I Roncagliolo, P Ronchese, C Ronnqvist, E.I Rosenberg, E Rosso, P Roudeau, T Rovelli, W Ruckstuhl, V Ruhlmann-Kleider, A Ruiz, K Rybicki, A Rybin, H Saarikko, Y Sacquin, G Sajot, J Salt, J Sanchez, M Sannino, S Schael, H Schneider, M.A.E Schyns, G Sciolla, F Scuri, A.M Segar, A Seitz, R Sekulin, M Sessa, R Seufert, R.C Shellard, I Siccama, P Siegrist, S Simonetti, F Simonetto, A.N Sisakian, G Skjevling, G Smadja, N Smirnov, O Smirnova, G.R Smith, R Sosnowski, D Souza-Santos, T Spassov, E Spiriti, S Squarcia, C Stanescu, S Stapnes, G Stavropoulos, F Stichelbaut, A Stocchi, J Strauss, J Straver, R Strub, B Stugu, M Szczekowski, M Szeptycka, P Szymanski, T Tabarelli, O Tchikilev, G.E Theodosiou, A Tilquin, J Timmermans, V.G Timofeev, L.G Tkatchev, T Todorov, D.Z Toet, O Toker, A Tomaradze, B Tome, E Torassa, L Tortora, D Treille, W Trischuk, G Tristram, C Troncon, A Tsirou, E.N Tsyganov, M Turala, M.-L Turluer, T Tuuva, I.A Tyapkin, M Tyndel, S Tzamarias, B Ueberschaer, S Ueberschaer, O Ullaland, G Valenti, E Vallazza, J.A Valls Ferrer, C Vander Velde, G.W Van Apeldoorn, P Van Dam, M Van Der Heijden, W.K Van Doninck, J Van Eldik, P Vaz, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, L.S Vertogradov, D Vilanova, P Vincent, L Vitale, E Vlasov, A.S Vodopyanov, M Vollmer, M Voutilainen, V Vrba, H Wahlen, C Walck, F Waldner, A Wehr, M Weierstall, P Weilhammer, A.M Wetherell, J.H Wickens, M Wielers, G.R Wilkinson, W.S.C Williams, M Winter, G Wormser, K Woschnagg, A Zaitsev, A Zalewska, D Zavrtanik, E Zevgolatakos, N.I Zimin, M Zito, D Zontar, R Zuberi, G Zumerle, J Zuniga, 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 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 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), 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), 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, Delphi (IHEF, IoP, FNWI), 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), 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)-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), Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, e+e- annihilation, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, Monte Carlo method, Elementary particle, BOSE-EINSTEIN CORRELATIONS, JET FRAGMENTATION, COHERENCE, PARTICLES, PHYSICS, PAIRS, Interference (wave propagation), 01 natural sciences, Bose-Einstein correlation, Nuclear physics, Particle decay, DELPHI, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Physics, 010308 nuclear & particles physics, Radius, Mass spectrum, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: K0SK0S correlations have been studied in a sample of 717 511 hadronic events collected by the DELPHI detector at LEP during 1992. An enhancement is found in the production of pairs of K0S of similar momenta, as compared with a Monte Carlo simulated reference sample. The measured values for the strength of the correlation and the radius of the emitting source of kaons are λ = 1.13 ± 0.54 (stat) ± 0.23 (syst) and r = 0.90 ± 0.19 (stat) ± 0.10 (syst) fm. This enhancement is consistent with the hypothesis that K0SK0S pairs display an enhancement, regardless of whether they come from a K0K0 or from a K0K0 (K0K0) system.
Published: 1994

33. Measurement of time dependent mixing

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, I. Ajinenko, R. Aleksan, G.D. Alekseev, P.P. Allport, S. Almehed, F.M.L. Almeida, S.J. Alvsvaag, U. Amaldi, A. Andreazza, P. Antilogus, W-D. Apel, R.J. Apsimon, Y. Arnoud, B. Åsman, J-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, D.Y. Bardin, G.J. Barker, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, J. Bausot, K-H. Becks, M. Begalli, P. Beilliere, K. Belous, P. Beltran, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M. Bigi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, J. Blocki, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, G. Borisov, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, L. Brillault, R.C.A. Brown, P. Bruckman, J-M. Brunet, L. Bugge, T. Buran, A. Buys, M. Caccia, M. Calvi, A.J. Camacho Rozas, R. Campion, T. Camporesi, V. Canale, K. Cankocak, F. Cao, F. Carena, P. Carrilho, L. Carroll, R. Cases, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, V. Cindro, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Cossutti, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, J. Dahm, B. Dalmagne, M. Dam, G. Damgaard, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, J. Davies, W. Da Silva, C. Defoix, G. Della Ricca, P. Delpierre, N. Demaria, A. De Angelis, H. De Boeck, W. De Boer, S. De Brabandere, C. De Clercq, M.D.M. De Fez Laso, C. De La Vaissiere, B. De Lotto, A. De Min, L. De Paula, C. De Saint-Jean, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, F. Dupont, D. Edsall, R. Ehret, T. Ekelof, G. Ekspong, M. Elsing, J-P. Engel, N. Ershaidat, M. Espirito Santo, D. Fassouliotis, M. Feindt, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, F. Formenti, J-L. Fousset, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, H. Furstenau, J. Fuster, D. Gamba, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, D. Gele, J-P. Gerber, D. Gillespie, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, G. Gopal, L. Gorn, M. Gorski, V. Gracco, F. Grard, E. Graziani, G. Grosdidier, P. Gunnarsson, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, W. Hao, F.J. Harris, V. Hedberg, R. Henriques, J.J. Hernandez, J.A. Hernando, P. Herquet, H. Herr, T.L. Hessing, E. Higon, H.J. Hilke, T.S. Hill, S-O. Holmgren, P.J. Holt, D. Holthuizen, P.F. Honore, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, P. Ioannou, P-S. Iversen, J.N. Jackson, R. Jacobsson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, L. Jonsson, P. Juillot, M. Kaiser, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, A. Katargin, S. Katsanevas, E.C. Katsoufis, R. Keranen, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Koratzinos, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.-H. Kramer, M. Krammer, C. Kreuter, J. Krolikowski, I. Kronkvist, W. Krupinski, W. Kucewicz, K. Kulka, K. Kurvinen, C. Lacasta, I. Laktineh, C. Lambropoulos, J.W. Lamsa, L. Lanceri, P. Langefeld, V. Lapin, I. Last, J-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, J.M. Levy, E. Lieb, D. Liko, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maio, A. Maltezos, F. Mandl, J. Marco, B. Marechal, M. Margoni, J-C. Marin, C. Mariotti, A. Markou, T. Maron, S. Marti, C. Martinez-Rivero, F. Martinez-Vidal, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, J. Medbo, C. Meroni, W.T. Meyer, M. Michelotto, E. Migliore, I. Mikulec, L. Mirabito, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, P. Negri, S. Nemecek, W. Neumann, R. Nicolaidou, B.S. Nielsen, V. Nikolaenko, P. Niss, A. Nomerotski, A. Normand, V. Obraztsov, A.G. Olshevski, R. Orava, K. Osterberg, A. Ouraou, P. Paganini, M. Paganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, F. Parodi, A. Passeri, M. Pegoraro, J. Pennanen, L. Peralta, V. Perevozchikov, H. Pernegger, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H.T. Phillips, G. Piana, F. Pierre, M. Pimenta, S. Plaszczynski, O. Podobrin, M.E. Pol, G. Polok, P. Poropat, V. Pozdniakov, M. Prest, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, J. Rames, P.N. Ratoff, A.L. Read, M. Reale, P. Rebecchi, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Richardson, J. Ridky, G. Rinaudo, I. Ripp, A. Romero, I. Roncagliolo, P. Ronchese, L. Roos, E.I. Rosenberg, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, A. Seitz, R. Sekulin, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, T.B. Skaali, G. Smadja, N. Smirnov, O. Smirnova, G.R. Smith, R. Sosnowski, D. Souza-Santos, T. Spassov, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, I. Stavitski, G. Stavropoulos, K. Stepaniak, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, O. Tchikilev, G.E. Theodosiou, Z. Thome, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, A. Tomaradze, B. Tome, E. Torassa, L. Tortora, G. Transtromer, D. Treille, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, M. Van Der Heijden, W.K. Van Doninck, J. Van Eldik, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L.S. Vertogradov, D. Vilanova, P. Vincent, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, A. Wehr, M. Weierstall, P. Weilhammer, A.M. Wetherell, J.H. Wickens, M. Wielers, G.R. Wilkinson, W.S.C. Williams, M. Winter, M. Witek, G. Wormser, K. Woschnagg, K. Yip, O. Yushchenko, F. Zach, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N.I. Zimin, M. Zito, D. Zontar, R. Zuberi, G. Zumerle, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Charge (physics), 01 natural sciences, b-tagging, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Mixing (physics)
Abstract: The time dependent mixing of View the MathML source mesons has been observed by using the correlations between the charge of D∗ mesons and the weighted mean charge of particles in each hemisphere. From a reconstructed D∗± sample corresponding to about 1.7 million hadronic Z0 decays, the mass difference between the two Bd0 mass eigenstates has been measured to be View the MathML source or, converting into eV/c2: Δm = [3.29 ± 0.79 (stat) ± 0.39 (syst.)] 10−4 eV/c2.
Published: 1994

