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201. Determination of |Vcb| from the semileptonic decay B0 → D*- ℓ+ν

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Alemany, R. Allport, P.P. Almehed, S. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Apel, W-D. Arnoud, Y. Åsman, B. Augustin, J-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Barbi, M. Barbiellini, G. Bardin, D.Y. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bloch, D. Blume, M. Blyth, S. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bosworth, S. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenke, T. Brenner, R.A. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschmann, P. Buys, A. Cabrera, S. Caccia, M. Calvi, M. Camacho Rozas, A.J. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Chapkin, M. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chen, M. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Deghorain, A. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boer, W. De Brabandere, S. De Clercq, C. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Dufour, Y. Edsall, D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Elsing, M. Engel, J-P. Ershaidat, N. Erzen, B. Espirito Santo, M. Falk, E. Fassouliotis, D. Feindt, M. Fenyuk, A. Ferrer, A. Filippas, T.A. Firestone, A. Fischer, P.-A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gibbs, M. Gokieli, R. Golob, B. Gopal, G. Gorn, L. Gorski, M. Gouz, Yu. Gracco, V. Graziani, E. Grosdidier, G. Grzelak, K. Gumenyuk, S. Gunnarsson, P. Gunther, M. Guy, J. Hahn, F. Hahn, S. Hajduk, Z. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S-O. Holt, P.J. Holthuizen, D. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Jonsson, P. Joram, C. Juillot, P. Kaiser, M. Kapusta, F. Karafasoulis, K. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khokhlov, Yu. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koene, B. Kokkinias, P. Koratzinos, M. Korcyl, K. Kourkoumelis, C. Kouznetsov, O. Kramer, P.-H. Krammer, M. Kreuter, C. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kurvinen, K. Lacasta, C. Laktineh, I. Lamblot, S. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Last, I. Laugier, J-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopez, J.M. Loukas, D. Lutz, P. Lyons, L. Maehlum, G. Maio, A. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti I Garcia, S. Masik, J. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Medbo, J. Merk, M. Meroni, C. Meyer, S. Meyer, W.T. Michelotto, M. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Mundim, L.M. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nieuwenhuizen, M. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Novak, M. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Palka, H. Papadopoulou, Th.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Passeri, A. Pegoraro, M. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Petrovyck, M. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Pindo, M. Plaszczynski, S. Podobrin, O. Po, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Rybicki, K. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schimmelpfennig, M. Schneider, H. Schwickerath, U. Schyns, M.A.E. Sciolla, G. Scuri, F. Seager, P. Sedykh, Y. Segar, M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Solovianov, O. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stanescu, C. Stapnes, S. Stavitski, I. Stichelbaut, F. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tavernet, J.P. Tchikilev, O. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M-L. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vrba, V. Wahlen, H. Walck, C. Weierstall, M. Weilhammer, P. Weiser, C. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Abstract: Semileptonic decays B → D*- ℓ+νX were selected from a sample of 3.1 million hadronic Z decays collected by the DELPHI detector at LEP. A topological search for semileptonic B decays to resonant and non-resonant D*- π+ states was performed and the ratio of the branching fractions: Br(B → D*- ℓ+νX)/Br(B → D*- ℓ+νX) + Br(B0 → D*- ℓ+ν) = 0.19 ± 0.10(stat) ± 0.06(syst) was determined. Taking into account this contribution, the differential decay width of B0 → D*- ℓ+ν was measured as a function of the momentum transfer from the B to the D*- in two separate analyses, using exclusive and inclusive methods of D*- ℓ+ reconstruction. The distributions were fitted over the full momentum transfer range to extract the product of |V cb| times the normalization of the decay form factor F(q max2): F(qmax2)|Vcb| = (35.4 ± 1.9(stat) ± 2.4(syst)) • 10-3. The value of |Vcb| was computed using theoretical calculations of F(q max2), giving: |Vcb| = (38.9 ± 2.0(stat) ± 2.6(syst) ± 1.7(theory)) • 10-3. The total branching fraction Br(B0 → D*- ℓ+ν) was determined to be: Br(B0 → D*- ℓ+ν) = (5.52 ± 0.17(stat) ± 0.68(syst))%.
Published: 1996

202. Study of rare b decays with the DELPHI detector at LEP

Author: Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, Roy, Alekseev, G D, Alemany, R, Allport, P P, Almehed, S, Amaldi, Ugo, Amato, S, Andreazza, A, Andrieux, M L, Antilogus, P, Apel, W D, Arnoud, Y, Åsman, B, Augustin, J E, Augustinus, A, Baillon, Paul, Bambade, P, Barão, F, Barate, R, Barbi, M S, Bardin, Dimitri Yuri, Baroncelli, A, Bärring, O, Barrio, J A, Bartl, Walter, Bates, M J, Battaglia, Marco, Baubillier, M, Baudot, J, Becks, K H, Begalli, M, Beillière, P, Belokopytov, Yu A, Benvenuti, Alberto C, Berggren, M, Bertini, D, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, S M, Billoir, P, Bloch, D, Blume, M, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P S L, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, T J V, Bozzo, M, Branchini, P, Brand, K D, Brenke, T, Brenner, R A, Bricman, C, Brown, R C A, Brückman, P, Brunet, J M, Bugge, L, Buran, T, Burgsmüller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, M, Calvi, M, Camacho-Rozas, A J, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, Carlo, Castillo-Gimenez, M V, Cattai, A, Cavallo, F R, Chabaud, V, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G A, Chen, M, Chierici, R, Chliapnikov, P V, Chochula, P, Chorowicz, V, Chudoba, J, Cindro, V, Collins, P, Contreras, J L, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, H B, Crennell, D J, Crosetti, G, Cuevas-Maestro, J, Czellar, S, Dahl-Jensen, Erik, Dahm, J, D'Almagne, B, Dam, M, Damgaard, G, Dauncey, P D, Davenport, Martyn, Da Silva, W, Defoix, C, Deghorain, A, Della Ricca, G, Delpierre, P A, Demaria, N, De Angelis, A, de Boer, Wim, De Brabandere, S, De Clercq, C, La Vaissière, C de, De Lotto, B, De Min, A, De Paula, L S, De Saint-Jean, C, Dijkstra, H, Di Ciaccio, Lucia, Djama, F, Dolbeau, J, Dönszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, K A, Dris, M, Durand, J D, Edsall, D M, Ehret, R, Eigen, G, Ekelöf, T J C, Ekspong, Gösta, Elsing, M, Engel, J P, Erzen, B, Espirito-Santo, M C, Falk, E, Fassouliotis, D, Feindt, Michael, Fenyuk, A, Ferrer, A, Fichet, S, Filippas-Tassos, A, Firestone, A, Fischer, P A, Föth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B J, Frenkiel, P, Fries, D E C, Frodesen, A G, Frühwirth, R, Fulda-Quenzer, F, Fuster, J A, Galloni, A, Gamba, D, Gandelman, M, García, C, García, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, E N, Gelé, D, Gerber, J P, Gibbs, M, Gokieli, R, Golob, B, Gopal, Gian P, Gorn, L, Górski, M, Guz, Yu, Gracco, Valerio, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S A, Gunnarsson, P, Günther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, F J, Hedberg, V, Henriques, R P, Hernández, J J, Herquet, P, Herr, H, Hessing, T L, Higón, E, Hilke, Hans Jürgen, Hill, T S, Holmgren, S O, Holt, P J, Holthuizen, D J, Hoorelbeke, S, Houlden, M A, Hrubec, Josef, Huet, K, Hultqvist, K, Jackson, J N, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E K, Jönsson, L B, Jönsson, P E, Joram, Christian, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, E C, Keränen, R, Khokhlov, Yu A, Khomenko, B A, Khovanskii, N N, King, B J, Kjaer, N J, Klein, H, Klovning, A, Kluit, P M, Köne, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kostyukhin, V, Kourkoumelis, C, Kuznetsov, O, Kramer, P H, Krammer, Manfred, Kreuter, C, Kronkvist, I J, Krumshtein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K L, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, J, Lanceri, L, Lane, D W, Langefeld, P, Last, I, Laugier, J P, Lauhakangas, R, Leser, G, Ledroit, F, Lefébure, V, Legan, C K, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, Georg, Lepeltier, V, Lesiak, T, Libby, J, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Lörstad, B, Loken, J G, López, J M, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J N, Maehlum, G, Maio, A, Malychev, V, Marco, J, Marco, R P, Maréchal, B, Margoni, M, Marin, J C, Mariotti, C, Markou, A, Maron, T, Martínez-Rivero, C, Martínez-Vidal, F, Martí i García, S, Masik, J, Matorras, F, Matteuzzi, C, Matthiae, Giorgio, Mazzucato, M, McCubbin, M L, McKay, R, McNulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, W T, Myagkov, A, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Winfried A, Mjörnmark, U, Moa, T, Møller, R, Mönig, K, Monge, M R, Morettini, P, Müller, H, Mundim, L M, Murray, W J, Muryn, B, Myatt, Gerald, Naraghi, F, Navarria, Francesco Luigi, Navas, S, Nawrocki, K, Negri, P, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, B S, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, Ainsley, Novák, M, Oberschulte-Beckmann, W, Obraztsov, V F, Olshevskii, A G, Onofre, A, Orava, Risto, Österberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pagès, P, Palka, H, Papadopoulou, T D, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, Manfred, Perrotta, A, Petridou, C, Petrolini, A, Petrovykh, M, Phillips, H T, Piana, G, Pierre, F, Pimenta, M, Pindo, M, Plaszczynski, S, Podobrin, O, Pol, M E, Polok, G, Poropat, P, Pozdnyakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, Antonio, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P N, Read, A L, Reale, M, Rebecchi, P, Redaelli, N G, Regler, Meinhard, Reid, D, Renton, P B, Resvanis, L K, Richard, F, Richardson, J, Rídky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, E I, Rosso, E, Roudeau, Patrick, Rovelli, T, Rückstuhl, W, Ruhlmann-Kleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Yu, Sadovskii, A, Sahr, O, Sajot, G, Salt, J, Sánchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, M A E, Sciolla, G, Scuri, F, Seager, P, Sedykh, Yu, Segar, A M, Seitz, A, Sekulin, R L, Shellard, R C, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sissakian, A N, Sitár, B, Skaali, T B, Smadja, G, Smirnov, N, Smirnova, O G, Smith, G R, Sokolov, A, Solovyanov, O, Sosnowski, R, Souza-Santos, D, Spassoff, Tz, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, Steinar, Stavitski, I, Stevenson, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli de Fatis, T, Tavernet, J P, Chikilev, O G, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, L G, Todorov, T, Todorova, S, Toet, D Z, Tomaradze, A G, Tomé, B, Tonazzo, A, Tortora, L, Tranströmer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A L, Turluer, M L, Tyapkin, I A, Tyndel, M, Tzamarias, S, Überschär, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Van der Velde, C, van Apeldoorn, G W, van Dam, P, Van Doninck, W K, Van Eldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W A, Verbeure, F, Verlato, M, Vertogradov, L S, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, A S, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weierstall, M, Weilhammer, Peter, Weiser, C, Wetherell, Alan M, Wicke, D, Wickens, J H, Wielers, M, Wilkinson, G R, Williams, W S C, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yushchenko, O P, Zach, F, Zaitsev, A, Zalewska-Bak, A, Zalewski, Piotr, Zavrtanik, D, Zevgolatakos, E, Zimin, N I, Zito, M, Zontar, D, Zucchelli, G C, Zumerle, G, UCL - SST/IRMP - Institut de recherche en mathématique et physique, 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 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), 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, LEP (IHEF, IoP, FNWI), 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 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), 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), Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, 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), Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Quark, charmless decay, Particle physics, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Hadron, DELPHI, rare decay of beauty particles, 01 natural sciences, Nuclear physics, S-GAMMA%22">B->S-GAMMA, SEARCH, ASYMMETRIES, STANDARD, MESONS, 0103 physical sciences, Radiative transfer, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Physics, Gauge boson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Detector, Fermion, LARGE ELECTRON POSITRON COLLIDER, PARTICLE PHYSICS, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Rare decays of beauty particles were studied in several charmless modes using the data collected with the DELPHI detector at LEP from 1991 to 1994. These decays are mediated by both tree level $b \rightarrow u$ and one-loop penguin $b \rightarrow s$, $d$ transitions. Evidence for charmless $B$ decays was obtained in two body hadronic modes. The branching ratios of $B^{0}_{d,s}$ to $\pi^+ \pi^-$ or $K^+ \pi^-$ and $B^{-}_{u}$ to $\rho^0 \pi^-$ or $K^{*0} \pi^-$ were found to be $(2.8 ^{+1.5}_{-1.0} \pm 0.2) \times 10^{-5}$ and $(1.7 ^{+1.2}_{-0.8} \pm 0.2) \times 10^{-4}$ respectively. The fraction of these decays with a charged kaon in the final state that is not from the spectator $s$ quark, was measured to be $0.58 \pm 0.18$. Upper limits were set at 90\% confidence level on the branching ratios %for other two body modes including the $\Lambda_b^0\to pK^-$ decay and for three and four body charmless hadronic decays in the range of \mbox{$(1 - 3)\times10^{-4}$}, for inclusive radiative $b \rightarrow s \gamma$ decays at $5.4\times10^{-4}$, for the exclusive radiative decays $B_{d}^{0} \rightarrow K^*(892)^0\gamma$ and $B_{s}^{0} \rightarrow \phi(1020) \gamma$ at $2.1\times10^{-4}$ and $7.0\times10^{-4}$ respectively, and for dineutrino decays, $b \rightarrow s \nu \bar \nu$, in the exclusive channels $B_{d}^{0} \rightarrow K^*(892)^0 \nu \bar \nu$ and $B_{s}^{0} \rightarrow \phi(1020) \nu \bar \nu$ at 1.0 $\times$ 10$^{-3}$ and 5.4 $\times$ 10$^{-3}$ respectively. The limits on dineutrino decays constrain theories with a new $U(1)$ gauge boson coupling predominantly to the third family of fermions.
Published: 1996

203. Search for pair production of heavy objects in 4-jet events at sqrt {s}$=130-136 GeV

Author: Adam, W., Adye, T., Agasi, E., Ajinenko, I., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Barbiellini, G., Bardin, D. Y., Baroncelli, A., Baring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Cowell, J. H., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Didiodato, A., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Green, C., Grefrath, A., Gris, P., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johnsson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klapp, O., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Mahon, J. R., Maio, A., T. G. M., Malychev, V., Mandi, F., Marco, R., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Martinezrivero, C., Martinezvidal, F., S. M. I., Masik, J., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Nulty, R. M., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Muenich, K., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Niewenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, Paolo, Roos, L., Rosenberg, E. J., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siccama, I., Siegrist, P., Silvestro, R., Simonetti, S., Simonetto, Franco, Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sokolov, A., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, Z. I., Zito, M., Zontar, D., Zucchelli, G. C., Zumerle, Gianni, LEP (IHEF, IoP, FNWI), BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, 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 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), 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, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, 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 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), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Aleph, Physics and Astronomy (miscellaneous), ENERGIES, Electron–positron annihilation, Hadron, HIGGS BOSONS, Jet (particle physics), Partícules (Física nuclear), DECAYS, Nuclear physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Detectors de radiació, Boson, DELPHI, Physics, High Energy Physics::Phenomenology, Supersymmetry, LARGE ELECTRON POSITRON COLLIDER, Pair production, PARTICLE PHYSICS, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Results are presented of a search for pair production of heavy objects decaying into four hadronic jets, as expected for example from associated or pair production of MSSM Higgs bosons, hA or H$^+$H$^-$, using a data sample of $5.9\,$pb$^{-1}$ of $e^+ e^-$ collisions at $\sqrt{s}=130$-$136\,{\mathrm {GeV}}$ collected with the DELPHI detector at LEP in November 1995. The data and expectations from standard processes agree after four-jet selections. An analysis based on $b$-tagging finds no hA candidate with high mass. A study optimized to search for H$^+$H$^-$ events with mass in the 40-50$\,{\mathrm{GeV}}/c^2$ range also finds no candidate. Finally a comparison is made with a recent ALEPH analysis which found an excess of four-jet events with high multiplicity and high mass. Such a signal is not observed in the DELPHI data, although a slight excess in the mass region around $105\,{\mathrm{GeV}}/c^2$ is seen.
Published: 1996

204. Performance of the DELPHI detector

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A and Andrieux, ML Antilogus, P Apel, WD Arnoud, Y Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barate, R Barbiellini, G Bardin, DY Baroncelli, A Barring, O Barrio, JA Bartl, W Bates, MJ and Battaglia, M Baubillier, M Baudot, J Becks, KH Begalli, M Beilliere, P Belokopytov, Y Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M Bonivento, W Booth, PSL Bosio, C Bosworth, S and Botner, O Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T Puschmann, P and Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carrilho, P Carroll, L Caso, C Gimenez, MVC and Cattai, A Cavallo, FR Cerrito, L Chabaud, V and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Dupont, F Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Ershaidat, N Erzen, B Santo, ME Falaleev, V and Falk, E Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A Filippas, TA Firestone, A Fischer, PA Foeth, H and Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP Gerdyukov, L Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y and Gracco, V Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Hallgren, A Hamacher, K Hao, W Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P and Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS and Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S and Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN and Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Karyukhin, A and Katsanevas, S Katsoufis, EC Keranen, R Khomenko, BA and Khovanski, NN King, B Kjaer, NK Klein, H Klovning, A and Kluit, P Koene, B Kokkinias, P Koratzinos, M and Kourkoumelis, C Kouznetsov, O Kramer, PH Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Legan, CK Leitner, R and Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Liko, D Lindner, R Lipniacka, A Lippi, I and Loerstad, B Loken, JG Lopez, JM Aguera, MAL Loukas, D and Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A and Malychev, V Mandl, F Marco, J Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A Marson, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and MCCubbin, M McKay, R McNulty, R Medbo, J Meroni, C and Meyer, S Meyer, WT Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Mundim, LM and Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL and Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R and Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parkes, C Parodi, F Passeri, A Pegoraro, M Peralta, L and Perevozchikov, V Pernegger, H Perrotta, A Petridou, C and Petrolini, A Petrovyck, M Phillips, HT Piana, G and Pierre, F Pimenta, M Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P and Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnov, O Smith, GR and Solovianov, O Sosnowski, R SouzaSantos, D Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stichelbaut, F Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tonazzo, A Tortora, L Transtromer, G Treille, D and Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A and Turluer, ML Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, B Ullaland, O Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Weierstall, M Weilhammer, P and Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract: DELPHI (DEtector with Lepton, Photon and Hadron Identification) is a detector for e(+)e(-) physics, designed to provide high granularity over a 4 pi solid angle, allowing an effective particle identification, It has been operating at the LEP (Large Electron-Positron) collider at CERN since 1989. This article reviews its performance.
Published: 1996

205. Search for exclusive decays of the Lambda_b baryon and measurement of its mass

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, A., Bambade, P., Barao, F., Barate, R., Barbi, M., Bardin, D. Y., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Benvenuti, A. C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Blyth, S., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P. S. L., Borisov, G., Bosio, C., Bosworth, S., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., Brillault, L., Brown, R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., Rozas, A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., Gimenez, M. V. C., Cattai, A., Cavallo, F. R., Cerrito, L., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Dufour, Y., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Ershaidat, N., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., Garcia, S. M. I., Masik, J., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Pindo, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., Schyns, M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Solovianov, O., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Erik Silvio Vallazza, Vandervelde, C., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., Williams, W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G. C., Zumerle, G., LEP (IHEF, IoP, FNWI), 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 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), 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, 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), UCL - SST/IRMP - Institut de recherche en mathématique et physique, 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 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), Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, Particle physics, Hadron, Combined use, Lambda, Tracking (particle physics), 01 natural sciences, Partícules (Física nuclear), Nuclear physics, beauty baryon, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Nuclear Experiment, Detectors de radiació, DELPHI, Physics, 010308 nuclear & particles physics, Detector, LARGE ELECTRON POSITRON COLLIDER, Baryon, particle identification, PARTICLE PHYSICS, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: A search for fully reconstructed \lb beauty baryons is performed using about 3 million Z decays collected with the DELPHI detector at LEP. The analysis relies on the combined use of the accurate tracking and of the hadron identification capabilities of DELPHI. A total of four events has been found, three in the \lc\ppm channel and one in the \lc\a1m channel over a small background. The \lb beauty baryon mass is measured to be (~ 5668 \pm 16~ ({\rm stat.}) \pm 8~({\rm syst.})~)~ \mv.
Published: 1996

206. Measurement of inclusive pi(0) production in hadronic Z(0) decays

Author: Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R and Alekseev, GD Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A Andrieux, ML Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barate, R and Barbiellini, G Bardin, DY Barker, GJ Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Belous, K Benvenuti, AC and Berggren, M Bertrand, D Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bloch, D Blume, M Blyth, S Bocci, V and Bolognese, T Bonesini, M Bonivento, W Booth, PSL and Borisov, G Bosio, C Bosworth, S Botner, O Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brillault, L and Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Caccia, M Calvi, M and Rozas, AJC Camporesi, T Canale, V Canepa, M and Cankocak, K Cao, F Carena, F Carrilho, P Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Charpentier, P Chaussard, L Chauveau, J and Checchia, P Chelkov, GA Chierici, R Chliapnikov, P and Chochula, P Chorowicz, V Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C and Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoeck, H DeBoer, W DeBrabandere, S and DeClercq, C DeLaVaissiere, C DeLotto, B DeMin, A and DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L and Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M and Drees, J Drees, KA Dris, M Dufour, Y Dupont, F and Edsall, D Ehret, R Eigen, G Ekelof, T Ekspong, G and Elsing, M Engel, JP Ershaidat, N Erzen, B Santo, ME and Falk, E Fassouliotis, D Feindt, M Ferrer, A Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E and Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Halgren, A Hamacher, K Hao, W Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H and Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO and Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M and Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klein, H Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Krolikowski, J Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Legan, CK Leitner, R and Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Liko, D Lindner, R Lipniacka, A Lippi, I and Loerstad, B Lokajicek, M Loken, JG Lopez, JM and LopezFernandez, A Aguera, MAL Loukas, D Lutz, P Lyons, L and MacNaughton, J Maehlum, G Maio, A Malychev, V Mandl, F Maocun, C Marco, J Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C and MartinezVidal, F Garcia, SMI Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Meroni, C Meyer, S Meyer, WT Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Negri, P Nemecek, S and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A OberschulteBeckmann, W Obraztsov, V Olshevski, AG and Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pernicka, M Perrotta, A and Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P Pukhaeva, N Radojicic, D and Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P and Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, A Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stichelbaut, F Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Weierstall, M Weilhammer, P and Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Yushchenko, O Zach, F Zacharatour, C and Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zuberi, R and Zucchelli, GC Zumerle, G
Abstract: An analysis is presented of inclusive pi(0) production in Z(0) decays measured with the DELPHI detector, At low energies, pi(0) decays are reconstructed by using pairs of converted photons and combinations of converted photons and photons reconstructed in the: barrel electromagnetic calorimeter (HPC). At high energies (up to x(p) = 2 . p(pi)/root s = 0.75) the excellent granularity of the HPC is exploited to search for two-photon substructures in single showers, The inclusive differential cross section is measured as a function of energy for q (q) over bar and b (b) over bar events, The number of pi(0)’s per hadronic Z(0) event is N(pi(0))/Z(had)(0) = 9.2 +/- 0.2(stat) +/- 1.0(syst) and for b (b) over bar events the number of pi(0),s is N(pi(0))/b (b) over bar = 10.1 +/- 0.4(stat) +/- 1.1(syst). The ratio of the number of pi(0)’s in b (b) over bar events to hadronic Z(0) events is less affected by the systematic errors and is found to be 1.09 +/- 0.05 +/- 0.01. The measured pi(0) cross sections are compared with the predictions of different parton shower models. For hadronic events, the peak position in the xi(p) = ln(l/X(p)) distribution is xi(p)* = 3.90(-0.14)(+0.24). The average number of pi(0)’s from the decay of primary B hadrons is found to be N(B –> pi(0) X)/B hadron = 2.78 +/- 0.15(stat) +/- 13.60(syst).
Published: 1996

207. Search for anomalous production of single photons at root s=130 and 136 GeV

Author: Adam, W., Adye, T., Agasi, E., Ajinenko, L., Aleksan, R., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Barbiellini, G., Bardin, D. Y., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Bianchi, Fabrizio, Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., Malychev, V., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., S. M. I., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, Ernesto, Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Pindo, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, Alessandra, Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E. L., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zucchelli, G. C., and Zumerle, G.
Subjects: INVISIBLE WIDTH, COLLISIONS, Standard Model, DELPHI, single photon, coupling, High Energy Physics::Experiment
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 √s = 130 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 e+e- → vv̄γ, and the number of neutrino families has been determined to be Nv, = 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

208. Measurement of the partial decay width R(b)(0)=Gamma(b(b)over-bar)/Gamma(had) of the Z with the DELPHI detector at LEP

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Benvenuti, AC Berggren, M Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Blyth, S Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Borisov, G Bosio, C Bosworth, S Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Chabaud, V Charpentier, P and Chaussard, L Chauveau, J Checchia, P Chelkov, GA Chen, M and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Chudoba, J Cindro, V Collins, P Contreras, JL Contri, R and Cortina, E Cosme, G Cossutti, F Crawley, HB and Crennell, D Crosetti, G Maestro, JC Czellar, S and DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G and Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DelaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Dufour, Y Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Ershaidat, N Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A and Ferrer, A Filippas, TA Firestone, A Fischer, PA and Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B and Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R and FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gibbs, M and Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G Grzelak, K and Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Hao, W and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Katargin, A and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kourkoumelis, C Kouznetsov, O and Kramer, PH Krammer, M Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K and Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Last, I Laugier, JP and Lauhakangas, R Ledroit, F Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Liko, D Lindner, R Lipniacka, A Lippi, I and Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P and Lyons, L MacNaughton, J Maehlum, G Maio, A Malychev, V and Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Merk, M and Meroni, C Meyer, S Meyer, WT Miagkov, A Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A OberschulteBeckmann, W Obraztsov, V Olshevski, AG and Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Pernegger, H Pernicka, M Perrotta, A and Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P Pukhaeva, N Pullia, A and Radojicic, D Ragazzi, S Rahmani, H Rames, J Ratoff, PN and Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M and Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Solovianov, O Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tonazzo, A Tortora, L Transtromer, G Treille, D and Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A and Turluer, ML Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, B Ullaland, O Uvarov, V Valenti, G and Vallazza, E VanderVelde, C VanApeldoorn, GW VanDam, P and VanDoninck, WK VanEldik, J Vassilopoulos, N Vegni, G and Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E and Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F and Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The partial decay width of the Z to quark pairs has been measured by the DELPHI detector at LEP. B-hadrons, containing b-quarks, were tagged by several methods using tracks with large impact parameters to the primary vertex complemented sometimes by event shape variables or using leptons with high transverse momentum relative to the hadron, In order to reduce the systematic uncertainties, in all methods the b-tagging efficiency has been extracted directly from the data. Combining all methods, the value: Gamma()/Gamma(had) = 0.2216 +/- 0.0016(stat.) +/- 0.0021(syst.) was found, where the production fraction was fixed to its Standard Model value.
Published: 1996

209. Measurement of the Bd0 oscillation frequency using kaons, leptons and jet charge

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Alemany, R. Allport, P.P. Almehed, S. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barate, R. Barbi, M. Bardin, D.Y. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bloch, D. Blume, M. Blyth, S. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bosworth, S. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenke, T. Brenner, R.A. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschmann, P. Buys, A. Cabrera, S. Caccia, M. Calvi, M. Camacho Rozas, A.J. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chen, M. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Deghorain, A. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boer, W. De Brabandere, S. De Clercq, C. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Dufour, Y. Edsall, D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Erzen, B. Espirito Santo, M. Falk, E. Fassouliotis, D. Feindt, M. Fenyuk, A. Ferrer, A. Filippas, T.A. Firestone, A. Fischer, P.-A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gibbs, M. Gokieli, R. Golob, B. Gopal, G. Gorn, L. Gorski, M. Gouz, Yu. Gracco, V. Graziani, E. Grosdidier, G. Grzelak, K. Gumenyuk, S. Gunnarsson, P. Gunther, M. Guy, J. Hahn, F. Hahn, S. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Jonsson, P. Joram, C. Juillot, P. Kaiser, M. Kapusta, F. Karafasoulis, K. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khokhlov, Yu. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koene, B. Kokkinias, P. Koratzinos, M. Korcyl, K. Kourkoumelis, C. Kouznetsov, O. Kramer, P.-H. Krammer, M. Kreuter, C. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kurvinen, K. Lacasta, C. Laktineh, I. Lamblot, S. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Loken, J.G. Lopez, J.M. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Maehlum, G. Maio, A. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti I Garcia, S. Masik, J. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Medbo, J. Merk, M. Meroni, C. Meyer, S. Meyer, W.T. Miagkov, A. Michelotto, M. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Mundim, L.M. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nieuwenhuizen, M. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Palka, H. Papadopoulou, Th.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Passeri, A. Pegoraro, M. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Petrovyck, M. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Pindo, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schimmelpfennig, M. Schneider, H. Schwickerath, U. Schyns, M.A.E. Sciolla, G. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Solovianov, O. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stanescu, C. Stapnes, S. Stavitski, I. Stichelbaut, F. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tavernet, J.P. Tchikilev, O. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vrba, V. Wahlen, H. Walck, C. Waldner, F. Weierstall, M. Weilhammer, P. Weiser, C. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Experiment
Abstract: A measurement of the mass difference, Δmd, between the two physical Bd0 states has been obtained from the analysis of the impact parameter distribution of a lepton emitted at large transverse momentum (pt) relative to the jet axis and from the analysis of the flight distance distribution of secondary vertices tagged by either a high pt lepton or an identified kaon. In the opposite hemisphere of the event, the charge of the initial quark has been evaluated using a high pt lepton, a charged kaon or the mean jet charge. With 1.7 million hadronic Z0 decays recorded by DELPHI between 1991 and 1993, Δmd is found to be: Δmd = 0.531-0.046+0.050 (stat.) ± 0.078 (syst.) ps-1. © Springer-Verlag 1996.
Published: 1996

210. Measurement of the B-d(0) oscillation frequency using kaons, leptons and jet charge

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O Barrio, JM and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Benvenuti, AC Berggren, M Bertrand, D Bianchi, F Bigi, M and Bilenky, MS Billoir, P Bloch, D Blume, M Blyth, S and Bolognese, T Bonesini, M Bonivento, W Booth, PSL and Borisov, G Bosio, C Bosworth, S Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brillault, L Brown, RCA Bruckman, P Brunet, JM and Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A and Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Chabaud, V Charpentier, P Chaussard, L and Chauveau, J Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cindro, V Collins, P Contreras, JL Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D and Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Defoix, C Deghorain, A and DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DelaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Dufour, Y Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Ershaidat, N Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A and Ferrer, A Filippas, TA Firestone, A Fischer, PA and Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B and Frenkiel, P Fries, DC Frodesen, AG FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN and Gele, D Gerber, JP Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C and Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Miagkov, A Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K and Monge, MR Morettini, P Mueller, H Mundin, LM Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P and Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G and Ripp, I Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Shellard, RC Siccama, I and Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Toet, DZ and Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Trischuk, W Tristram, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR and Williams, WSC Winter, M Woschnagg, K Yip, K Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment
Abstract: A measurement of the mass difference, Delta m(d), be tween the two physical B-d(0) states has been obtained from the analysis of the impact parameter distribution of a lepton emitted at large transverse momentum (p(t)) relative to the jet axis and from the analysis of the flight distance distribution of secondary vertices tagged by either a high p(t) lepton or an identified kaon. In the opposite hemisphere of the event, the charge of the initial quark has been evaluated using a high p(t) lepton, a charged kaon or the mean jet charge, With 1.7 million hadronic Z(0) decays recorded by DELPHI between 1991 and 1993, Delta m(d) is found to be: Delta m(d) = 0.531 (+0.050)(-0.046) (stat.) +/- 0.078 (syst.) ps(-1).
Published: 1996