34. A measurement of the tau lifetime

Author: C. Gaspar, S. Francon, M. Jonker, A. B. Fenyuk, Andrea Perrotta, W. Da Silva, E. Graziani, M. Crozon, R. Mc Nulty, P. Vaz, Luis Peralta, E. Dahl-Jensen, F. Simonetto, P. Abreu, G. Smadja, T. Maron, O.M. Kouznetsov, C. Bricman, A. Elliot Peisert, M. Fernandez Alonso, M. Bozzo, A. Pullia, V. Obraztsov, C. Vander Velde, Stefano Ragazzi, A. Hakansson, V. Lepeltier, D. Vilanova, P. Van Dam, J-C. Marin, M. Szeptycka, Rupert Leitner, J. Kesteman, G. D. Alekseev, G. Darbo, B. Jean-Marie, N. Ershaidat, G. Skjevling, M. Mc Cubbin, A. Hallgren, K. Hultqvist, Georgios Stavropoulos, M. Tyndel, T.A. Filippas, K. Woschnagg, T. Todorov, F. Mandl, Ph. Gavillet, I. Lippi, L. Mathis, H. P. Borner, Stefan Schael, H. Furstenau, A. Ferrer, O. Tchikilev, M. Voutilainen, G. Grosdidier, A. Rybin, F. Carena, Louis Lyons, Juan Abel Barrio, J.E. Hooper, B. Loerstad, V. Lapin, M.A.E. Schyns, A. N. Sisakian, M. A. Winter, M. Dracos, P. V. Chliapnikov, R. Aleksan, B. Bostjancic, A. Daum, L. K. Resvanis, U. Gasparini, M. Davenport, A. Romero, B.S. Nielsen, O. Botner, Guido Barbiellini, J. Guy, Tim Adye, M. Richardson, Claire Bourdarios, J. P. Gerber, W.S.C. Williams, T. Henkes, B. De Lotto, Evgueni Vlasov, M. Szczekowski, M. Koratzinos, Maria Elena Pol, S. Katsanevas, J.-E. Augustin, W.A. Mitaroff, H. Burmeister, D. Y. Bardin, R. Fruhwirth, A. Ruiz, C. Defoix, M. Witek, H. Herr, G. W. Van Apeldoorn, P. F. Honore, G. Rinaudo, R. Campion, Massimo Caccia, J. T.M. Chrin, Vladimir Nikolaenko, Itzhak Roditi, R. Pain, L. G. Tkatchev, G. Leder, A. Seitz, J. Timmermans, G. Sciolla, Y. Lemoigne, J. Werner, H. Pernegger, W. K. van Doninck, M. Margoni, M. Michelotto, C. J. Beeston, K. Kulka, Robert S. Brown, E. Cortina, D. Johnson, R. Ehret, H. Staeck, B. Nijjhar, J. Davies, A. Baroncelli, P. Jalocha, H. Saarikko, O. Podobrin, A. Wehr, V. Canale, M.A. Lopez Aguera, Francesca Romana Cavallo, P. Niss, S. Tzamarias, Eugene P. Gross, A. Chan, B. Dalmagne, E. Rosso, H. Klein, T. S. Spassoff, L. Ventura, M.P. Clara, A. De Min, I. Siccama, T. Tabarelli, M. Dris, U. Kruener-Marquis, W. Ruckstuhl, W.T. Meyer, Mitchell Wayne, I. Hietanen, Laurent Chevalier, M. Houlden, M. Mazzucato, F. Hahn, H. Mueller, G. Sajot, V. Chorowicz, P.H. Kramer, E. Lieb, K. Osterberg, F. Parodi, J. J. Gomez Y Cadenas, F. Richard, R. Sekulin, J. Hrubec, G. Wormser, L. Tortora, G. A. Chelkov, D. Bertrand, K. Huet, Patrick Jarry, P. Beltran, K. Doroba, K. Korcyl, P. N. Bogolubov, Christine Kourkoumelis, C. Lambropoulos, Ugo Amaldi, Ariella Cattai, J. Salt, W. De Boer, E. Zevgolatakos, P. E. S. Nilsen, W. J. Murray, C. Matteuzzi, Milos Lokajicek, T.E. Pettersen, A. Maio, M. Los, M. Hahn, M. van der Heijden, K.A.J. Forbes, C. Stanescu, C.O. Higgins, P. Morettini, F. Ledroit, F. Fulda-Quenzer, B. Golob, J. Cuevas Maestro, R. Strub, A. Petrolini, N. J. Kjaer, V. Kostioukhine, R. Moeller, J. Krolikowski, T. Moa, R. Holmes, Pierre Juillot, B. Koene, S. Almehed, S. Gumenyuk, M. Karlsson, O. Ullaland, Leif J. Jönsson, E.C. Katsoufis, Alberto Benvenuti, M. Pegoraro, G. Sette, P.S.L. Booth, M. Regler, S. Marti, G. Matthiae, E.N. Gazis, K.-H. Becks, R. Contri, P. Yepes, A. Maltezos, A. Firestone, E. Spiriti, P. Frenkiel, S. Simonetti, G. Polok, G. Cosme, S. J. Alvsvaag, E. Agasi, Tiziano Camporesi, G. Damgaard, Richard Brenner, F. J. Harris, Fares Djama, H. Briand, G.J. Barker, George Kalkanis, P. B. Renton, S. Squarcia, N. G. Redaelli, R. Lindner, Carlos Lacasta, G. Vegni, D. Fassouliotis, William Trischuk, A. Markou, J. G. Loken, H. Foeth, G. Maehlum, M. L. Turluer, E. Vallazza, D. Liko, N. Demaria, G. Hamel de Monchenault, T. Ekelof, N. Brummer, B. Franek, Tiziano Rovelli, D. Reid, D. C. Fries, Paula Eerola, S. Stapnes, J. Straver, R. J. Apsimon, P. Privitera, K. Kurvinen, M. Verlato, F. Waldner, S. Braibant, V. Chabaud, Javier Sánchez, D. J. Holthuizen, S. Ueberschaer, M. Weierstall, H.B. Crawley, D. Zavrtanik, R. Mc Nay, C. Walck, Marta Calvi, R. Barate, G. E. Kalmus, W. Venus, Guenakh Mitselmakher, J. J. Hernandez, P. O. Hulth, C. Ronnqvist, Z. Hajduk, W. Hao, O. Barring, S. Haider, A. P. Ostankov, F. Couchot, P. Delpierre, F. Cao, A. Tilquin, P. Grosse-Wiesmann, A. De Angelis, G. Gopal, E. Fokitis, A. Zalewska, Geoffrey Smith, P. Collins, P. Herquet, M. Gorski, P. Checchia, A. G. Olshevski, M. Dam, E. Daubie, G. Crosetti, P. Poropat, Chariclia Petridou, Andromachi