211. Search for neutralinos, scalar leptons and scalar quarks in e(+)e(-) interactions at root s=130 GeV and 136 GeV

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andersson, P Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Asman, B Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M and Bardin, DY Baroncelli, A Barring, O Barrio, JA and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S and Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V and Canepa, M Cankocak, K Cao, F Carena, F Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Checchia, P Chelkov, GA and Chen, M Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Chudoba, J Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L DiDiodato, A and Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M and Drees, J Drees, KA Dris, M Durand, JD Edsall, D and Ehret, R Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Ferrer, A Fichet, S Filippas, TA Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F and Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A Gamba, D and Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gokieli, R and Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y and Gracco, M Graziani, E Green, C Grefrath, A Gris, P and Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P and Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E and Hilke, HJ Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P and Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M and Karvelas, E Katsanevas, S Katsoufis, EC Keranen, R and Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klapp, O Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW and Lanceri, L Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F Lefebure, V and Legan, CK Leitner, R Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Libby, J Liko, D Lindner, R Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D and Lutz, P Lyons, L MacNaughton, J Maehlum, G Mahon, JR and Maio, A Malmgren, TGM Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A MartinezRivero, C MartinezVidal, F Garcia, SM Masik, J Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J and Merk, M Meroni, C Meyer, S Meyer, WT Miagkov, A and Michelotto, M Migliore, E Mirabito, L Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Pain, R and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parker, C Parodi, F Passeri, A Pegoraro, M Peralta, L and Pernegger, H Pernicka, M Perrotta, A Petridou, C and Petrolini, A Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M Plaszczynski, S Podobrin, O Pol, ME and Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG and Regler, M Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI and Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siccama, I Siegrist, P and Silvestre, R Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Sokolov, A Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stevenson, K Stichelbaut, F and Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tcherniaev, E and Tchikilev, O Thomas, J Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G and Treille, D Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS and Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weirstall, M Weilhammer, P Weiser, C Wetherell, AM Wicke, D and Wickens, JH Wielers, M Wilkinson, GR Williams, WSC and Winter, M Witek, M Woschnagg, K Yip, K Yushchenko, O and Zach, F Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zucchelli, GC Zumerle, G
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: Using data accumulated by DELPHI during the November 1995 LEP run at 130-136 GeV, searches 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

212. Study of rare b decays with the DELPHI detector at LEP

Author: Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andreazza, A Andrieux, ML Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barate, R Barbi, M and Bardin, DY Baroncelli, A Barring, O Barrio, JA and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Bolognese, T Bonesini, M Bonivento, W Booth, PSL Borisov, G Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brown, RCA Bruckman, P Brunel, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S and Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V and Canepa, M Cankocak, K Cao, F Carena, F Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Durand, JD Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Fenyuk, A Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F and Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A and Gamba, D Gandelman, M Garcia, C Garcia, J Gasper, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hann, S Hajduk, Z Hallgren, A Hamacher, K and Hao, W Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kourkoumelis, C Kouznetsov, O and Kramer, PH Krammer, M Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K and Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Last, I Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V Legan, CK and Leitner, R Lemoigne, Y Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Libby, J Liko, D Lidner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM and Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G and Maio, A Malychev, V Marco, J Marco, R Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Merk, M and Meroni, C Meyer, S Meyer, WT Miagkov, A Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A Novak, M OberschulteBeckman, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A and Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P and Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G and Ripp, L Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N and Smirnova, O Smith, GR Sokolov, A Solovianov, O and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, LA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Waldner, F Weierstall, M and Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M and Witek, M Woschnagg, K Yip, K Yushchenko, O Zach, F and Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Abstract: Rare decays of beauty particles were studied in several charmless modes using the data collected with the DELPHI detector at LEP from 1991 to 1994. These decays are mediated by both tree level b–>u and one-loop penguin b–>s, d transitions. Evidence for charmless B decays was obtained in two body hadronic modes. The branching ratios of B-d,s(0) to pi(+)pi(-) or K(+)pi(-) and B-u(-) to rho(0) pi(-) or K(*0)pi(-) were found to be (2.8(-1.0)(+1.5) +/- 0.2) x 10(-5) and (1.7(-0.8)(+1.2) +/- 0.2) x 10(-4) respectively. The fraction of these decays with a charged kaon in the final state that is not from the spectator s quark, was measured to be 0.58 +/- 0.18. Upper limits were set at 90% confidence level on the branching ratios for three and four body charmless hadronic decays in the range of (1-3) x 10(-4), for inclusive radiative b–>s gamma decays at 5.4 x 10(-4), for inclusive radiative b–>s gamma decays at 5.4 x 10(-4), for the exclusive radiative decays B-d(0)–>K*(892)(0) gamma and B-s(0)–>phi(1020)gamma at 2.1 x 10(-4) and 7.0 x 10(-4) respectively, and for dineutrino decays, b–>, in the exclusive channels B-d(0)–>K*(892)(0) nu and B-2(0)–>phi(1020) at 1.0x10(-3) respectively. The limits on dineutrino decays constrain theories with a new U(1) gauge boson coupling predominantly to the third family of fermions.
Published: 1996

213. Search for high mass gamma gamma resonances in e(+)e(-)->l(+)l(-)gamma gamma, nu(nu)over-bar-gamma gamma and q(q)over-bar-gamma gamma at LEP I

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Benvenuti, AC Berggren, M Bertini, D and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A and Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T and Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR and Chabaud, V Charpentier, P Chaussard, L Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and Angelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and SaintJean, CD Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J Drees, KA Dris, M Durand, JD Edsall, D Ehret, R Eigen, G and Ekelof, T Ekspong, G Elsing, M Engel, JP Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hallgren, A Hamacher, K Hao, W and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khokhlov, Y Khomenko, BA and Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A and Kluit, P Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kourkoumelis, C Kouznetsov, O Kramer, PH Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW Langefeld, P Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Libby, J Liko, D and Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A Malmgren, TGM Malychev, V and Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J Matorras, F and Matteuzii, C Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J Merck, M Meroni, C Meyer, S and Meyer, WT Miagkov, A Michelotto, M Migliore, E and Mirabito, L Mitaroff, M Mjoernmark, U Moa, T Moeller, R and Moenig, K Monge, MR Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Newmann, W and Neumeister, N Nicolaidou, R Nielsen, BS Nieuwenhuizen, M and Nikolaenko, V Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG and Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Pain, R Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C Parodi, F and Passeri, A Pegorano, M Peralta, L Pernicka, M Perrotta, A Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P and Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Solovianov, O Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, L Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O and Thomas, J Tilquin, A Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanEldik, J and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Yushchenko, O Zach, F Zaitsev, A and Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E and Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment
Abstract: A search for high mass photon pairs from the processes e(+)e(-) –> l(+)l(-)gamma gamma, e(+)e(-) –> and e(+)e(-) –> nu nu gamma gamma with the DELPHI detector at LEP I is reported. From a data sample containing 3.5 million hadronic Z(0) decays, collected by DELPHI during the years 1991 to 1994, 79 events with two charged leptons and two isolated photons were selected with photon pair masses above 10 GeV/c(2), where 76 +/- 6 events were predicted from standard sources. In the same data sample, no candidates were found and no accumulation of events was visible for gamma gamma masses above 10 GeVlc2 in the q channel. Upper limits at 95% confidence level on the Z(0) branching ratios for the three different channels were extracted from the data. In the mass region m(gamma gamma) > 30 CeV/c(2) the limits obtained are between 3x10(-6) and 4x10(-6).
Published: 1996

214. Mean lifetime of the B-s(0) meson

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C and Bosworth, S Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD and Brenke, T Brenner, RA Bricman, C Brillault, L Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Chapkin, M Charpentier, P Chaussard, L and Chauveau, J Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudova, J and Cindro, V Collins, P Contreras, JL Contri, R Cortina, E and Cosme, G Cossutti, B Crawley, HB Crennell, D and Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Defoix, C Deghorain, A and DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DeLaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Edsall, D Ehret, R Eigen, G Ekelof, T Ekspong, G and Elsing, M Engel, JP Ershaidat, N Erzen, B Santo, ME and Falk, E Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A and Filippas, TA Firestone, A Fischer, PA Foeth, H and Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Hallgren, A Hamacher, K Hao, W Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H and Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO and Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klein, H Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Legan, CK Leitner, R Lemoigne, Y and Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Liko, D and Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A Novak, M OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Ostankov, A Osterberg, K Ouraou, A Paganini, P Paganoni, M and Pages, P Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A Pegoraro, M and Pernegger, H Pernicka, M Perrotta, A Petridou, C and Petrolini, A Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P Ross, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K and Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N and Smirnova, O Smith, GR Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L and Transtromer, G Treille, D Trischuk, W Tristram, G and Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA and Tyndel, M Tzamarias, S Ueberschaer, B Ullaland, O and Uvarov, V Valenti, G Vallazza, E VanderVelde, C and VanApeldoorn, GW VanDam, P VanDoninck, WK VanEldik, J and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Weierstall, M Weilhammer, P Weiser, C and Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Woschnagg, K and Yip, K Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zuberi, R Zucchelli, GC Zumerle, G
Abstract: This paper presents an update of the measurement of the mean lifetime of the B-s(0) meson. Combining D-s - l, D-s - h, phi - l and inclusive D-s final states from the 3.2 million hadronic Z decays collected by DELPHI between 1991 and 1994, the B-s(0) mean lifetime was measured to be: tau(B-s(0)) = 1.67 +/- 0.14 ps.
Published: 1996

215. Charged particle multiplicity in $e^+e^-$ interactions at $\sqrt{s}$ = 130 GeV

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, Roy, Alekseev, G D, Alemany, R, Allport, P P, Almehed, S, Amaldi, Ugo, Amato, S, Andreazza, A, Andrieux, M L, Antilogus, P, Apel, W D, Arnoud, Y, Åsman, B, Augustin, J E, Augustinus, A, Baillon, Paul, Bambade, P, Barão, F, Barate, R, Barbi, M S, Bardin, Dimitri Yuri, Baroncelli, A, Bärring, O, Barrio, J A, Bartl, Walter, Bates, M J, Battaglia, Marco, Baubillier, M, Baudot, J, Becks, K H, Begalli, M, Beillière, P, Belokopytov, Yu A, Belous, K S, Benvenuti, Alberto C, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, S M, Billoir, P, Bloch, D, Blume, M, Blyth, S, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P S L, Borisov, G, Bosio, C, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, T J V, Bozzo, M, Branchini, P, Brand, K D, Brenke, T, Brenner, R A, Bricman, C, Brillault, L, Brown, R C A, Brückman, P, Brunet, J M, Bugge, L, Buran, T, Burgsmüller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, M, Calvi, M, Camacho-Rozas, A J, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, Carlo, Castillo-Gimenez, M V, Cattai, A, Cavallo, F R, Cerrito, L, Chabaud, V, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G A, Chen, M, Chierici, R, Chliapnikov, P V, Chochula, P, Chorowicz, V, Cindro, V, Collins, P, Contreras, J L, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, H B, Crennell, D J, Crosetti, G, Cuevas-Maestro, J, Czellar, S, Dahl-Jensen, Erik, Dahm, J, D'Almagne, B, Dam, M, Damgaard, G, Dauncey, P D, Davenport, Martyn, Da Silva, W, Defoix, C, Deghorain, A, Della Ricca, G, Delpierre, P A, Demaria, N, De Angelis, A, de Boer, Wim, De Brabandere, S, De Clercq, C, La Vaissière, C de, De Lotto, B, De Min, A, De Paula, L S, De Saint-Jean, C, Dijkstra, H, Di Ciaccio, Lucia, Djama, F, Dolbeau, J, Dönszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, K A, Dris, M, Dufour, Y, Edsall, D M, Ehret, R, Eigen, G, Ekelöf, T J C, Ekspong, Gösta, Elsing, M, Engel, J P, Ershaidat, N, Erzen, B, Espirito-Santo, M C, Falk, E, Fassouliotis, D, Feindt, Michael, Fenyuk, A, Ferrer, A, Filippas-Tassos, A, Firestone, A, Fischer, P A, Föth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B J, Frenkiel, P, Fries, D E C, Frodesen, A G, Frühwirth, R, Fulda-Quenzer, F, Fuster, J A, Galloni, A, Gamba, D, Gandelman, M, García, C, García, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, E N, Gelé, D, Gerber, J P, Gerdyukov, L N, Gibbs, M, Gokieli, R, Golob, B, Gopal, Gian P, Gorn, L, Górski, M, Guz, Yu, Gracco, Valerio, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S A, Gunnarsson, P, Günther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, F J, Hedberg, V, Henriques, R P, Hernández, J J, Herquet, P, Herr, H, Hessing, T L, Higón, E, Hilke, Hans Jürgen, Hill, T S, Holmgren, S O, Holt, P J, Holthuizen, D J, Hoorelbeke, S, Houlden, M A, Hrubec, Josef, Huet, K, Hultqvist, K, Jackson, J N, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E K, Jönsson, L B, Jönsson, P E, Joram, Christian, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, E C, Keränen, R, Khokhlov, Yu A, Khomenko, B A, Khovanskii, N N, King, B J, Kjaer, N J, Klein, H, Klovning, A, Kluit, P M, Köne, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kourkoumelis, C, Kuznetsov, O, Kramer, P H, Krammer, Manfred, Kreuter, C, Kronkvist, I J, Krumshtein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K L, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, J, Lanceri, L, Lane, D W, Langefeld, P, Last, I, Laugier, J P, Lauhakangas, R, Leder, Gerhard, Ledroit, F, Lefébure, V, Legan, C K, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, Georg, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Lörstad, B, Lokajícek, M, Loken, J G, López, J M, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J N, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Marco, R P, Maréchal, B, Margoni, M, Marin, J C, Mariotti, C, Markou, A, Maron, T, Martínez-Rivero, C, Martínez-Vidal, F, Martí i García, S, Matorras, F, Matteuzzi, C, Matthiae, Giorgio, Mazzucato, M, McCubbin, M L, McKay, R, McNulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, W T, Michelotto, M, Migliore, E, Mirabito, L, Mjörnmark, U, Moa, T, Møller, R, Mönig, K, Monge, M R, Morettini, P, Müller, H, Mundim, L M, Murray, W J, Muryn, B, Myatt, Gerald, Naraghi, F, Navarria, Francesco Luigi, Navas, S, Nawrocki, K, Negri, P, Némécek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, B S, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, Ainsley, Oberschulte-Beckmann, W, Obraztsov, V F, Olshevskii, A G, Onofre, A, Orava, Risto, Österberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pagès, P, Palka, H, Papadopoulou, T D, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, Manfred, Perrotta, A, Petridou, C, Petrolini, A, Petrovykh, M, Phillips, H T, Piana, G, Pierre, F, Pimenta, M, Pindo, M, Plaszczynski, S, Podobrin, O, Pol, M E, Polok, G, Poropat, P, Pozdnyakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, Antonio, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P N, Read, A L, Reale, M, Rebecchi, P, Redaelli, N G, Regler, Meinhard, Reid, D, Renton, P B, Resvanis, L K, Richard, F, Richardson, J, Rídky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, E I, Rosso, E, Roudeau, Patrick, Rovelli, T, Rückstuhl, W, Ruhlmann-Kleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Yu, Sadovskii, A, Sajot, G, Salt, J, Sánchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, M A E, Sciolla, G, Scuri, F, Seager, P, Sedykh, Yu, Segar, A M, Seitz, A, Sekulin, R L, Shellard, R C, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sissakian, A N, Sitár, B, Skaali, T B, Smadja, G, Smirnov, N, Smirnova, O G, Smith, G R, Solovyanov, O, Sosnowski, R, Souza-Santos, D, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, Steinar, Stavitski, I, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli de Fatis, T, Tavernet, J P, Chikilev, O G, Tilquin, A, Timmermans, J, Tkatchev, L G, Todorov, T, Toet, D Z, Tomaradze, A G, Tomé, B, Tonazzo, A, Tortora, L, Tranströmer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A L, Turluer, M L, Tyapkin, I A, Tyndel, M, Tzamarias, S, Überschär, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Van der Velde, C, van Apeldoorn, G W, van Dam, P, Van Doninck, W K, Van Eldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W A, Verbeure, F, Verlato, M, Vertogradov, L S, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, A S, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weierstall, M, Weilhammer, Peter, Weiser, C, Wetherell, Alan M, Wicke, D, Wickens, J H, Wielers, M, Wilkinson, G R, Williams, W S C, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yushchenko, O P, Zach, F, Zaitsev, A, Zalewska-Bak, A, Zalewski, Piotr, Zavrtanik, D, Zevgolatakos, E, Zimin, N I, Zito, M, Zontar, D, Zuberi, R, Zucchelli, G C, Zumerle, G, 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 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), 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, 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 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), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
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 = 23.84 \pm 0.51 (stat) \pm 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 \alpha_s(130 {\mathrm{GeV}}) = 0.105 \pm 0.003 (stat) \pm 0.008 (syst).
Published: 1996