Tsirou, P. Vincent, Daniel Bloch, O. Pingot, G. Lenzen, Mario Sannino, B. Bouquet, D. Souza-Santos, I. Kronkvist, P. Ronchese, P. Roudeau, J. Maillard, S. Rossi, V. G. Timofeev, J. Chauveau, F. Bianchi, Andre Augustinus, J.N. Jackson, Ahmimed Ouraou, V.M. Golovatyuk, F. Barao, Y. Sacquin, G. Myatt, Luc Pape, V. Gracco, G. Borisov, R. Orava, M. Berggren, M. J. Bates, E. Higon, R. Seufert, R. Gokieli, S. Bosworth, Bruno Schulze, F. Scuri, Daniel Treille, S. D. Hodgson, T. Buran, A. M. Wetherell, A.L. Read, A. M. Zaitsev, Alexander Vodopyanov, E. G. Anassontzis, J. P. Engel, P. Bambade, M. V. Castillo Gimenez, Wolfgang Adam, L. Lanceri, Stéphane Plaszczynski, M.R. Monge, J. Dolbeau, G. Voulgaris, Laurent Mirabito, L. Di Ciaccio, A. Lipniacka, C. De Clercq, E.I. Rosenberg, R. Zuberi, U. Rossi, E. Karvelas, B. King, Paolo Giacomelli, B. Stugu, F. Stichelbaut, Pavlos Ioannou, A. Passeri, Yu. Belokopytov, M. Zito, Carmen García, Klaus Moenig, I. Mikulec, I. Roncagliolo, Juan Fuster, R. Sosnowski, U. Haedinger, J. Lindgren, L. Carroll, J. M. Levy, G. Zumerle, E.N. Tsyganov, Marco Paganoni, Jose Luis Contreras, P. Branchini, M. Feindt, P. Negri, H. Schneider, Göran Jarlskog, D. Radojicic, Jan Ridky, J. Strauss, L.-O. Eek, B. Grossetete, W. D. Apel, Th D. Papadopoulou, R. Lauhakangas, Ph. Charpentier, H. Wahlen, G. Zhang, M. Sessa, M. S. Bilenky, W. Bartl, M. Donszelmann, A. Koch-Mehrin, P. Weilhammer, P. Billoir, T. Lesiak, Peter M. Allen, M. Pimenta, B. A. Khomenko, N. De Groot, A. Stocchi, Francesco Navarria, J. Zúñiga, Fernand Grard, D. Crennell, T. Hofmokl, W. Kucewicz, M. Vollmer, D. Gamba, J. J. Lozano, Chiara Meroni, Jan Buytaert, D. Benedic, Peter Kluit, A. Klovning, H. De Boeck, I.A. Tyapkin, Y. Arnoud, U. Mjoernmark, J. Garcia, F. Dupont, Andrey Korytov, N. N. Khovanski, P. Lutz, J. A. Valls Ferrer, J.-M. Brunet, J. P. Laugier, J. Bjarne, B. Tome, P. Antilogus, Demetrios Loukas, G. Valenti, F. Pierre, Vincent Hedberg, G. Ekspong, P. N. Ratoff, M. Begalli, J.W. Lamsa, S. O. Holmgren, C. Bosio, H. J. Hilke, K.D. Brand, M. Pernicka, L. S. Vertogradov, L. Chaussard, L. Vitale, A. Algeri, R. Zukanovich Funchal, J.H. Wickens, J. Drees, O. Toker, E. Torassa, R. C. Shellard, Ariel Goobar, G. E. Theodosiou, J. H. Koehne, A. M. Segar, P. S. Iversen, T.L. Hessing, S. C. Blyth, G. Meola, G. Wilkinson, F. Kapusta, V. Ruhlmann-Kleider, P. Beilliere, M.D.M. De Fez Laso, V.A. Uvarov, G. Tristram, J. Marco, A. Andreazza, Paul Baillon, P. Kokkinias, P. David, J. Lemonne, M. Battaglia, R. Keranen, Francisco Matorras, N. Yamdagni, Y. Dufour, U. Trevisan, P. D. Dauncey, Sandor Czellar, H. Rahmani, P. Zalewski, P. Szymanski, K. Hamacher, A.J. Camacho Rozas, A. Grant, V. Vrba, Hans Dijkstra, K. Furnival, M. Bonesini, T. Bolognese, W. Bonivento, V. Bocci, E. K. Johansson, M. Baubillier, J.-L. Fousset, T.J.V. Bowcock, D. Z. Toet, P. Siegrist, L. Cerrito, L. Bugge, A. Lopez-Fernandez, F. Fontanelli, F. Verbeure, Tuure Tuuva, Clara Troncon, C. De La Vaissiere, J. Pennanen, N. I. Zimin, A. G. Frodesen, 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 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 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), 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 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 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), 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, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Physics, Coupling constant, Particle physics, Argus, Nuclear and High Energy Physics, Muon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, Decay length, LEPTONS, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Física nuclear, Combined result, 010306 general physics, computer, Particle Physics - Experiment, Fermi Gamma-ray Space Telescope, Lepton, computer.programming_language
Abstract: The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three measurements using one prong decays are combined, accounting for correlations, resulting in tau(tau) = 298 +/- 7 (stat.) +/- 4 (syst.) fs while the decay length distribution of three prong decays gives tau(tau) = 298 +/- 13 (stat.) +/- 5 (syst.) fs. The combined result is tau(tau) = 298 +/- 7 fs. The ratio of the Fermi coupling constant from tau decay relative to that from muon decay is found to be 0.985 +/- 0.013, compatible with lepton universality.
Published: 1993