216. A measurement of the photon structure function F-2(gamma) at an average Q(2) of 12 GeV2/c(4)

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asam, B Augustin, JE and Augustinus, A Baillon, P Bambade, P BArao, F Barate, R and Bardin, DY Barker, GJ Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Batyunya, B and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Belous, K Benvenuti, AC and Berggren, M Bertrand, D Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bloch, D Blume, M Blyth, S Bocci, V and Bolognese, T Bonesini, M Bonivento, W Booth, PSL and Borisov, G Bosio, C Bosworth, S Botner, O Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brillault, L and Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Caccia, M Calvi, M and Rozas, AJC Comporesi, T Canale, V Canepa, M and Cankocak, K Cao, F Carena, F Carrilho, P Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Charpentier, P Chaussard, L Chauveau, J and Checchia, P Chelkov, GA CHierici, R Chliapnikov, P and Chochula, P Chorowicz, V Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G Daum, A Dauncey, PD Davenport, M Silva, WD Defoix, C Ricca, GD Delpierre, P Demaria, N DeAngelis, A and DeBoeck, H DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Dupont, F Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Ershaidat, N Erzen, B Santo, ME Falk, E and Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A Filippas, TA Firestone, A Foeth, H Fokitis, E Fontanelli, F and Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Furstenau, H Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerb, JP Gibbs, M Gillespie, D Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Gunnarsson, P Gunther, M Guy, J Haedinger, U Hahn, F Hahn, M Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E and Hilke, HJ Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Houlden, M Hrubec, J Huet, K Hultqvist, K Ioannou, P Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kalmus, G and Kapusta, F Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khomenko, BA Khovanski, NN and King, B Kjaer, NJ Klein, H Klovning, A Kluit, P and Koehne, JH Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Kramer, PH and Krammer, M Kreuter, C Krolikowski, J Kronkvist, I and Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W and Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW and Lanceri, L Lane, DW Langefeld, P Lapin, V Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Lokajicek, M and Loken, JG Lopez, JM LopezFernandez, A Aguera, MAL and Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G and Maio, A Malychev, V Mandl, F Marco, J Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SM Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M and McKay, R McNulty, R Medbo, J Meroni, C Meyer, WT and Miagkov, A Michelotto, M Migliore, E Mirabito, L and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pernegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT Piana, G Pierre, F Pimenta, M Plaszczynski, S Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P and Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K and Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J and Sanchez, J Sannino, M Schneider, H Schyns, MAE Sciolla, G Scuri, F Sedykh, Y Segar, AM Seitz, A Sekulin, R and Shellard, RC Siccama, I Siegrist, P Simonetti, S and Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G and Smirnov, N Smirnova, O Smith, GR Sosnowski, R and SouzaSantos, D Spassov, T Spiriti, E Sponholz, P and Squarcia, S Stanescu, C Stapnes, S Stavitski, I and Stepaniak, K Stichelbaut, F Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Vlasov, E and Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F and Weierstall, M Weihammer, P Wetherell, AM Wicke, D and Wickens, JH Wielers, M Wilkinson, GR Williams, WSC and Winter, M Witek, M Woschnagg, K Yip, K Yushchenko, O and Zach, F Zacharatou, C Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zuberi, R Zucchelli, GC Zumerle, G
Abstract: The hadronic photon structure function F-2(gamma) has been measured in the Q(2) range from 4 to 30 GeV2/c(4) and down to x values of order 0.001, using data taken with the DELPHI detector at LEP between 1991 and 1993. A comparison is made with several F-2(gamma) parameterizations with special emphasis on their low rr: behaviour. A result on the Q(2) evolution of F-2(gamma) is presented.
Published: 1996

217. Activation and inflammation markers in HIV-1-infected patients in dependency of treatment strategies

Author: Ehret, R, primary, Wienbreyer, A, additional, Obermeier, M, additional, Baumgarten, A, additional, Krznaric, I, additional, Ingiliz, P, additional, Carganico, A, additional, Dupke, S, additional, Cordes, C, additional, Schulbin, H, additional, Claus, J, additional, and Berg, T, additional
Published: 2012
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218. Genotypic HIV-coreceptor tropism prediction with geno2pheno [coreceptor]: differences depending on HIV-1-subtype

Author: Obermeier, M, primary, Ehret, R, additional, Berg, T, additional, Braun, P, additional, Korn, K, additional, Müller, H, additional, Noah, C, additional, Stürmer, M, additional, Thielen, A, additional, Walter, H, additional, Wolf, E, additional, and Kaiser, R, additional
Published: 2012
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219. Ménage à trois: increased prevalence of syphilis infection in HIV-positive MSM with acute hepatitis C

Author: Krznaric, I, primary, Ingiliz, P, additional, Wienbreyer, A, additional, Baumgarten, A, additional, Carganico, A, additional, Dupke, S, additional, Ehret, R, additional, and Obermeier, M, additional
Published: 2012
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220. HIV-1 drug resistance testing at low viral load may help to differentiate between ongoing replication and release from reservoirs

Author: Obermeier, M, primary, Ehret, R, additional, Kaiser, R, additional, and Berg, T, additional
Published: 2012
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221. OBSERVATION OF SHORT-RANGE 3-PARTICLE CORRELATIONS IN E(+)E(-) ANNIHILATIONS AT LEP ENERGIES

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Allport, P. P., Almehed, S., Alvsvaag, S. J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbiellini, G., Bardin, D. Y., Barker, G. J., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A. C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Borisov, G., Bosio, C., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenner, R. A., Bricman, C., Brillault, L., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Cerrito, L., Chabaud, V., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chierici, R., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P. D., Davenport, M., Dasilva, W. E., Defoix, C., Ricca, G. D., Delpierre, P., Demaria, N., Deangelis, A., Deboeck, H., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Dufour, Y., Dupont, F., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Ershaidat, N., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Furstenau, H., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gillespie, D., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Gunnarsson, P., Gunther, M., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Houlden, M., Huet, K., Hultqvist, K., Ioannou, P., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katargin, A., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koehne, J. H., Koene, B., Kokkinias, P., Koratzinos, M., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, J. G., Lopez, J. M., Lopezfernandez, A., M. A. L., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., Malychev, V., Mandl, F., Marco, J., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., Garcia, S. M., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Meroni, C., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, Paolo, Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, H., M. A. E., Sciolla, G., Scuri, F., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, Franco, Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sokolov, A., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Squarcia, S., Staeck, H., Stanescu, C., Stapnes, S., Stavitski, I., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Toet, D. Z., Tomaradze, A., Tome, B., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ueberschaer, S., Ullaland, O., Valenti, G., Vallazza, E., Velde, C. V., Vanapeldoorn, G. W., Vandam, P., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zacharatou, C., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G. C., and Zumerle, Gianni
Subjects: BOSE-EINSTEIN CORRELATIONS, LUND MONTE-CARLO, HADRONIC Z0 DECAYS, JET FRAGMENTATION, E+E ANNIHILATION, COLLISIONS, PHYSICS, Z(0), DELPHI, Bose-Einstein correlation, fragmentation, jet, High Energy Physics::Experiment
Abstract: Measurements are presented of short range three-particle correlations in e+e- annihilations at LEP using data collected by the DELPHI detector. At small values of the four-momentum difference, strong three-particle correlations are observed for like-sign (+++ and ---) and for unlike-sign (++- and +--) pion combinations which are not a consequence of two-particle correlations. A possible explanation of the observed effects in like-sign combinations is the existence of higher order Bose-Einstein interference, which significantly changes the particle distributions in jets. © 1995.
Published: 1995

222. A measurement of B+ and B0 lifetimes using {Mathematical expression} events

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, GD, Allport, PP, Almehed, S, Alvsvaag, SJ, Amaldi, U, Amato, S, Andreazza, A, Andrieux, ML, Antilogus, P, Apel, W-D, Arnoud, Y, Åsman, B, Augustin, J-E, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbiellini, G, Bardin, DY, Barker, GJ, Baroncelli, A, Barring, O, Barrio, JA, Bartl, W, Bates, MJ, Battaglia, M, Baubillier, M, Baudot, J, Becks, K-H, Begalli, M, Beilliere, P, Belokopytov, Y, Benvenuti, AC, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, MS, Billoir, P, Bloch, D, Blume, M, Blyth, S, Bocci, V, Bolognese, T, Bonesini, M, Bonivento, W, Booth, PSL, Borisov, G, Bosio, C, Bosworth, S, Botner, O, Bouquet, B, Bourdarios, C, Bowcock, TJV, Bozzo, M, Branchini, P, Brand, KD, Brenner, RA, Bricman, C, Brillault, L, Brown, RCA, Bruckman, P, Brunet, J-M, Bugge, L, Buran, T, Buys, A, Caccia, M, Calvi, M, Rozas, AJC, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carrilho, P, Carroll, L, Caso, C, Gimenez, MVC, Cattai, A, Cavallo, FR, Cerrito, L, Chabaud, V, Chapkin, M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, GA, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Cindro, V, Collins, P, Contreras, JL, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, HB, Crennell, D, Crosetti, G, Maestro, JC, Czellar, S, Dahl-Jensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Daum, A, Dauncey, PD, Davenport, M, Da Silva, W, Defoix, C, Ricca, GD, Delpierre, P, Demaria, N, De Angelis, A, De Boeck, H, De Boer, W, De Brabandere, S, De Clercq, C, De La Vaissiere, C, De Lotto, B, De Min, A, De Paula, L, De Saint-Jean, C, Dijkstra, H, Di Ciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, K-A, Dris, M, Dufour, Y, Dupont, F, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, J-P, Ershaidat, N, Erzen, B, Falk, E, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Filippas, TA, Firestone, A, Fischer, P-A, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, DC, Frodesen, AG, Fruhwirth, R, Fulda-Quenzer, F, Furstenau, H, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, EN, Gele, D, Gerber, J-P, Gibbs, M, Gillespie, D, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Grosdidier, G, Gunnarsson, P, Gunther, M, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, FJ, Hedberg, V, Henriques, R, Hernandez, JJ, Herquet, P, Herr, H, Hessing, TL, Higon, E, Hilke, HJ, Hill, TS, Holmgren, S-O, Holt, PJ, Holthuizen, D, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Joannou, P, Jackson, JN, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, EK, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kalmus, G, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, EC, Keranen, R, Khomenko, BA, Khovanski, NN, King, B, Kjaer, NJ, Klein, H, Klovning, A, Kluit, P, Koehne, JH, Koene, B, Kokkinias, P, Koratzinos, M, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, P-H, Krammer, M, Kreuter, C, Krolikowski, J, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, JW, Lanceri, L, Lane, DW, Langefeld, P, Last, I, Laugier, J-P, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, CK, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, JG, Lopez, JM, Lopez-Fernandez, A, Aguera, MAL, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Marechal, B, Margoni, M, Marin, J-C, Mariotti, C, Markou, A, Maron, T, Martinez-Rivero, C, Martinez-Vidal, F, Marti i Garcia, S, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mc Cubbin, R, Mc Kay, R, Mc Nulty, R, Medbo, J, Meroni, C, Meyer, WT, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, WA, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, MR, Morettini, P, Mueller, H, Mundim, LM, Murray, WJ, Muryn, B, Myatt, G, Naraghi, F, Navarria, FL, Navas, S, Negri, P, Nemecek, S, Neumann, W, Nicolaidou, R, Nielsen, BS, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Oberschulte-Beckmann, W, Obraztsov, V, Olshevski, AG, Onofre, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Palka, H, Papadopoulou, TD, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, HT, Piana, G, Pierre, F, Pimenta, M, Plaszczynski, S, Podobrin, O, Pol, ME, Polok, G, Poropat, P, Pozdniakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, PN, Read, AL, Reale, M, Rebecchi, P, Redaelli, NG, Regler, M, Reid, D, Renton, PB, Resvanis, LK, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronjin, V, Roos, L, Rosenberg, EI, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Sanchez, J, Sannino, M, Schneider, H, Schyns, MAE, Sciolla, G, Scuri, F, Sedykh, Y, Segar, AM, Seitz, A, Sekulin, R, Shellard, RC, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, AN, Sitar, B, Skaali, TB, Smadja, G, Smirnov, N, Smirnova, O, Smith, GR, Solovyanov, O, Sosnowski, R, Souza-Santos, D, Spassov, T, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stapnes, S, Stavitski, I, Stepaniak, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, JP, Tchikilev, O, Tilquin, A, Timmermans, J, Tkatchev, LG, Todorov, T, Toet, DZ, Tomaradze, A, Tome, B, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, M-L, Tyapkin, IA, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vander Velde, C, Van Apeldoorn, GW, Van Dam, P, Van Doninck, WK, Van Eldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, LS, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, AS, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wehr, A, Weierstall, M, Weilhammer, P, Wetherell, AM, Wicke, D, Wickens, JH, Wielers, M, Wilkinson, GR, Williams, WSC, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yushchenko, O, Zach, F, Zacharatou, C, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, NI, Zito, M, Zontar, D, Zuberi, R, Zucchelli, GC, and Zumerle, G
Subjects: Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A measurement of B meson lifetimes is presented using data collected from 1991 to 1993 by the DELPHI detector at the LEP collider. Samples of events with a D meson and a lepton in the same jet are selected where {Mathematical expression} and D*ℓ+ events originate mainly from the semileptonic decays of B+ and B0 mesons, respectively. From the reconstructed B decay length and the estimated B momentum, taking into account the dilution due to B decays into {Mathematical expression}, the following B meson lifetimes and lifetime ratio are measured: {Mathematical expression} and an average lifetime of B+ and B0 mesons is obtained: {Mathematical expression} © 1995 Springer-Verlag.
Published: 1995

223. Production of charged particles, K$_{S}^{0}$, K$^{\pm}$, p and $\Lambda$ in Z --> b$\overline{b}$ events and in the decay of b hadrons

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, Roy, Alekseev, G D, Allport, P P, Almehed, S, D'Almeida, F, Alvsvaag, S J, Amaldi, Ugo, Amato, S, Andreazza, A, Andrieux, M L, Antilogus, P, Apel, W D, Arnoud, Y, Åsman, B, Augustin, J E, Augustinus, A, Baillon, Paul, Bambade, P, Barão, F, Barate, R, Bardin, Dimitri Yuri, Barker, G J, Baroncelli, A, Bärring, O, Barrio, J A, Bartl, Walter, Bates, M J, Battaglia, Marco, Baubillier, M, Baudot, J, Becks, K H, Begalli, M, Beillière, P, Belokopytov, Yu A, Beltran, P, Benvenuti, Alberto C, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, S M, Billoir, P, Bjarne, J, Bloch, D, Blume, M, Blyth, S, Bocci, V, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P S L, Borisov, G, Bosio, C, Bostjancic, B, Bosworth, S, Botner, O, Bouquet, B, Bourdarios, C, Bowcock, T J V, Bozzo, M, Branchini, P, Brand, K D, Brenner, R A, Bricman, C, Brillault, L, Brown, R C A, Brückman, P, Brunet, J M, Bugge, L, Buran, T, Buys, A, Caccia, M, Calvi, M, Camacho-Rozas, A J, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carrilho, P, Carroll, L, Caso, Carlo, Cassio, V, Castillo-Gimenez, M V, Cattai, A, Cavallo, F R, Cerrito, L, Chabaud, V, Chan, A, Chapkin, M M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G A, Chliapnikov, P V, Chochula, P, Chorowicz, V, Chrin, J T M, Cindro, V, Collins, P, Contreras, J L, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, H B, Crennell, D J, Crosetti, G, Cuevas-Maestro, J, Czellar, S, Dahl-Jensen, Erik, Dahm, J, D'Almagne, B, Dam, M, Damgaard, G, Daum, A, Dauncey, P D, Davenport, Martyn, Da Silva, W, Defoix, C, Della Ricca, G, Delpierre, P A, Demaria, N, De Angelis, A, De Boeck, H, de Boer, Wim, De Brabandere, S, De Clercq, C, De Fez Laso, M D M, La Vaissière, C de, De Lotto, B, De Min, A, De Paula, L S, De Saint-Jean, C, Dijkstra, H, Di Ciaccio, Lucia, Djama, F, Dolbeau, J, Dönszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, K A, Dris, M, Dufour, Y, Dupont, F, Edsall, D M, Ehret, R, Ekelöf, T J C, Ekspong, Gösta, Elsing, M, Engel, J P, Ershaidat, N, Espirito-Santo, M C, Fassouliotis, D, Feindt, Michael, Fenyuk, A, Ferrer, A, Filippas-Tassos, A, Firestone, A, Föth, H, Fokitis, E, Fontanelli, F, Formenti, F, Fousset, J L, Franek, B J, Frenkiel, P, Fries, D E C, Frodesen, A G, Fulda-Quenzer, F, Fürstenau, H, Fuster, J A, Gamba, D, Gandelman, M, García, C, García, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, E N, Gelé, D, Gerber, J P, Gillespie, D, Gokieli, R, Golob, B, Gómez-Cadenas, J J, Gopal, Gian P, Gorn, L, Górski, M, Gracco, Valerio, Grard, F, Graziani, E, Grosdidier, G, Gunnarsson, P, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Hahn, S, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, Hao, W, Harris, F J, Hedberg, V, Henriques, R P, Hernández, J J, Hernando, J A, Herquet, P, Herr, H, Hessing, T L, Higón, E, Hilke, Hans Jürgen, Hill, T S, Holmgren, S O, Holt, P J, Holthuizen, D J, Honoré, P F, Houlden, M A, Hrubec, Josef, Huet, K, Hultqvist, K, Ioannou, P, Jackson, J N, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E K, Jönsson, L B, Juillot, P, Kaiser, M, Kalmus, George Ernest, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, E C, Keränen, R, Khomenko, B A, Khovanskii, N N, King, B J, Kjaer, N J, Klein, H, Klovning, A, Kluit, P M, Köhne, J H, Köne, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kostyukhin, V, Kourkoumelis, C, Kuznetsov, O, Kramer, P H, Krammer, Manfred, Kreuter, C, Królikowski, J, Kronkvist, I J, Krumshtein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kulka, K, Kurvinen, K L, Lacasta, C, Laktineh, I, Lamblot, S, Lambropoulos, C, Lamsa, J, Lanceri, L, Lane, D W, Langefeld, P, Lapin, V, Last, I, Laugier, J P, Lauhakangas, R, Leder, Gerhard, Ledroit, F, Lefébure, V, Legan, C K, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, Georg, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Lörstad, B, Lokajícek, M, Loken, J G, López-Fernandez, A, López-Aguera, M A, Loukas, D, Lozano-Bahilo, J, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maio, A, Maltezos, A, Malychev, V, Mandl, F, Marco, J, Maréchal, B, Margoni, M, Marin, J C, Mariotti, C, Markou, A, Maron, T, Martínez-Rivero, C, Martínez-Vidal, F, Martí i García, S, Matorras, F, Matteuzzi, C, Matthiae, Giorgio, Mazzucato, M, McCubbin, M L, McKay, R, McNulty, R, Medbo, J, Meroni, C, Meyer, W T, Michelotto, M, Migliore, E, Mikulec, I, Mirabito, L, Mitaroff, Winfried A, Mjörnmark, U, Moa, T, Møller, R, Mönig, K, Monge, M R, Morettini, P, Müller, H, Murray, W J, Muryn, B, Myatt, Gerald, Naraghi, F, Navarria, Francesco Luigi, Navas, S, Negri, P, Némécek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, B S, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, Ainsley, Oberschulte-Beckmann, W, Obraztsov, V F, Olshevskii, A G, Orava, Risto, Österberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pagès, P, Palka, H, Papadopoulou, T D, Pape, L, Parodi, F, Passeri, A, Pegoraro, M, Pennanen, J, Peralta, L, Perevozchikov, V, Pernegger, H, Pernicka, Manfred, Perrotta, A, Petridou, C, Petrolini, A, Phillips, H T, Piana, G, Pierre, F, Pimenta, M, Plaszczynski, S, Podobrin, O, Pol, M E, Polok, G, Poropat, P, Pozdnyakov, V, Prest, M, Privitera, P, Pullia, Antonio, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P N, Read, A L, Reale, M, Rebecchi, P, Redaelli, N G, Regler, Meinhard, Reid, D, Renton, P B, Resvanis, L K, Richard, F, Richardson, J, Rídky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronjin, V M, Roos, L, Rosenberg, E I, Rosso, E, Roudeau, Patrick, Rovelli, T, Rückstuhl, W, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Yu, Sadovskii, A, Sajot, G, Salt, J, Sánchez, J, Sannino, M, Schneider, H, Schyns, M A E, Sciolla, G, Scuri, F, Sedykh, Yu, Segar, A M, Seitz, A, Sekulin, R L, Shellard, R C, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sissakian, A N, Sitár, B, Skaali, T B, Smadja, G, Smirnov, N, Smirnova, O G, Smith, G R, Sosnowski, R, Souza-Santos, D, Spassoff, Tz, Spiriti, E, Sponholz, P, Squarcia, S, Stäck, H, Stanescu, C, Stapnes, Steinar, Stavitski, I, Stavropoulos, G D, Stepaniak, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli de Fatis, T, Tavernet, J P, Chikilev, O G, Theodosiou, G E, Tilquin, A, Timmermans, J, Tkatchev, L G, Todorov, T, Toet, D Z, Tomaradze, A G, Tomé, B, Torassa, E, Tortora, L, Tranströmer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A L, Turluer, M L, Tyapkin, I A, Tyndel, M, Tzamarias, S, Überschär, B, Überschär, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Valls Ferrer, J A, van Apeldoorn, G W, van Dam, P, Van Doninck, W K, Van Eldik, J, Vegni, G, Ventura, L, Venus, W A, Verbeure, F, Verlato, M, Vertogradov, L S, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, A S, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wehr, A, Weierstall, M, Weilhammer, Peter, Wetherell, Alan M, Wicke, D, Wickens, J H, Wielers, M, Wilkinson, G R, Williams, W S C, Winter, M, Witek, M, Wormser, G, Woschnagg, K, Yip, K, Yu, L, Yushchenko, O P, Zach, F, Zaitsev, A, Zalewska-Bak, A, Zalewski, Piotr, Zavrtanik, D, Zevgolatakos, E, Zimin, N I, Zito, M, Zontar, D, Zuberi, R, Zucchelli, G C, and Zumerle, G
Subjects: Particle Physics - Experiment
Published: 1995

224. Production of strange B-baryons decaying into $\Xi^{\mp}$ - l$^{\mp}$ pairs at LEP

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G D., Allport, P P., Almehed, S., Almeida, F M L., Alvsvaag, S J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M.L., Antilogus, P., Apel, W D., Arnoud, Y., Aasman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbiellini, Guido, Bardin, D Yu., Barker, G J., Baroncelli, A., Baerring, O., Barrio, J A., Bartl, W., Bates, M J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K H., Begalli, M., Beilliere, P., Belokopytov, Yu., Beltran, P., Benvenuti, A C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M S., Billoir, P., Bjarne, J., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P S L., Borisov, G., Bosio, C., Bostjancic, B., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., Bowcock, T J V., Bozzo, M., Branchini, P., Brand, K D., Brenner, R A., Bricman, C., Brillault, L., Brown, R C A., Brueckman, P., Brunet, J M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., Camacho Rozas, A J., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., Cassio, V., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Cerrito, L., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G A., Chliapnikov, P V., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H B., Crennell, D., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Dahl-Jensen, E., Dahm, J., D'Almagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P D., Davenport, M., Da Silva, W., Defoix, C., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boeck, H., De Boer, W., De Brabandere, S., De Clercq, C., De La Vaissiere, C., De Lotto, B., De Min, A., De Paula, L., De Saint-Jean, C., Dijkstra, H., Di Ciaccio, L., Djama, F., Dolbeau, J., Doenszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K A., Dris, M., Dufour, Y., Dupont, F., Edsall, D., Ehret, R., Eigen, G., Ekeloef, T., Ekspong, G., Elsing, M., Engel, J.P., Ershaidat, N., Espirito-Santo, M., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T A., Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D C., Frodesen, A G., Fruehwirth, R., Fulda-Quenzer, F., Fuerstenau, H., Fuster, J., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Gerber, J.P., Gillespie, D., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gracco, V., Grard, F., Graziani, E., Grosdidier, G., Gunnarsson, P., Gunther, M., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Haider, S., Hajduk, Z., Hakansson, A., Hallgren, A., Hamacher, K., Hao, W., Harris, F J., Hedberg, V., Henriques, R., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Higon, E., Hilke, H J., Hill, T S., Holmgren, S O., Holt, P J., Holthuizen, D., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Ioannou, P., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E K., Jonsson, L., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E C., Keraenen, R., Khomenko, B A., Khovanskii, N N., King, B., Kjaer, N J., Klein, H., Klovning, A., Kluit, P., Koehne, J H., Koene, B., Kokkinias, P., Koratzinos, M., Kostyukhin, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumshtein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lambropoulos, C., Lamsa, J W., Lanceri, L., Lane, D W., Langefeld, P., Lapin, V., Last, I., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, J G., Lopez, J M., Lopez-Fernandez, A., Lopez-Aguera, M A., Loukas, D., Lutz, P., Lyons, L., MacNaughton, J., Maehlum, G., Maio, A., Maltezos, A., Malychev, V., Mandl, F., Marco, J., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Markou, A., Maron, T., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., Medbo, J., Meroni, C., Meyer, W T., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M R., Morettini, P., Mueller, H., Mundim, L M., Murray, W J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F L., Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B S., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschulte-Beckmann, W., Obraztsov, V F., Olshevski, A G., Onofre, A., Orava, R., Ostankov, A., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T D., Pape, L., Parodi, F., Passeri, A., Pegoraro, M., Pennanen, J., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, Stéphane, Podobrin, O., Pol, M E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, A L., Reale, M., Rebecchi, P., Redaelli, N G., Regler, M., Reid, D., Renton, P B., Resvanis, L K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmann-Kleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, Henri, Schyns, M A E., Sciolla, G., Scuri, F., Sedykh, Y., Segar, A M., Seitz, A., Sekulin, R L., Shellard, R C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sissakian, A N., Sitar, B., Skaali, T B., Smadja, G., Smirnov, N., Smirnova, O G., Smith, G R., Sosnowski, R., Souza-Santos, D., Spassov, T., Spiriti, E., Squarcia, S., Staeck, H., Stanescu, C., Stapnes, S., Stavitski, I., Stavropoulos, G., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J P., Chikilev, O., Theodosiou, G E., Tilquin, A., Timmermans, J., Tkatchev, L G., Todorov, T., Toet, D Z., Tomaradze, A., Torassa, E., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M L., Tyapkin, I A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ueberschaer, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Valls Ferrer, J A., Van Apeldoorn, G W., Van Dam, P., Van Doninck, W., Van Eldik, J., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A S., Voutilainen, M., Vrba, V., Wahlen, H., Walck, C., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A M., Wicke, D., Wickens, J H., Wielers, M., Wilkinson, G R., Williams, W S C., Winter, M., Witek, M., Wormser, G., Woschnagg, K., Yip, K., Yu, Lianbo, Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G C., Zumerle, G., 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 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), 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, 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), 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 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 Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Particle Physics - Experiment
Published: 1995

225. Measurement of $\Gamma_{b\overline{b}}$/$\Gamma_{had}$ using impact parameter measurements and lepton identification