35. Evidence for B$^{0}_{s}$ meson production in Z$^0$ decays

Author: P. Abreu, W. Adam, T. Adye, E. Agasi, G.D. Alekseev, A. Algeri, P. Allen, S. Almehed, S.J. Alvsvaag, U. Amaldi, E.G. Anassontzis, A. Andreazza, P. Antilogus, W.-D. Apel, R.J. Apsimon, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, A. Baroncelli, O. Barring, J.A. Barrio, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K.-H. Becks, C.J. Beeston, M. Begalli, P. Beilliere, Yu. Belokopytov, K. Belous, P. Beltran, D. Benedic, A.C. Benvenuti, M. Berggren, D. Bertrand, F. Bianchi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonesini, W. Bonivento, P.S.L. Booth, P. Borgeaud, G. Borisov, H. Borner, C. Bosio, B. Bostjancic, S. Bosworth, O. Botner, B. Bouquet, C. Bourdarios, T.J.V. Bowcock, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, R.C.A. Brown, N. Brummer, J.-M. Brunet, L. Bugge, T. Buran, H. Burmeister, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, T. Camporesi, V. Canale, F. Cao, F. Carena, L. Caroll, C. Caso, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, V. Chabaud, A. Chan, M. Chapkin, Ph. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, J.T.M. Chrin, R. Cirio, M.P. Clara, P. Collins, J.L. Contreras, R. Contri, E. Cortina, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, M. Crozon, J. Cuevas Maestro, S. Czellar, E. Dahl-Jensen, B. Dalmagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, A. Daum, P.D. Dauncey, M. Davenport, P. David, W. Da Silva, C. Defoix, D. Delikaris, S. Delorme, P. Delpierre, N. Demaria, A. De Angelis, M. De Beer, H. De Boeck, W. De Boer, C. De Clercq, M.D.M. De Fez Laso, N. De Groot, C. De La Vaissiere, B. De Lotto, A. De Min, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, R. Dzhelyadin, L.-O. Eek, P.A.-M. Eerola, R. Ehret, T. Ekelof, G. Ekspong, A. Elliot Peisert, J.-P. Engel, D. Fassouliotis, M. Feindt, A. Fenyuk, M. Fernandez Alonso, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, K.A.J. Forbes, J.-L. Fousset, S. Francon, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, K. Furnival, H. Furstenau, J. Fuster, G. Galeazzi, D. Gamba, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, Ph. Gavillet, E.N. Gazis, J.-P. Gerber, P. Giacomelli, R. Gokieli, B. Golob, V.M. Golovatyuk, J.J. Gomez Y Cadenas, A. Goobar, G. Gopal, M. Gorski, V. Gracco, A. Grant, F. Grard, E. Graziani, G. Grosdidier, E. Gross, P. Grosse-Weismann, B. Grossetete, S. Gumenyuk, J. Guy, U. Haedinger, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G. Hamel De Mochenault, W. Hao, F.J. Harris, T. Henkes, J.J. Hernandez, P. Herquet, H. Herr, T.L. Hessing, I. Hietanen, C.O. Higgins, E. Higon, H.J. Hilke, S.D. Hodgson, T. Hofmokl, R. Holmes, S.-O. Holmgren, D. Holthuizen, P.F. Honore, J.E. Hooper, M. Houlden, J. Hrubec, C. Huet, P.O. Hulth, K. Hultqvist, P. Ioannou, D. Isenhower, P.-S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, D. Johnson, M. Jonker, L. Jonsson, P. Juillot, G. Kalkanis, G. Kalmus, F. Kapusta, M. Karlsson, E. Karvelas, A. Katargin, S. Katsanevas, E.C. Katsoufis, R. Keranen, J. Kesteman, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kiaer, H. Klein, W. Klempt, A. Klovning, P. Kluit, A. Koch-Mehrin, J.H. Koehne, B. Koene, P. Kokkinias, M. Kopf, K. Korcyl, A.V. Korytov, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, P.H. Kramer, J. Krolikowski, I. Kronkvist, J. Krstic, U. Kruener-Marquis, W. Krupinski, K. Kulka, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, J.M. Levy, E. Lieb, D. Liko, E. Lillethun, J. Lindgren, R. Lindner, A. Lipniacka, I. Lippi, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A. Lopez Aguera, M. Los, D. Loukas, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maltezos, F. Mandl, J. Marco, M. Margoni, J.-C. Marin, A. Markou, T. Maron, S. Marti, L. Mathis, F. Matorras, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, G. Meola, C. Meroni, W.T. Meyer, M. Michelotto, I. Mikulec, L. Mirabito, W.A. Mitaroff, G.V. Mitselmakher, U. Mioernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, P. Negri, B.S. Nielsen, B. Nijjhar, V. Nikolaenko, P.E.S. Nilsen, P. Niss, V. Obraztsov, A.G. Olshevski, R. Orava, A. Ostankov, K. Osterberg, A. Ouraou, M. Paganoni, R. Pain, H. Palka, Th.D. Papadopoulou, L. Pape, A. Passeri, M. Pegoraro, J. Pennanen, V. Perevozchikov, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, T.E. Pettersen, F. Pierre, M. Pimenta, O. Pingot, M.E. Pol, G. Polok, P. Poropat, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani's, P.N. Ratoff, A.L. Read, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, M. Richardson, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, I. Roncagliolo, P. Ronchese, V. Ronjin, C. Ronnqvist, E.I. Rosenberg, S. Rossi, U. Rossi, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, J. Sanchez, M. Sannino, S. Schael, H. Schneider, M.A.E. Schyns, G. Sciolla, F. Scuri, A.M. Segar, R. Sekulin, M. Sessa, G. Sette, R. Seufert, R.C. Shellard, I. Siccama, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sisakian, T.B. Skaali, G. Skjevling, G. Smadja, N. Smirnov, G.R. Smith, R. Sosnowski, T.S. Spassoff, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, S. Stapnes, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, J. Straver, R. Strub, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, S. Tavernier, O. Tchikilev, G.E. Theodosiou, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, O. Toker, A. Tomaradze, E. Torassa, L. Tortora, M.T. Trainor, D. Treilli, U. Trevisan, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M. Turala, M.-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, L.S. Vertogradov, D. Vilanova, P. Vincent, N. Vishnevsky, L. Vitale, E. Vlasov, A.S. Vodopyanov, M. Vollmer, G. Voulgaris, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Wayne, A. Wehr, M. Weierstall, P. Weilhammer, J. Werner, A.M. Wetherell, J.H. Wickens, J. Wikne, G.R. Wilkinson, W.S.C. Williams, M. Winter, D. Wormald, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, G. Zhang, N.I. Zimin, M. Zito, R. Zuberi, R. Zukanovich Funchal, G. Zumerle, J. Zuniga, 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 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), 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, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, 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), 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), 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: Nuclear and High Energy Physics, Particle physics, Meson production, Meson, LUND MONTE-CARLO, Electron–positron annihilation, Nuclear Theory, Hadron, 01 natural sciences, COLLIDER, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], B meson, Nuclear Experiment, 010306 general physics, Physics, Muon, Z0 DECAYS, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Transverse momentum, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment, Production rate
Abstract: Seven unambiguous events out of a sample of 270 000 Z0 decays, contain in tile same jet a D(s) meson and a muon at large transverse momentum relative to the et axis. These events are direct evidence for B(s)0 meson production in hadronic Z0 decays. The production rate of these events, relative to all hadronic Z0 decays is ( 18 +/- 8) x 10(-5) this number including the relevant branching fractions of the B(s)0 and D(s). The value of the B(s)0 meson lifetime relative to the average B meson lifetime is measured to be 0.8 +/- 0.4.
Published: 1992

36. A Measurement of the Bbbar Forward-backward Asymmetry Using the Semileptonic Decay Into Muons

Author: P. Abreu, W. Adam, F. Adami, T. Adye, T. Akesson, G.D. Alekseev, P. Allen, S. Almehed, S.J. Alvsvaag, U. Amaldi, E.G. Anassontzis, P. Antilogus, W.-D. Apel, R.J. Apsimon, B. Åsman, J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, R. Barate, G. Barbiellini, D.Y. Bardin, A. Baroncelli, O. Barring, W. Bartl, M.J. Bates, M. Battaglia, M. Baubillier, K.-H. Becks, C.J. Beeston, M. Begalli, P. Beilliere, Yu. Belokopytov, P. Beltran, D. Benedic, J.M. Benlloch, M. Berggren, D. Bertrand, F. Bianchi, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, S. Blyth, V. Bocci, P.N. Bogolubov, T. Bolognese, M. Bonapart, M. Bonesini, W. Bonivento, P.S.L. Booth, P. Borgeaud, G. Borisov, H. Borner, C. Bosio, B. Bostjancic, O. Botner, B. Bouquet, C. Bourdarios, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, H. Briand, C. Bricman, R.C.A. Brown, N. Brummer, J.-M. Brunet, L. Bugge, T. Buran, H. Burmeister, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J.Camacho Rozas, A. Campion, T. Camporesi, V. Canale, F. Cao, F. Carena, L. Carroll, C. Caso, E. Castelli, M.V.Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, A. Chan, M. Chapkin, P. Charpentier, L. Chaussard, J. Chauveau, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, R. Cirio, M.P. Clara, P. Collins, J.L. Contreras, R. Contri, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, M. Crozon, J.Cuevas Maestro, S. Czellar, S. Dagoret, E. Dahl-Jensen, B. Dalmagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, P.D. Dauncey, M. Davenport, P. David, W. Da Silva, C. Defoix, D. Delikaris, S. Delorme, P. Delpierre, N. Demaria, A. De Angelis, M. De Beer, H. De Boeck, W. De Boer, C. De Clercq, M.D.M. De Fez Laso, N. De Groot, C. De La Vaissiere, B. De Lotto, A. De Min, H. Dijkstra, L. Di Ciaccio, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, W. Dulinski, R. Dzhelyadin, L.-O. Eek, P.A.-M. Eerola, T. Ekelof, G. Ekspong, A.Elliot Peisert, J.-P. Engel, D. Fassouliotis, M. Feindt, M.Fernandez Alonso, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, P. Folegati, F. Fontanelli, K.A.J. Forbes, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, K. Furnival, H. Furstenau, J. Fuster, G. Galeazzi, D. Gamba, C. Garcia, J. Garcia, C. Gaspar, U. Gasparini, P. Gavillet, E.N. Gazis, J.-P. Gerber, P. Giacomelli, R. Gokieli, V.M. Golovatyuk, J.J.Gomez Y Cadenas, A. Goobar, G. Gopal, M. Gorski, V. Gracco, A. Grant, F. Grard, E. Graziani, G. Grosdidier, E. Gross, P. Grosse-Wiesmann, B. Grossetete, S. Gumenyuk, J. Guy, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G.Hamel De Monchenault, F.J. Harris, B.W. Heck, T. Henkes, J.J. Hernandez, P. Herquet, H. Herr, I. Hietanen, C.O. Higgins, E. Higon, H.J. Hilke, S.D. Hodgson, T. Hofmokl, R. Holmes, S.-O. Holmgren, D. Holthuizen, P.F. Honore, J.E. Hooper, M. Houlden, J. Hrubec, P.O. Hulth, K. Hultqvist, D. Husson, P. Ioannou, D. Isenhower, P.-S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, D. Johnson, M. Jonker, L. Jonsson, P. Juillot, G. Kalkanis, G. Kalmus, F. Kapusta, M. Karlsson, S. Katsanevas, E.C. Katsoufis, R. Keranen, J. Kesteman, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, W. Klempt, A. Klovning, P. Kluit, J.H. Koehne, B. Koene, P. Kokkinias, M. Kopf, M. Koratzinos, K. Korcyl, A.V. Korytov, V. Kostiukhin, C. Kourkoumelis, P.H. Kramer, T. Kreuzberger, J. Krolikowski, I. Kronkvist, J. Krstic, U. Kruener-Marquis, W. Krupinski, W. Kucewicz, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, R. Leitner, Y. Lemoigne, J. Lemonne, G. Lenzen, V. Lepeltier, A. Letessier-Selvon, E. Lieb, D. Liko, E. Lillethun, J. Lindgren, R. Lindner, A. Lipniacka, I. Lippi, R. Llosa, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez-Fernandez, M.A.Lopez Aguera, M. Los, D. Loukas, A. Lounis, J.J. Lozano, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maltezos, F. Mandl, J. Marco, M. Margoni, J.-C. Marin, A. Markou, T. Maron, S. Marti, L. Mathis, F. Matorras, C. Matteuzzi, G. Matthiae, M. Matveev, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, E. Menichetti, G. Meola, C. Meroni, W.T. Meyer, M. Michelotto, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, W.J. Murray, B. Muryn, G. Myatt, F. Naraghi, F.L. Navarria, P. Negri, B.S. Nielsen, B. Nijjhar, V. Nikolaenko, V. Obraztsov, K. Oesterberg, A.G. Olshevski, R. Orava, A. Ostankov, A. Ouraou, M. Paganoni, R. Pain, H. Palka, T. Papadopoulou, L. Pape, A. Passeri, M. Pegoraro, J. Pennanen, V. Perevozshikov, M. Pernicka, A. Perrotta, F. Pierre, M. Pimenta, O. Pingot, M.E. Pol, G. Polok, P. Poropat, P. Privitera, A. Pullia, D. Radojicic, S. Ragazzi, P.N. Ratoff, A.L. Read, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, M. Richardson, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, I. Roncagliolo, P. Ronchese, C. Ronnqvist, E.I. Rosenberg, U. Rossi, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, G. Sajot, J. Salt, E. Sanchez, J. Sanchez, M. Sannino, M. Schaeffer, S. Schael, H. Schneider, M.A.E. Schyns, F. Scuri, A.M. Segar, R. Sekulin, M. Sessa, G. Sette, R. Seufert, R.C. Shellard, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sissakian, T.B. Skaali, G. Skjevling, G. Smadja, N. Smirnov, G.R. Smith, R. Sosnowski, T.S. Spassoff, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, S. Tavernier, G.E. Theodosiou, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, O. Toker, E. Torassa, L. Tortora, M.T. Trainor, D. Treille, U. Trevisan, W. Trischuk, G. Tristram, C. Troncon, A. Tsirou, E.N. Tsyganov, M. Turala, R. Turchetta, M.-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, S. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, C. Vander Velde, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, J. Varela, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, L.S. Vertogradov, D. Vilanova, L. Vitale, E. Vlasov, S. Vlassopoulos, A.S. Vodopyanov, M. Vollmer, S. Volponi, G. Voulgaris, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Wayne, A. Wehr, M. Weierstall, P. Weilhammer, J. Werner, A.M. Wetherell, J.H. Wickens, J. Wikne, G.R. Wilkinson, W.S.C. Williams, M. Winter, D. Wormald, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, G. Zhang, N.I. Zimin, M. Zito, R. Zitoun, R.Zukanovich Funchal, G. Zumerle, J. Zuniga, 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 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 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), 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), 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), 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)-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), Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, 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: Physics, Quark, Semileptonic decay, Nuclear and High Energy Physics, Particle physics, Muon, media_common.quotation_subject, Hadron, Electroweak interaction, High Energy Physics::Phenomenology, Weinberg angle, Bottom quark, Asymmetry, Nuclear physics, Physique des particules élémentaires, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Física nuclear, digital document, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, media_common
Abstract: 0, info:eu-repo/semantics/published
Published: 1992