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Azhinenko, I., Aleksan, R., Alekseev, G.D., Allport, P.P., Almehed, S., Almeida, F.M.L., Alvsvaag, S.J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M.L., Antilogus, P., Apel, W.D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Bardin, D.Yu., Barker, G.J., Baroncelli, A., Barring, O., Barrio, J.A., Bartl, W., Bates, M.J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K.H., Begalli, M., Beilliere, P., Belokopytov, Yu., Beltran, P., Benvenuti, A.C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenkii, M.S., Billoir, P., Bjarne, J., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P.S.L., Borisov, G., Bosio, C., Bostjancic, B., Bosworth, S., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Bozzo, M., Branchini, P., Brand, K.D., Brenner, R.A., Briand, H., Bricman, C., Brillault, L., Brown, R.C.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., Camacho Rozas, A.J., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., Cassio, V., Castillo Gimenez, M.V., Cattai, A., Cavallo, F.R., Cerrito, L., Chabaud, V., Chan, A., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G.A., Chliapnikov, P., Chochula, P., Chorowicz, V., Chrin, J.T.M., Cindro, V., Collins, P., Contreras, J.L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H.B., Crennell, D., Crosetti, G., Cuevas Maestro, J., Czellar, S., Dahl-Jensen, E., Dahm, J., D'Almagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P.D., Davenport, M., Da Silva, W., Defoix, C., Della Ricca, G., Delpierre, P., Demaria, N., De Angelis, A., De Boeck, H., De Boer, W., De Brabandere, S., De Clercq, C., De Fez Laso, M.D.M., De La Vaissiere, C., De Lotto, B., De Min, A., De Paula, L., De Saint-Jean, C., Dijkstra, H., Di Ciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K.A., Dris, M., Dufour, Y., Dupont, F., Edsall, D., Ehret, R., Ekelof, T., Ekspong, G., Elsing, M., Engel, J.P., Ershaidat, N., Espirito Santo, M., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T.A., Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Fousset, J.L., Franek, B., Frenkiel, P., Fries, D.C., Frodesen, A.G., Fruhwirth, R., Fulda-Quenzer, F., Furstenau, H., Fuster, J., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Gerber, J.P., Gillespie, D., Gokieli, R., Golob, B., Gomez, Y Cadenas J.J., Gopal, G., Gorn, L., Gorski, M., Gracco, V., Grard, F., Graziani, E., Grosdidier, G., Gunnarsson, P., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Haider, S., Hajduk, Z., Hakansson, A., Hallgren, A., Hamacher, K., Hao, W., Harris, F.J., Hedberg, V., Henriques, R., Hernandez, J.J., Hernando, J.A., Herquet, P., Herr, H., Hessing, T.L., Higon, E., Hilke, H.J., Hill, T.S., Holmgren, S.O., Holt, P.J., Holthuizen, D., Honore, P.F., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Ioannou, P., Iversen, P.S., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E.K., Jonsson, L., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E.C., Keranen, R., Khomenko, B.A., Khovanski, N.N., King, B., Kjaer, N.J., Klein, H., Klovning, A., Kluit, P., Kohne, J.H., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P.H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kulka, K., Kurvinen, K., Lacasta, C., Laktineh, I., Lambropoulos, C., Lamsa, J.W., Lanceri, L., Langefeld, P., Lapin, V., Last, I., Laugier, J.P., Lauhakangas, R., Ledroit, F., Lefebure, V., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Levy, J.M., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Lorstad, B., Lokajicek, M., Loken, J.G., Lopez-Fernandez, A., Lopez Aguera, M.A., Loukas, D., Lozano, J.J., Lutz, P., Lyons, L., Maehlum, G., Maillard, J., Maio, A., Maltezos, A., Malychev, V., Mandl, F., Marco, J., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Maron, T., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., Medbo, J., Meroni, C., Meyer, W.T., Michelotto, M., Migliore, E., Mikulec, I., Mirabito, L., Mitaroff, W.A., Mjornmark, U., Moa, T., Moller, R., Monig, K., Monge, M.R., Morettini, P., Muller, H., Murray, W.J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F.L., Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B.S., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschulte-Beckmann, W., Obraztsov, V., Olshevski, A.G., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T.D., Pape, L., Parodi, F., Passeri, A., Pegoraro, M., Pennanen, J., Peralta, L., Perevozchikov, V., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, Stéphane, Podobrin, O., Pol, M.E., Polok, G., Poropat, P., Pozdnyakov, V., Prest, M., Privitera, P., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P.N., Read, A.L., Reale, M., Rebecchi, P., Redaelli, N.G., Regler, M., Reid, D., Renton, P.B., Resvanis, L.K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E.I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, Henri, Schyns, M.A.E., Sciolla, G., Scuri, F., Sedykh, Y., Segar, A.M., Seitz, A., Sekulin, R., Shellard, R.C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A.N., Sitar, B., Skaali, T.B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G.R., Sosnowski, R., Souza-Santos, D., Spassov, T., Spiriti, E., Squarcia, S., Stack, H., Stanescu, C., Stapnes, S., Stavitski, I., Stavropoulos, G., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Chikilev, O., Theodosiou, G.E., Tilquin, A., Timmermans, J., Tkachev, L.G., Todorov, T., Toet, D.Z., Tomaradze, A., Tome, B., Torassa, E., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M.L., Tuuva, T., Tyapkin, I.A., Tyndel, M., Tzamarias, S., Uberschar, B., Uberschar, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Valls Ferrer, J.A., Van Apeldoorn, G.W., Van Dam, P., Van Doninck, W.K., Van Eldik, J., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L.S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A.S., Voutilainen, M., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A.M., Wicke, D., Wickens, J.H., Wielers, M., Wilkinson, G.R., Williams, W.S.C., Winter, M., Witek, M., Wormser, G., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N.I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G.C., Zumerle, G., 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 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), 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, 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 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), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Particle Physics - Experiment
Published: 1995

226. Measurements of the τ polarisation in Z0 decays

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Almeida, F.M.L. Alvsvaag, S.J. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Barbiellini, G. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Beltran, P. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bjarne, J. Bloch, D. Blume, M. Blyth, S. Bocci, V. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bostjancic, B. Bosworth, S. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenner, R.A. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Camacho Rozas, A.J. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Caso, C. Cassio, V. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chliapnikov, P. Chochula, P. Chorowicz, V. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daum, A. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Espirito Santo, M. Fassouliotis, D. Feindt, M. Ferrer, A. Filippas, T.A. Firestone, A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gillespie, D. Gokieli, R. Golob, B. Gopal, G. Gorn, L. Gorski, M. Gracco, V. Grard, F. Graziani, E. Grosdidier, G. Gunnarsson, P. Gunther, M. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Haider, S. Hajduk, Z. Hakansson, A. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Joram, C. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.-H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kurvinen, K. Lacasta, C. Laktineh, I. Lamblot, S. Lambropoulos, C. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Lapin, V. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez, J.M. Lopez-Fernandez, A. Lopez Aguera, M.A. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Maehlum, G. Maio, A. Maltezos, A. Malychev, V. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Medbo, J. Meroni, C. Meyer, W.T. Miagkov, A. Michelotto, M. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Mundim, L.M. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nijjhar, B. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Palka, H. Papadopoulou, Th.D. Pape, L. Parodi, F. Passeri, A. Pegoraro, M. Pennanen, J. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Rybicki, K. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sokolov, A. Sosnowski, R. Souza-Santos, D. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stavropoulos, G. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tavernet, J.P. Tchikilev, O. Theodosiou, G.E. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Torassa, E. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voutilainen, M. Vrba, V. Wahlen, H. Walck, C. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Wormser, G. Woschnagg, K. Yip, K. Yu, L. Yushchenko, O. Zach, F. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Experiment
Abstract: A sample of Z0→τ+τ- events observed in the DELPHI detector at LEP in 1991 and 1992 is analysed to measure the τ polarisation in the exclusive decay channels {Mathematical expression}, {Mathematical expression}, πν, ρν and a1ν. The τ polarisation is also measured with an inclusive hadronic analysis which benefits from a higher efficiency and a better systematic precision than the use of the exclusive decay modes. The results have been combined with those published on the 1990 data. A measurement of the τ polarisation as a function of production angle yields the values for the mean τ polarisation 〈P〉τ=-0.148±0.022 and for the Z0 polarisation PZ=-0.136±0.027. These results are used to determine the ratio of vector to axial-vector effective couplings for taus {Mathematical expression}, and for electrons {Mathematical expression}, compatible with e-τ universality. With the assumption of lepton universality, the ratio of vector to axial-vector effective couplings for leptons {Mathematical expression} is obtained, implying a value of the effective weak mixing angle sin2θefflept=0.2320±0.0021 . © 1995 Springer-Verlag.
Published: 1995

227. PRODUCTION OF CHARGED-PARTICLES, K-S(0),K+/-, P AND LAMBDA IN Z-]B(B)OVER-BAR EVENTS AND IN THE DECAY OF B-HADRONS

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALMEIDA, FML ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A and ANDRIEUX, ML ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B and AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P and BARAO, F BARATE, R BARDIN, DY BARKER, GJ BARONCELLI, A and BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENVENUTI, AC and BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS and BILLOIR, P BJARNE, J BLOCH, D BLUME, M BLYTH, S and BOCCI, V BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S and BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M and BRANCHINI, P BRAND, KD BRENNER, RA BRICMAN, C and BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L and BURAN, T BUYS, A CACCIA, M CALVI, M ROZAS, AJC and CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F and CARENA, F CARRILHO, P CARROLL, L CASO, C CASSIO, V and GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V and CHAN, A CHAPKIN, M CHARPENTIER, P CHAUSSARD, L and CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P and CHOCHULA, P CHOROWICZ, V CHRIN, JTM CINDRO, V COLLINS, P and CONTRERAS, JL CONTRI, R CORTINA, E COSME, G and COSSUTTI, F CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M and DASILVA, W DEFOIX, C DELLARICCA, G DELPIERRE, P DEMARIA, N DEANGELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S and DECLERCQ, C LASO, MDMD DELAVAISSIERE, C DELOTTO, B and DEMIN, A DEPAULA, L DESAINTJEAN, C DIJKSTRA, H and DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DREES, KA DRIS, M DUFOUR, Y and DUPONT, F EDSALL, D EHRET, R EKELOF, T EKSPONG, G and ELSING, M ENGEL, JP ERSHAIDAT, N SANTO, ME FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA FIRESTONE, A and FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FOUSSET, JL FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG and FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D and GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U and GAVILLET, P GAZIS, EN GELE, D GERBER, JP GILLESPIE, D GOKIELI, R GOLOB, B CADENAS, JJGY GOPAL, G GORN, L and GORSKI, M GRACCO, V GRARD, F GRAZIANI, E GROSDIDIER, G GUNNARSSON, P GUY, J HAEDINGER, U HAHN, F HAHN, M and HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERNANDO, JA HERQUET, P HERR, H and HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO and HOLT, PJ HOLTHUIZEN, D HONORE, PF HOULDEN, M HRUBEC, J and HUET, K HULTQVIST, K IOANNOU, P JACKSON, JN and JACOBSON, R JALOCHA, P JANIK, R JARLSKOG, G JARRY, P and JEANMARIE, B JOHNSSON, EK JONSSON, L JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA and KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A and KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M and KORCYL, K KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O and KRAMER, PH KRAMMER, M KREUTER, C KROLIKOWSKI, J and KRONKVIST, I KRUMSTEIN, Z KRUPINSKI, W KUBINEC, P and KUCEWICZ, W KULKA, K KURVINEN, K LACASTA, C LAKTINEH, I and LAMBLOT, S LAMBROPOULOS, C LAMSA, JW LANCERI, L and LANE, DW LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP and LAUHAKANGAS, R LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK and LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G and LEPELTIER, V LESIAK, T LIKO, D LINDNER, R LIPNIACKA, A and LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG and LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MAIO, A MALTEZOS, A MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T and MARTINEZRIVERO, C MARTINEZVIDAL, F GARCIA, SMI MATORRAS, F and MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M and MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT and MICHELOTTO, M MIGLIORE, E MIKULEC, I MIRABITO, L and MITAROFF, WA MJOERNMARK, U MOA, T MOELLER, R MOENIG, K and MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P and NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R and NIELSEN, BS NIKOLAENKO, V NISS, P NOMEROTSKI, A NORMAND, A OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG and ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M and PAGES, P PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F and PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L and PEREVOZCHIKOV, V PERNEGGER, H PERNICKA, M PERROTTA, A and PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F and PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME and POLOK, G POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P and PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK and RICHARD, F RICHARDSON, R RIDKY, J RINAUDO, G RIPP, I and ROMERO, A RONCAGLIOLO, I RONCHESE, P RONJIN, V ROOS, L and ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T and RUCHKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A SAARIKKO, H and SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J and SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F and SEDYKH, Y SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC and SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N and SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D and SPASSOV, T SPIRITI, E SPONHOLZ, P SQUARCIA, S STAECK, H and STANESCU, C STAPNES, S STAVITSKI, I STAVROPOULOS, G and STEPANIAK, K STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T and TAVERNET, JP TCHIKILEV, O THEODOSIOU, GE TILQUIN, A and TIMMERMANS, J TKATCHEV, LG TODOROV, T TOET, DZ and TOMARADZE, A TOME, B TORASSA, E TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TROMBINI, A and TRONCON, C TSIROU, A TURLUER, ML TYAPKIN, IA TYNDEL, M and TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O and UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VANELDIK, J and VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M and VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOUTILAINEN, M VRBA, V WAHLEN, H and WALCK, C WALDNER, F WEHR, A WEIERSTALL, M WEILHAMMER, P and WETHERELL, AM WICKE, D WICKENS, JH WIELERS, M and WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YU, L YUSHCHENKO, O ZACH, F and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D and ZEVGOLATAKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R and ZUCCHELLI, GC ZUMERLE, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A sample of events enriched in quark pairs was selected in the data recorded by the DELPHI experiment at LEP during 1992 and 1993, by the presence of secondary decay vertices from short-lived particles. Using this sample, the average multiplicities of K-S(0), K-+/-, p((p) over bar), Lambda() and of charged particles in events have been measured, distinguishing the component from fragmentation and the component coming from the decay of b-hadrons. The measurement of the average charge multiplicity in events was used to compute the mean fractional beam energy carried by the primary b-hadron, and the difference in charged particle multiplicity between events and light quark (, , ) events.
Published: 1995

228. Measurement of the forward-backward asymmetry of e$^+$e$^- \rightarrow$ Z $\rightarrow$ b$\overline{b}$ using prompt leptons and a lifetime tag

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Azhinenko, I., Aleksan, R., Alekseev, G.D., Allport, P., Almehed, S., Almeida, F.M.L., Alvsvaag, S.J., Amaldi, U., Andreazza, A., Antilogus, P., Apel, W.D., Apsimon, R.J., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbiellini, Guido, Bardin, D.Yu., Barker, G., Baroncelli, A., Barring, O., Barrio, J.A., Bartl, W., Bates, M.J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K.H., Begalli, M., Beilliere, P., Belokopytov, Yu., Beltran, P., Benvenuti, A.C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenkii, M.S., Billoir, P., Bjarne, J., Bloch, D., Blyth, S., Bocci, V., Bogolyubov, P., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P.S.L., Borisov, G., Bosio, C., Bostjancic, B., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Bozzo, M., Braibant, S., Branchini, P., Brand, K.D., Brenner, R.A., Briand, H., Bricman, C., Brillault, L., Brown, R.C.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., Camacho Rozas, A.J., Campion, R., Camporesi, T., Canale, V., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Cases, R., Caso, C., Cassio, V., Castillo Gimenez, M.V., Cattai, A., Cavallo, F.R., Cerrito, L., Chabaud, V., Chan, A., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G.A., Chliapnikov, P., Chorowicz, V., Chrin, J.T., Cindro, V., Collins, P., Contreras, J.L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Couchot, F., Crawley, H.B., Crennell, D., Crosetti, G., Cuevas Maestro, J., Czellar, S., Dahl-Jensen, E., Dahm, J., D'Almagne, B., Dam, M., Damgaard, G., Daubie, E., Daum, A., Dauncey, P.D., Davenport, M., Davies, J., Da Silva, W., Defoix, C., Della Ricca, G., Delpierre, P., Demaria, N., De Angelis, A., De Boeck, H., De Boer, W., De Brabandere, S., De Clercq, C., De Fez Laso, M.D.M., De La Vaissiere, C., De Lotto, B., De Min, A., De Paula, L., De Saint-Jean, C., Dijkstra, H., Di Ciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Dris, M., Dufour, Y., Dupont, F., Ehret, R., Ekelof, T., Ekspong, G., Elsing, M., Engel, J.P., Ershaidat, W., Espirito Santo, M., Fassouliotis, D., Feindt, M., Ferrer, A., Filippas, T.A., Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Fousset, J.L., Franek, B., Frenkiel, P., Fries, D.C., Frodesen, A.G., Fruhwirth, R., Fulda-Quenzer, F., Furstenau, H., Fuster, J., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Gerber, J.P., Gerdyukov, L., Giacomelli, P., Gillespie, D., Gokieli, R., Golob, B., Golovatyuk, V.M., Gomez, Y Cadenas J.J., Gopal, G., Gorn, L., Gorski, M., Gracco, V., Grard, F., Graziani, E., Grosdidier, G., Gunnarsson, P., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Haider, S., Hajduk, Z., Hakansson, A., Hallgren, A., Hamacher, K., Hao, W., Harris, F.J., Hedberg, V., Henriques, R., Hernandez, J.J., Hernando, J.A., Herquet, P., Herr, H., Hessing, T.L., Higon, E., Hilke, H.J., Hill, T.S., Holmgren, S.O., Holt, P.J., Holthuizen, D., Honore, P.F., Houlden, M., Hrubec, J., Huet, C., Hultqvist, K., Ioannou, P., Iversen, P.S., Jackson, J.N., Jacobsson, R., Jalocha, P., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E.K., Jonsson, L., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E.C., Keranen, R., Khomenko, B.A., Khovanski, N.N., King, B., Kjaer, N.J., Klein, H., Klovning, A., Kluit, P., Koch-Mehrin, A., Kohne, J.H., Koene, B., Kokkinias, P., Koratzinos, M., Korytov, A.V., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P.H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krupinski, W., Kucewicz, W., Kulka, K., Kurvinen, K., Lacasta, C., Laktineh, I., Lambropoulos, C., Lamsa, J.W., Lanceri, L., Langefeld, P., Lapin, V., Last, I., Laugier, J.P., Lauhakangas, R., Leder, G., Ledroit, F., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Levy, J.M., Lieb, E., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Lorstad, B., Lokajicek, M., Loken, J.G., Lopez-Fernandez, A., Lopez Aguera, M.A., Los, M., Loukas, D., Lozano, J.J., Lutz, P., Lyons, L., Maehlum, G., Maillard, J., Maio, A., Maltezos, A., Mandl, F., Marco, J., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Maron, T., Marti, S., Martinez-Rivero, C., Martinez-Vidal, F., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., Medbo, J., Meroni, C., Meyer, W.T., Myagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W.A., Mitselmakher, G., Mjornmark, U., Moa, T., Moller, R., Monig, K., Monge, M.R., Morettini, P., Muller, H., Murray, W.J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F.L., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B.S., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Obraztsov, V., Olshevski, A.G., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pain, R., Palka, H., Papadopoulou, T., Pape, L., Parodi, F., Passeri, A., Pegoraro, M., Pennanen, J., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, Stéphane, Podobrin, O., Pol, M.E., Polok, G., Poropat, P., Pozdnyakov, V., Prest, M., Privitera, P., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P.N., Read, A.L., Reale, M., Rebecchi, P., Redaelli, N.G., Regler, M., Reid, D., Renton, P.B., Resvanis, L.K., Richard, F., Richardson, M., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E.I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, Henri, Schyns, M.A.E., Sciolla, G., Scuri, F., Segar, A.M., Seitz, A., Sekulin, R., Seufert, R., Shellard, R.C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A.N., Skaali, T.B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G.R., Sokolov, A., Sosnowski, R., Souza-Santos, D., Spassov, T.S., Spiriti, E., Squarcia, S., Stack, H., Stanescu, C., Stapnes, S., Stavitski, I., Stavropoulos, G., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Straver, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Chikilev, O., Theodosiou, G., Thome, Z., Tilquin, A., Timmermans, J., Timofeev, V.G., Tkatchev, L.G., Todorov, T., Toet, D.Z., Tomaradze, A., Tome, B., Torassa, E., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Troncon, C., Tsirou, A., Tsyganov, E.N., Turluer, M.L., Tuuva, T., Tyapkin, I.A., Tyndel, M., Tzamarias, S., Uberschar, B., Uberschar, S., Ullaland, O., Uvarov, V.A., Valenti, G., Vallazza, E., Valls Ferrer, J.A., Vander Velde, C., Van Apeldoorn, G.W., Van Dam, P., Van Der Heijden, M., Van Doninck, W.K., Van Eldik, J., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L.S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A.S., Vollmer, M., Voutilainen, M., Vrba, V., Wahlen, H., Walck, C., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A.M., Wickens, J.H., Wielers, M., Wilkinson, G.R., Williams, W.S.C., Winter, M., Witek, Mm., Wormser, G., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N.I., Zito, M., Zontar, D., Zuberi, R., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de 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), 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), 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), 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), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université 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 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 Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published: 1995

229. FIRST EVIDENCE OF HARD SCATTERING PROCESSES IN SINGLE TAGGED GAMMA-GAMMA-COLLISIONS

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALMEIDA, FML ALVSVAAG, SJ AMALDI, U ANDREAZZA, A ANDRIEUX, ML and ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE and AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARKER, GJ BARONCELLI, A and BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M and BEILLIERE, P BELTRAN, P BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P and BJARNE, J BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN and BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL and BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O and BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M and BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H and BRICMAN, C BRILLAULT, L BROWN, RCA BRUNET, JM BUGGE, L BURAN, T BUYS, A CACCIA, M CALVI, M CAMACHOROZAS, AJ CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L CASO, C CASSIO, V and CASTILLOGIMENEZ, MV CATTAI, A CAVALLO, FR CERRITO, L and CHABAUD, V CHAN, A CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOROWICZ, V and CHRIN, JTM CINDRO, V COLLINS, P CONTRERAS, JL and CONTRI, R CORTINA, E COSME, G COUCHOT, F CRAWLEY, HB and CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S and DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G and DAUBIE, E DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W and DEFOIX, C DELPIERRE, P DEMARIA, N DEANGELIS, A and DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERCQ, C and DEFEZLASO, MDM DELAVAISSIERE, C DELOTTO, B DEMIN, A and DEPAULA, L DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L and DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M and DREES, J DRIS, M DUFOUR, Y DUPONT, F EDSALL, D and EHRET, R EKELOF, T EKSPONG, G ELSING, M ENGEL, JP and ERSHAIDAT, N SANTO, ME FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORMENTI, F FOUSSET, JL FRANEK, B and FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D and GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U and GAVILLET, P GAZIS, EN GELE, D GERBER, JP GILLESPIE, D GOKIELI, R GOLOB, B GOLOVATYUK, VM CADENAS, JJGY and GOPAL, G GORN, L GORSKI, M GRACCO, V GRARD, F and GRAZIANI, E GROSDIDIER, G GUNNARSSON, P GUY, J and HAEDINGER, U HAHN, F HAHN, M HAHN, S HAIDER, S and HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K HAO, W and HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ and HERNANDO, JA HERQUET, P HERR, H HESSING, TL HIGON, E and HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D and HONORE, PF HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K and IOANNOU, P IVERSEN, PS JACKSON, JN JACOBSSON, R and JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONSSON, L JUILLOT, P KAISER, M KALMUS, G and KAPUSTA, F KARLSSON, M KARVELAS, E KATARGIN, A and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA and KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A and KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P and KORATZINOS, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V and KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KREUTER, C and KROLIKOWSKI, J KRONKVIST, I KRUPINSKI, W KULKA, K and KURVINEN, K LACASTA, C LAKTINEH, I LAMBROPOULOS, C and LAMSA, JW LANCERI, L LANGEFELD, P LAPIN, V LAST, I and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LESIAK, T LEVY, JM LIEB, E LIKO, D LINDNER, R and LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG and LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D and LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J and MAIO, A MALTEZOS, A MANDL, F MARCO, J MARECHAL, B and MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T and MARTI, S MARTINEZRIVERO, C MARTINEZVIDAL, F MATORRAS, F and MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT MIAGKOV, A and MICHELOTTO, M MIGLIORE, E MIKULEC, I MIRABITO, L and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL and NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIKOLAENKO, V NISS, P and NOMEROTSKI, A NORMAND, A OBRAZTSOV, V OLSHEVSKI, AG and ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M and PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F and PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L and PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C and PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F PIMENTA, M and PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G and POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P PULLIA, A and RADOJICIC, D RAGAZZI, S RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P RADAELLI, NG and REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F and RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I ROMERO, A and RONCAGLIOLO, I RONCHESE, P ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V and RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G and SALT, J SANCHEZ, J SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEITZ, A SEKULIN, R SESSA, M SEUFERT, R SHELLARD, RC SICCAMA, I and SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN and SKAALI, TB SMADJA, G SMIRNOVA, O SMITH, GR SOKOLOV, A and SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T SPIRITI, E and SCUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, I STAVROPOULOS, G STEPANIAK, K STICHELBAUT, F STOCCHI, A and STRAUSS, J STRAVER, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T TCHIKILEV, O THEODOSIOU, GE and THOME, Z TILQUIN, A TIMMERMANS, J TIMOFEEV, VG and TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B and TORASSA, E TORTORA, L TRANSTROMER, G TREILLE, D and TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M TURLUER, ML TUUVA, T TYAPKIN, IA and TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VANELDIK, J VEGNI, G VENTURA, L VENUS, W VERBEURE, F and VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P and VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM and WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC and WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K and YUSHCHENKO, O ZACH, F ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZAVRTANIK, D ZEVGOLATAKOS, E ZIMIN, NI ZITO, M and ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G
Subjects: High Energy Physics::Lattice, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: For the first time, multihadronic production from single tagged gamma gamma collisions has been studied, where one of the scattered leptons was tagged at very low virtual photon absolute mass squared ([Q(2)] = 0.06 (GeV/c(2))(2)). Data collected during 1991 and 1992 in the DELPHI experiment at LEP are shown to agree well with predictions which included the non-perturbative vector meson dominance model in which the interacting photons are assumed to have converted into a vector meson (rho, omega or pi), a quark-parton model which describes direct photon interactions and a QCD-based model which considers the photon to have quark and gluon structure functions. Five different parametrizations of these structure functions were used and the predictions compared with the data. This study confirms recent results from no-tag experiments in requiring a QCD-based component to successfully describe the data, indicating that the photon has a significant partonic content.
Published: 1995

230. SEARCH FOR HEAVY NEUTRAL HIGGS BOSONS IN 2-DOUBLET MODELS

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Allport, P. P., Almehed, S., Almeida, F. M. L., Alvsvaag, S. J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbiellini, G., Bardin, D. Y., Barker, G. J., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Beltran, P., Benvenuti, A. C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bjarne, J., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P. S. L., Borisov, G., Bosio, C., Bostjancic, B., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenner, R. A., Briand, H., Bricman, C., Brillault, L., Brown, R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., Rozas, A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., Cassio, V., Gimenez, M. V. C., Cattai, A., Cavallo, F. R., Cerrito, L., Chabaud, V., Chan, A., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chliapnikov, P., Chochula, P., Chorowicz, V., Chrin, J. T. M., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboeck, H., Deboer, W., Debrabandere, S., Declercq, C., Laso, Mdmd, Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Dufour, Y., Dupont, F., Edsall, D., Ehret, R., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Ershaidat, N., Santo, M. E., Falaleev, V., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T. A., Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Fousset, J. L., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Furstenau, H., Fuster, J., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gerdyukov, L., Gillespie, D., Gokieli, R., Golob, B., Gomez, J. J., Cadenas, Y., Gopal, G., Gorn, L., Gorski, M., Gracco, V., Grard, F., Graziani, E., Grosdidier, G., Gunnarsson, P., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Haider, S., Hajduk, Z., Hakansson, A., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Hernando, J. A., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Honore, P. F., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Ioannou, P., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koehne, J. H., Koene, B., Kokkinias, P., Koratzinos, M., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kulka, K., Kurvinen, K., Lacasta, C., Laktineh, I., Lambropoulos, C., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Levy, J. M., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, J. G., Lopezfernandez, A., Aguera, M. A. L., Los, M., Loukas, D., Lozano, J. J., Lutz, P., Lyons, L., Maehlum, G., Maillard, J., Maio, A., Maltezos, A., Malychev, V., Mandl, F., Marco, J., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., Garcia, S. M. I., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Meroni, C., Meyer, W. T., Michelotto, M., Migliore, E., Mikulec, I., Mirabito, L., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T. D., Pape, L., Parodi, F., Passeri, A., Pegoraro, M., Pennanen, J., Peralta, L., Perevozchikov, V., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Alessandro Petrolini, Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, H., Schyns, M. A. E., Sciolla, G., Scuri, F., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnova, O., Smith, G. R., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Squarcia, S., Staeck, H., Stanescu, C., Stapnes, S., Stavitski, I., Stavropoulos, G., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tchikilev, O., Theodosiou, G. E., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Toet, D. Z., Tomaradze, A., Tome, B., Torassa, E., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tuuva, T., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ueberschaer, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Ferrer, J. A. V., Vandervelde, C., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Voutilainen, M., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., Williams, W. S. C., Winter, M., Witek, M., Wormser, G., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G. C., and Zumerle, G.
Subjects: Higgs boson, DELPHI, b tagging, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Z0 DECAYS, MASS
Abstract: A search for pair production of neutral heavy Higgs bosons decaying into {Mathematical expression} has been carried out in a study of hadronic decays of the Z boson into four jet final states using data taken by DELPHI in 1991 and 1992. The two production mechanisms present in the two Higgs doublets scheme, bremsstrahlung production of hZ* and associated production of hA, may lead to four beauty jets well recognizable using the precise microvertex detector measurements. No evidence for a signal was found, leading to limits on BR(Z→hA→4b) from 3.5 to 5.5×10-4 at 95% contidence level, depending on the mass of the ligthest Higgs. When combined with the results of the recent DELPHI standard Higgs search, this result allows the kinematical limit to be reached for the masses of h and A in the minimal supersymmetric extension of the Standard Model (MSSM) scheme. It also allows the tanβ≤1 domain to be explored, and a region above the kinematic limit for direct hA production is constrained by considering virtual hA production. Results are also given in the general two-doublet scheme. © 1995 Springer-Verlag.
Published: 1995

231. Measurement of the forward-backward asymmetry of charm and bottom quarks at the Z pole using D*± mesons

Author: Abreu, P. Adam, W. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Almeida, F.M.L. Alvsvaag, S.J. Amaldi, U. Andreazza, A. Andrieux, M.L. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Beltran, P. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bjarne, J. Bloch, D. Blume, M. Blyth, S. Bocci, V. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bostjancic, B. Bosworth, S. Botner, O. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenner, R.A. Briand, H. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Camacho Rozas, A.J. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Caso, C. Cassio, V. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Chan, A. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chliapnikov, P. Chochula, P. Chorowicz, V. Chrin, J.T.M. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Couchot, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daum, A. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Dellaricca, G. Ricca, G.D. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clereq, C. De Fez Laso, M.D.M. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, A. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Santo, M.E. Fassouliotis, D. Feindt, M. Fenyuk, A. Ferrer, A. Filippas, T.A. Firestone, A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Fousset, J.-L. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gillespie, D. Gokieli, R. Golob, B. Gomez Y Cadenas, J.J. Gopal, G. Gorn, L. Gorski, M. Gracco, V. Grard, F. Graziani, E. Grosdidier, G. Gunnarsson, P. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Haider, S. Hajduk, Z. Hakansson, A. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Hernando, J.A. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Honore, P.F. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Iversen, P.-S. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katargin, A. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.M. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.-H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kulka, K. Kurvinen, K. Lacasta, C. Laktineh, I. Lambropoulos, C. Lamsa, J.W. Lanccri, L. Langefeld, P. Lapin, V. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Lemoigne, R.L.Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Levy, J.M. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez-Fernandez, A. Lopez Aguera, M.A. Loukas, D. Lozano, J.J. Lutz, P. Lyons, L. Maehlum, G. Maillard, J. Maio, A. Maltezos, A. Malychev, V. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Kay, M.M. Kay, R.M. Nulty, R.M. Medbo, J. Meroni, C. Meyer, W.T. Michelotto, M. Migliore, E. Mikulec, I. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pain, R. Palka, H. Papadopoulou, Th.D. Pape, L. Parodi, F. Passeri, A. Pegoraro, M. Pennanen, J. Peralta, L. Perevozchikov, V. Pernegger, H. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Ronjin, V. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stavropoulos, G. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tchikilev, O. Theodosiou, G.E. Thome, Z. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Torassa, E. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Troncon, C. Tsirou, A. Turleur, M.-L. Tuuva, T. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Valenti, G. Vallazza, E. Valls Ferrer, J.A. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voutilainen, M. Vrba, V. Wahlen, H. Walck, C. Waldner, F. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Wormser, G. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The forward-backward asymmetries for the processes {Mathematical expression} and {Mathematical expression} at the Z resonance are measured using identified D*± mesons. In 905,000 selected hadronic events, taken in 1991 and 1992 with the DEL-PHI detector at LEP, 4757 D*+→D0π+ decays are reconstructed. The c and b quark forward-backward asymmetries are determined to be: {Mathematical expression} Constraining the b asymmetry to the value measured by DELPHI using independent analyses, the charm asymmetry is determined to be: {Mathematical expression}. This result corresponds to an effective electroweak mixing angle measured using charm quark events of: {Mathematical expression} © 1995 Springer-Verlag.
Published: 1995