37. A measurement of the lifetime of the tau lepton

Author: P. Abreu, W. Adam, F. Adami, T. Adye, T. Akesson, G.D. Alekseev, P. Allen, S. Almehed, S.J. Alvsvaag, U. Amaldi, E. Anassontzis, P. Antilogus, W.-D. Apel, R.-J. Apsimon, B. Åsman, P. Astier, J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, D.Y. Bardin, A. Baroncelli, O. Barring, W. Bartl, M. Battaglia, M.J. Bates, M. Baubillier, K.-H. Becks, C.J. Beeston, M. Begalli, P. Beilliere, Yu. Belokopytov, P. Beltran, D. Benedic, J.M. Benlloch, M. Berggren, D. Bertrand, F. Bianchi, J.H. Bibby, M.S. Bilenky, P. Billoir, J. Bjarne, D. Bloch, S. Blyth, P.N. Bogolubov, T. Bolognese, M. Bonapart, M. Bonesini, W. Bonivento, P.S.L. Booth, M. Boratav, P. Borgeaud, G. Borisov, H. Borner, C. Bosio, B. Bostjancic, O. Botner, B. Bouquet, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, C. Bricman, R.C.A. Brown, N. Brummer, J.-M. Brunet, L. Bugge, T. Buran, H. Burmeister, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, J.-E. Campagne, A. Campion, T. Camporesi, V. Canale, F. Cao, F. Carena, L. Carroll, C. Caso, E. Castelli, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, A. Chan, P. Charpentier, P. Checchia, G.A. Chelkov, L. Chevalier, P. Chliapnikov, V. Chorowicz, R. Cirio, M.P. Clara, P. Collins, J.L. Contreras, R. Contri, G. Cosme, F. Couchot, H.B. Crawley, D. Crennell, G. Crosetti, N. Crosland, M. Crozon, J. Cuevas Maestro, S. Czellar, S. Dagoret, E. Dahl-Jensen, B. Dalmagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, P.D. Dauncey, M. Davenport, P. David, A. De Angelis, M. De Beer, H. De Boeck, W. De Boer, C. De Clercq, M.D.M. De Fez Laso, N. De Groot, C. De La Vaissiere, B. De Lotto, A. De Min, C. Defoix, D. Delikaris, S. Delorme, P. Delpierre, N. Demaria, J. Derkaoui, L. Di Ciaccio, H. Dijkstra, F. Djama, J. Dolbeau, M. Donszelmann, K. Doroba, M. Dracos, J. Drees, M. Dris, Y. Dufour, W. Dulinski, L.-O. Eek, P.A.-M. Eerola, T. Ekelof, G. Ekspong, A. Elliot Peisert, J.-P. Engel, V. Falaleev, D. Fassouliotis, M. Fernandez Alonso, A. Ferrer, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, P. Folegati, F. Fontanelli, K.A.J. Forbes, H. Forsbach, B. Franek, P. Frenkiel, D.C. Fries, A.G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, K. Furnival, H. Furstenau, J. Fuster, J.M. Gago, G. Galeazzi, D. Gamba, C. Garcia, J. Garcia, U. Gasparini, P. Gavillet, E.N. Gazos, J.-P. Gerber, P. Giacomelli, K.-W. Glitza, R. Gokieli, V.M. Golovatyuk, J.J. Gomez Y Cadenas, A. Goobar, G. Gopal, M. Gorski, V. Gracco, A. Grant, F. Grard, E. Graziani, M.-H. Gros, G. Grosdidier, E. Gross, B. Grossetete, S. Gumenyuk, J. Guy, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G. Hamel De Monchenault, F.J. Harris, B.W. Heck, T. Henkes, I. Herbst, J.J. Hernandez, P. Herquet, H. Herr, I. Hietanen, C.O. Higgins, E. Higon, H.J. Hilke, S.D. Hodgson, T. Hofmokl, R. Holmes, S.-O. Holmgren, D. Holthuizen, P.F. Honore, J.E. Hooper, R. Horisberger, M. Houlden, J. Hrubec, P.O. Hulth, K. Hultqvist, D. Husson, B.D. Hyams, P. Ioannou, D. Isenhower, P.-S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, D. Johnson, M. Jonker, L. Jonsson, P. Juillot, G. Kalkanis, G. Kalmus, G. Kantardjian, F. Kapusta, S. Katsanevas, E.C. Katsoufis, R. Keranen, J. Kesteman, B.A. Khomenko, N.N. Khovanski, B. King, N.J. Kjaer, H. Klein, W. Klempt, A. Klovning, P. Kluit, J.H. Koehne, B. Koene, P. Kokkinias, M. Kopf, M. Koratzinos, K. Korcyl, A.V. Korytov, B. Korzen, V. Kostukhin, C. Kourkoumelis, T. Kreuzberger, J. Krolikowski, U. Kruener-Marquis, W. Krupinski, W. Kucewicz, K. Kurvinen, C. Lacasta, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, J.-P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, J. Lemonne, G. Lenzen, V. Lepeltier, A. Letessier-Selvon, D. Liko, E. Lieb, E. Lillethun, J. Lindgren, A. Lipniacka, I. Lippi, R. Llosa, B. Loerstad, M. Lokajicek, J.G. Loken, M.A. Lopez Aguera, A. Lopez-Fernandez, M. Los, D. Loukas, A. Lounis, J.J. Lozano, R. Lucock, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maltezos, S. Maltezos, F. Mandl, J. Marco, M. Margoni, J.-C. Marin, A. Markou, S. Marti, L. Mathis, F. Matorras, C. Matteuzzi, G. Matthiae, M. Matveev, M. Mazzucato, M. Mc Cubbin, R. Mc Nulty, E. Menichetti, G. Meola, C. Meroni, W.T. Meyer, M. Michelotto, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, H. Muller, W.J. Murray, G. Myatt, F. Naraghi, U. Nau-Korzen, F.L. Navarria, P. Negri, B.S. Nielsen, B. Nijjhar, V. Nikolaenko, V. Obraztsov, A.G. Olshevski, R. Orava, A. Ostankov, A. Ouraou, R. Pain, H. Palka, T. Papadopoulou, L. Pape, A. Passeri, M. Pegoraro, V. Perevozchikov, M. Pernicka, A. Perrotta, F. Pierre, M. Pimenta, O. Pingot, A. Pinsent, M.E. Pol, G. Polok, P. Poropat, P. Privitera, A. Pullia, J. Pyyhtia, D. Radojicic, S. Ragazzi, P.N. Ratoff, A.L. Read, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, M. Richardson, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, I. Roncagliolo, P. Ronchese, C. Ronnqvist, E.I. Rosenberg, U. Rossi, E. Rosso, P. Roudeau, T. Rovelli, W. Ruckstuhl, V. Ruhlmann, A. Ruiz, K. Rybicki, H. Saarikko, Y. Sacquin, J. Salt, E. Sanchez, J. Sanchez, M. Sannino, M. Schaeffer, S. Schael, H. Schneider, M.A.E. Schyns, F. Scuri, A.M. Segar, R. Sekulin, M. Sessa, G. Sette, R. Seufert, R.C. Shellard, P. Siegrist, S. Simonetti, F. Simonetto, A.N. Sissakian, T.B. Skaali, G. Skjevling, G. Smadja, G.R. Smith, N. Smirnov, R. Sosnowski, T.S. Spassoff, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, C.J. Stubenrauch, M. Szczekowski, M. Szeptycka, P. Szymanski, T. Tabarelli, S. Tavernier, G.E. Theodosiou, A. Tilquin, J. Timmermans, V.G. Timofeev, L.G. Tkatchev, T. Todorov, D.Z. Toet, L. Tortora, M.T. Trainor, D. Treille, U. Trevisan, W. Trischuk, G. Tristam, C. Troncon, A. Tsirou, E.N. Tsyganov, M. Turala, R. Turchetta, M.-L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, B. Ueberschaer, S. Ueberschaer, O. Ullaland, V.A. Uvarov, G. Valenti, E. Vallazza, J.A. Valls Ferrer, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, N. Van Eijndhoven, C. Vander Velde, J. Varela, P. Vaz, G. Vegni, L. Ventura, W. Venus, F. Verbeure, L.S. Vertogradov, L. Vibert, D. Vilanova, E.V. Vlasov, A.S. Vodopyanov, M. Vollmer, S. Volponi, G. Voulgaris, M. Voutilainen, V. Vrba, H. Wahlen, C. Walck, F. Waldner, M. Wayne, P. Weilhammer, J. Werner, A.M. Wetherell, J.H. Wickens, J. Wikne, G.R. Wilkinson, W.S.C. Williams, M. Winter, D. Wormald, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, G. Zhang, N.I. Zimin, M. Zito, R. Zitoun, R. Zukanovich Funchal, G. Zumerle, J. Zuniga, Flores, Sylvie, 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), 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), 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), Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, 01 natural sciences, 7. Clean energy, DETECTOR, Particle Physics - Experiment
Abstract: The lifetime of the tau lepton has been measured by two independent methods using a silicon microvertex detector installed in the DELPHI detector. The signed impact parameter distribution of the one prong decays yielded a lifetime of ττ = 321 ± 36 (stat.) ± 16 (syst.) fs, while the decay length distribution of three prong decays gave the result ττ = 310 ± 31 (stat.) ± 9 (syst.) fs. The final value of the combined result was ττ = 314 ± 25 fs. The ratio of the Fermi coupling constant from tau decay relative to that from muon decay was found to be 0.95 ± 0.04, compatible with the hypothesis of lepton universality., 0, info:eu-repo/semantics/published
Published: 1991

38. Study of correlation effects in high-multiplicity proton-proton reactions at 12 and 24 GeV/c

Author: N. Schmitz, B. Hellwig, P. Freund, B. Schröder, D. Lüers, U. Idschok, H. Fesefeldt, J.W. Lamsa, Christoph Geich-Gimbel, Volker Blobel, D. Mönkemeyer, and B.M. Schwarzschild
Subjects: Nuclear physics, Physics, Correlation, Nuclear and High Energy Physics, Particle physics, Proton, Meson, Rapidity, Kinematics, Multiplicity (chemistry), High multiplicity, Spectral line
Abstract: In this paper we study correlations in multiparticle final states from pp interactions at 12 and 24 GeV/ c . In an attempt to distinguish true dynamical correlations from the consequences of kinematics together with P T damping and the leading-particle effect, we compare the data with an independent-emission model which reproduces the single-particle spectra and also with a model that simulates a fragmentation mechanism. We investigate the forward-backward particle configurations and in particular the multiplicity imbalance and charge transfer, defining forward-backward by the largest rapidity gap as well as simply by c.m.s. hemispheres. We also study clustering by looking at distributions of the dispersions in longitudinal rapidity. From the comparison of the data with the models we find clear evidence for dynamical correlations of a sort one would expect from fragmentation-type mechanisms. We also find indications of non-fragmentation formation of neutral meson clusters.
Published: 1975

39. Study of the low-mass diffractive system produced in pp collisions at 12 and 24 GeV/c

Author: R. Rödel, K. von Holt, U. Idschok, H. Fesefeldt, W. Treffeisen, Volker Blobel, A. Eskreys, N. Schmitz, J.W. Lamsa, and H. Franz
Subjects: Diffraction, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle decay, Particle physics, Mass spectrum, Virtual particle, Proton emission, Multiplicity (chemistry), Low Mass, Dissociation (chemistry)
Abstract: We present an analysis of the decay of the low-mass diffractive system X produced in the reaction pp → p + X at 12 and 24 GeV/c. The various decay channels of the system have been separated; the decay multiplicity distribution is investigated and compared with the expectations of a two-step picture of diffraction dissociation. A comparison of virtual P p with on-shell γp and pp processes is discussed.
Published: 1975

40. Observation of vector meson production in inclusive pp reactions

Author: U. Idschok, D. Roedel, J.W. Lamsa, H.F. Neumann, Volker Blobel, D. Mönkemeyer, B. Schwarz, H. Fesefeldt, F. Selonke, P. Söding, B. Hellwig, W. Schrankel, and H. Franz
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Pair production, Transverse momentum, High Energy Physics::Experiment, Rapidity, Vector meson, Nuclear Experiment, Polarization (waves), Charged particle, Lepton
Abstract: We have measured cross sections, rapidity and transverse momentum distributions, and vector meson polarization for the reactions pp→ ϱ o +anything, pp→ ω +charged particles, and pp → K ∗± + anything at incident laboratory momenta of 12 and 24 GeV/ c . We discuss various consequences of our results as well as possible connections with lepton pair production.
Published: 1974

41. Double-Regge-Pole Analysis ofπ+p→π+ϱ0pat13.1GeVc

Author: C.R. Ezell, J. A. Gaidos, J.W. Lamsa, and R.B. Willmann
Subjects: Physics, Particle physics
Published: 1970

42. Production of K+K− and p pairs in four-body reactions at 13.1 GeV/c

Author: J. A. Gaidos, C.R. Ezell, T.A. Mulera, R.B. Willmann, and J.W. Lamsa
Subjects: Momentum, Nuclear physics, Physics, Nuclear and High Energy Physics, Pair production, Meson, Antiproton, Production (computer science)
Abstract: Data in the channels π + p → π + p K + K − and ar π + p p p at 13.1 GeV/c are presented; the Δ ++ K+K− and p K+K∗ (890) subsamples are discussed in terms of adouble-Regge model. No resonance structure at M( p p p ) = 3.755 GeV is observed.
Published: 1971

43. Double-Regge pole analysis of π+p → π+π−Δ++ at 13.1 GeV/c

Author: J. A. Gaidos, R.B. Willmann, J.W. Lamsa, and C.R. Ezell
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Amplitude, Quantum electrodynamics
Abstract: A double-Regge model is applied to the reaction π+p → π+π−Δ++ at 13.1 GeV/c. A good description of the data is given in terms of two amplitudes involving Pomeranchuk/π and Pomeranchuk/Δ exchanges.
Published: 1970

44. Observation ofN*(1720)Decay toΔ(1236)πfromπ+pInteractions at 13.1 GeV

Author: J. A. Gaidos, J.W. Lamsa, C.R. Ezell, and R.B. Willmann
Subjects: Physics, General Physics and Astronomy
Published: 1970

45. Exchange model analysis of the reactions pp → pnπ+ and pp → ppπ+π− at 12 GeV/c

Author: P. Kobe, B. Nellen, J. Seyerlein, H. Franz, Volker Blobel, P. Freund, N. Schmitz, U. Idschok, H. Fesefeldt, J. Lowsky, F. Selonke, W. Isenbeck, W. Schrankel, H. Mück, N. Stief, B. Hellwig, D. Mönkemeyer, G.W. Brandenburg, and J.W. Lamsa
Subjects: Physics, Nuclear and High Energy Physics, High Energy Physics::Phenomenology, Nuclear Theory, Invariant (mathematics), Exchange model, Mathematical physics
Abstract: New data are presented for the reactions pp → pnπ+ and pp → ppπ+π− at 12 GeV/c. An attempt is made to understand various features of the data in terms of three one-pion-exchange models, namely the elementary one-pion-exchange (OPE) model in the version of Wolf, a Reggeized pion-exchange (RPE) model and the double-Regge-pole (DRP) model in the version of Berger. The predictions from these models are compared with several distributions of invariant masses, mometum-transfers, Treiman-Yang and Gottfried-Jackson angles. The Regge models are able to describe the gross features of these distributions better than the OPE model, although they are not capable of reproducing all details.
Published: 1973

46. Reactionπ+p→ρ0Δ++at 13.1 GeV/c

Author: F. T. Meiere, C.R. Ezell, R.B. Willmann, J.W. Lamsa, and J. A. Gaidos
Subjects: Nuclear physics, Physics
Published: 1970

47. Analysis of the reaction pp → p(ππ)0 p, and the question of double pomeron exchange in high-energy production processes

Author: B. Wessels, Volker Blobel, B. Hellwig, P. Söding, J.W. Lamsa, H. Fesefeldt, F. Selonke, N. Schmitz, H. Franz, W. Schrankel, D. Mönkemeyer, U. Idschok, and P. Kobe
Subjects: Momentum, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, High energy, Pomeron, Pion, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment
Abstract: A low-mass S-wave ( ππ ) 0 enhancement is observed in the reaction pp → p ( ππ ) 0 p at 12 and 24 GeV/ c incident momentum. The mechanism for producing these low-mass pion pairs is investigated, and it is shown that double pomeron exchange can contribute at most 5% to their production cross section at 24 GeV/ c .
Published: 1973

48. The reactionπ+p→foΔ++ at 13.1 GeV/c

Author: R.B. Willmann, J.W. Lamsa, J. A. Gaidos, and C.R. Ezell
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, High Energy Physics::Phenomenology, Resonance, Elementary particle, Nuclear physics, Pion, High Energy Physics::Experiment, Absorption (chemistry), Nuclear Experiment, Nucleon, Exchange model
Abstract: Data for the reactionπ+p→foΔ++ at 13.1 GeV/c is presented and discussed within a Reggeized pion exchange model with absorption.
Published: 1971

49. Test of helicity conservation and spin-parity analysis of the N∗(1700)

Author: N. M. Cason, C.R. Ezell, W. D. Shephard, R.B. Willmann, V. P. Kenney, N. N. Biswas, P.H. Smith, J.W. Lamsa, P.T. Go, and J. A. Gaidos
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Conservation law, Particle physics, Angular distribution, Branching fraction, Parity (physics), Neutron, Helicity
Abstract: The diffractively produced low-mass π+π−p system isstudied in the reaction π±p → π±π+π−p. We observe strong N∗(1700) production and determine the branching fraction to π−Δ++ to be 65 ± 15%. A spin-parity analysis (assuming J 7 2 ) yields J P = 5 2 + for the N∗(1700). The study of the decay angular distribution of the N∗(1700) indicates that helicity is conserved in the t-channel rather than in the s-channel.
Published: 1972

50. Spin-parity analysis of the low-mass 3π system in the reaction π+p → π+π+π−p at 13.1 GeV/c

Author: J. A. Gaidos, R.B. Willmann, J.W. Lamsa, and C.R. Ezell
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Effective mass (solid-state physics), Amplitude, Partial wave analysis, Mass spectrum, Parity (physics), Atomic physics, Low Mass
Abstract: A spin-parity analysis of the diffractively produced low-mass 3 π system is presented; the results are given as a function of the 3 π effective mass. Neither the 3 π mass spectrum nor its J P = 1 + component give evidence for a narrow A 1 resonance (width ⪅ 200 MeV). The results of the spin-parity decomposition are compared with predictions from a partial wave analysis of the Reggeized Deck amplitude.
Published: 1972

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