232. SEARCH FOR EXCLUSIVE CHARMLESS B-MESON DECAYS WITH THE DELPHI DETECTOR AT LEP

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML and ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTINUS, A and BAILLON, P BAMBADE, P BARAO, F BARATE, R and BARBIELLINI, G BARDIN, DY BARKER, GJ BARONCELLI, A and BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P and BLOCH, D BLUME, M BLYTH, S BOCCI, V BOLOGNESE, T and BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C and BOSWORTH, S BOTNER, O BOUDINOV, E BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENKE, T BRENNER, RA BRICMAN, C BRILLAULT, L and BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T and BURGSMUELLER, T BUSCHMANN, P BUYS, A CACCIA, M CALVI, M and ROZAS, AJC CAMPORESI, T CANALE, V CANEPA, M and CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L and CASO, C GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L and CHABAUD, V CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J and CHECCHIA, P CHELKOV, GA CHIERICI, R CHLIAPNIKOV, P and CHOCHULA, P CHOROWICZ, V CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F and CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W and DEFOIX, C DELLARICCA, G DELPIERRE, P DEMARIA, N and DEANGELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S and DECLERCQ, C DELAVAISSIERE, C DELOTTO, B DEMIN, A and DEPAULA, L DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L and DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M and DREES, J DREES, KA DRIS, M DUFOUR, Y DUPONT, F and EDSALL, D EHRET, R EIGEN, G EKELOF, T EKSPONG, G and ELSING, M ENGEL, JP ERSHAIDAT, N ERZEN, B SANTO, ME and FALK, E FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA and FIRESTONE, A FISCHER, PA FOETH, H FOKITIS, E and FONTANELLI, F FORMENTI, F FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GALLONI, A GAMBA, D GANDELMAN, N GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P and GAZIS, EN GELE, D GERBER, JP GERDYUKOV, L GIBBS, M and GILLESPIE, D GOKIELI, R GOLOB, B GOPAL, G GORN, L and GORSKI, M GOUZ, Y GRACCO, V GRAZIANI, E GROSDIDIER, G and GUNNARSSON, P GUNTHER, M GUY, J HAEDINGER, U HAHN, F and HAHN, M HAHN, S HAJDUK, Z HALLGREN, A HAMACHER, K and HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ and HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D and HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P and JACKSON, JN JACOBSSON, R JALOCHA, P JANIK, R JARLSKOG, G and JARRY, P JEANMARIE, B JOHANSSON, EK JONSSON, L and JONSSON, P JORAM, C JUILLOT, P KAISER, M KALMUS, G and KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN and KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P and KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KRAMMER, M KREUTER, C KROLIKOWSKI, J KRONKVIST, I and KRUMSTEIN, Z KRUPINSKI, W KUBINEC, P KUCEWICZ, W and KURVINEN, K LACASTA, C LAKTINEH, I LAMBLOT, S LAMSA, JW and LANCERI, L LANE, DW LANGEFELD, P LAST, I LAUGIER, JP and LAUHAKANGAS, R LEDER, G LEDROIT, F LEFEBURE, V and LEGAN, CK LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G and LEPELTIER, V LESIAK, T LIKO, D LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZ, JM LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LUTZ, P and LYONS, L MACNAUGHTON, J MAEHLUM, G MALYCHEV, V MANDL, F and MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C MARTINEZVIDAL, F and GARCIA, SMI MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J and MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E and MIRABITO, L MITAROFF, WA MJOERNMARK, U MOA, T MOELLER, R and MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MUNDIM, LM MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W and NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIEUWENHUIZEN, M and NIKOLAENKO, V NISS, P NOMEROTSKI, A NORMAND, A and OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG ONOFRE, A and ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P and PAGANONI, M PAGES, P PALKA, H PAPADOPOULOU, TD PAPE, L and PARKES, C PARODI, F PASSERI, A PEGORARO, M PERALTA, L PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C and PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, P PIMENTA, M and PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G and POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P PUKHAEVA, N PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H and RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P and REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK and RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I and ROMERO, A RONCAGLIOLO, I RONCHESE, P ROOS, L and ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A SAARIKKO, H SACQUIN, Y and SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J SANNINO, M and SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEDYKH, Y and SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN and SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N SMIRNOVA, O and SMITH, GR SOKOLOV, A SOLOVYANOV, O SOSNOWSKI, R and SOUZASANTOS, D SPASSOV, T SPIRITI, E SPONHOLZ, P and SQUARCIA, S STANESCU, C STAPNES, S STAVITSKI, I and STEPANIAK, K STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T and TAVERNET, JP TCHIKILEV, O TILQUIN, A TIMMERMANS, J and TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B and TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W and TRISTRAM, G TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML and TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B and ULLALAND, O UVAROV, V VALENTI, G VALAZZA, E VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WL VANELDIK, J and VASSILOPOULOS, N VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D and VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VRBA, V and WAHLEN, H WALCK, C WEIERSTALL, M WEILHAMMER, P and WETHERELL, AM WICKE, D WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WOSCHNAGG, K and YIP, K YUSHCHENKO, O ZACH, F ZACHARATOU, C ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZIMIN, NI and ZITO, M ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G
Subjects: High Energy Physics::Experiment
Abstract: Charmless hadronic decays of beauty mesons have been searched for using the data collected with the DELPHI detector at the LEP collider. Several two, three and four-body decay modes have been investigated. Particle identification was used to distinguish the final states with protons, kaons and pious. Three candidate events selected in two-body decay modes are interpreted as evidence for charmless B decays. No excess has been found in higher multiplicity modes and improved upper limits for some of the branching ratios are given.
Published: 1995

233. Upper Limits On the Branching Ratios Tau-]mu-gamma and Tau-]e-gamma

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, Gd, Allport, Pp, Almehed, S, Alvsvaag, Sj, Amaldi, U, Amato, S, Andreazza, A, Andrieux, Ml, Antilogus, P, Apel, Wd, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbiellini, G, Bardin, Dy, Barker, Gj, Baroncelli, A, Barring, O, Barrio, Ja, Bartl, W, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Belokopytov, Y, Benvenuti, Ac, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bloch, D, Blume, M, Blyth, S, Bocci, V, Bolognese, T, Bonesini, M, Bonivento, W, Booth, Psl, Borisov, G, Bosio, C, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozzo, M, Brnachini, P, Brand, Kd, Brenke, T, Brenner, Ra, Bricman, C, Brillault, L, Brown, Rca, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Buys, A, Caccia, Massimo, Calvi, M, Rozas, Ajc, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carrilho, P, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Cerrito, L, Chabaud, V, Chapkin, M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, Ga, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Cindro, V, Collins, P, Contreras, Jl, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahljensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Daum, A, Dauncey, Pd, Davenport, M, Dasilva, W, Defoix, C, Dellaricca, G, Delpierre, P, Demaria, N, Deangelis, A, Deboeck, H, Deboer, W, Debrabandere, S, Declercq, C, Delavaissiere, C, Delotto, B, Demin, A, Depaula, L, Desaintjean, C, Dijkstra, H, Diciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, Ka, Dris, M, Dufour, Y, Dupont, F, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Ershaidat, N, Erzen, B, Santo, Me, Falk, E, Fassouliotis, D, Feindt, M, Ferrer, A, Filippas, Ta, Firestone, A, Fischer, Pa, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Gibbs, M, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, Y, Graziani, E, Grosdidier, G, Gunnarsson, P, Gunther, M, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, Fj, Hedberg, V, Henriques, R, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Higon, E, Hilke, Hj, Hill, Ts, Holmgren, So, Holt, Pj, Holthuizen, D, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Ioannou, P, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klein, H, Klovning, A, Kluit, P, Koehne, Jh, Koene, B, Kokkinias, P, Koratzinos, M, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, Ph, Krammer, M, Kreuter, C, Krolikowski, J, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, Jw, Lanceri, L, Lane, Dw, Langefeld, P, Lapin, V, Last, I, Laugier, Jp, Lauhakangas, R, Ledroit, F, Lefebure, V, Legan, Ck, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, Jg, Lopez, Jm, Lopezfernandez, A, Aguera, Mal, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Maron, T, Martinezrivero, C, Martinezvidal, F, Garcia, Smi, Marvik, K, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Medbo, J, Meroni, C, Meyer, Wt, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Wa, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Mundim, Lm, Murray, Wj, Muryn, B, Myatt, G, Naraghi, F, Navarria, Fl, Navas, S, Negri, P, Nemecek, S, Neuman, W, Neumeister, N, Nicolaidou, R, Nielsen, Bs, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Oberschultebeckmann, W, Obraztsov, V, Olshevski, Ag, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Palka, H, Papadopoulou, Td, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, Ht, Piana, G, Pierre, F, Pimenta, M, Pindo, M, Plaszczynski, S, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Prest, Michela, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, Ei, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schneider, H, Schyns, Mae, Sciolla, G, Scuri, F, Sedykh, Y, Segar, Am, Seitz, A, Sekulin, R, Shellard, Rc, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, An, Sitar, B, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, S, Stavitski, I, Stepaniak, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, Jp, Tchikilev, O, Tilquin, A, Timmermans, J, Tkatchev, Lg, Todorov, T, Toet, Dz, Tomaradze, A, Tome, B, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vandoninck, Wk, Vaneldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vrba, V, Wahlen, H, Walck, C, Weierstall, M, Weilhammer, P, Wetherell, Am, Wicke, D, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yushchenko, O, Zach, F, Zacharatou, C, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zito, M, Zontar, D, Zuberi, R, Zucchelli, Gc, and Zumerle, G.
Subjects: DELPHI, tau decay, lepton, DECAYS, LEPTON, SEARCH, MASS, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: The DELPHI collaboration has searched for lepton flavour violating decays \tau \rightarrow \mu \gamma and \tau \rightarrow e \gamma using a data sample of about 70~pb^{-1} of integrated luminosity corresponding to 81 000 produced \tau^+ \tau^- events. No candidates were found for either of the two modes. This yields branching ratio upper limits of \rm{B}( \tau \rightarrow e \gamma ) < 1.1 \times 10^{-4} and \rm{B} ( \tau \rightarrow \mu \gamma) < 6.2 \times 10^{-5} at 90\% confidence level.
Published: 1995

234. Upper limits on the branching ratios $\tau\rightarrow \mu\gamma$ and $\tau\rightarrow$ e$\gamma$

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Allport, P. P., Almehed, S., Alvsvaag, S. J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. -E, Augustinus, A., Baillon, P., Bambade, P., Barate, R., Barbiellini, Guido, Bardin, D. Yu, Barker, G. J., Baroncelli, A., Baerring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Yu, Benvenuti, A. C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P. S. L., Borisov, G., Bosio, C., Bosworth, S., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., Brillault, L., Brown, R. C. A., Brueckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Caccia, M., Calvi, M., Camacho Rozas, A. J., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., Castillo-Gimenez, M. V., Cattai, A., Cavallo, F. R., Cerrito, L., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chierici, R., Chliapnikovp, V., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Dahl-Jensen, E., Dahm, J., D Almagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P. D., Davenport, M., Da Silva, W., Defoix, C., Della Ricca, G., Delpierre, P. A., Demaria, N., Deangelis, A., Boeck, H., Boer, W., Brabandere, S., Clercq, C., La Vaissiere, C., Lotto, B., Min, A., Paula, L., Saint-Jean, C., Dijkstra, H., Di Ciaccio, L., Djama, F., Dolbeau, J., Doenszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Dufour, Y., Dupont, F., Edsall, D., Ehret, R., Eigen, G., Ekeloef, T., Ekspong, G., Elsing, M., Engel, J. P., Ershaidat, N., Erzen, B., Espirito-Santo, M., Falk, E., Fassouliotis, D., Feindt, M., Ferrer, A., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruehwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gelé, D., Gerber, J. P., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Guz, Yu, Gracco, V., Graziani, E., Grosdidier, G., Gunnarsson, P., Gunther, M., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgrens, O., Holt, P. J., Holthuizen, D., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Ioannou, P., Jackson, Jn, Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keraenen, R., Khomenko, B. A., Khovanskii, N. N., King, B., Kjaern, J., Klein, H., Klovning, A., Kluit, P., Koehne, J. H., Koene, B., Kokkinias, P., Koratzinos, M., Kostyukhin, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumshtein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Last, I., Laugier, J. P., Lauhakangas, R., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, J. G., Lopez, J. M., Lopez-Fernandez, A., Lopez-Agueram, A., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., Malychev, V., Mandl, F., Marco, J., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I. Garcia S., Marvik, K., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Meroni, C., Meyer, W. T., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Francesco Luigi Navarria, Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschulte-Beckmann, W., Obraztsov, V., Olshevski, A. G., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Pindo, M., Plaszczynski, Stéphane, Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Reada, L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmann-Kleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, H., Schyns, M. A. E., Sciolla, G., Scuri, F., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R. L., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sissakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O. G., Smith, G. R., Sosnowski, R., Souza-Santos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Chikilev, O., Tilquin, A., Tkatchev, L. G., Todorov, T., Toet, D. Z., Tomaradze, A., Tome, B., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, Ia, Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., Apeldoorn, G. W., Dam, P., Doninck, W., Eldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weilhammer, P., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., Williams, W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zacharatou, C., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G. C., Zumerle, G., 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 Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), 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), 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), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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 Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and 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)
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment
Abstract: The DELPHI collaboration has searched for lepton flavour violating decays \tau \rightarrow \mu \gamma and \tau \rightarrow e \gamma using a data sample of about 70~pb^{-1} of integrated luminosity corresponding to 81 000 produced \tau^+ \tau^- events. No candidates were found for either of the two modes. This yields branching ratio upper limits of \rm{B}( \tau \rightarrow e \gamma ) 1.1 \times 10^{-4} and \rm{B} ( \tau \rightarrow \mu \gamma) 6.2 \times 10^{-5} at 90\% confidence level.
Published: 1995

235. Strange baryon production in Z hadronic decays

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Alvsvaag, S.J. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Anykeyev, V. Apel, W.D. Arnoud, Y. Åsman, B. Augustin, J.E. Augustinus, A. Baillon, P. Bambade, P. Barate, R. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.H. Begalli, M. Beilliere, P. Belokopytov, Yu. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bloch, D. Blume, M. Blyth, S. Bocci, V. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bosworth, S. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenner, R.A. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Camacho Rozas, A.J. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Caso, C. Cassio, V. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chliapnikov, P. Chochula, P. Chorowicz, V. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daum, A. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Diama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.A. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.P. Ershaidat, N. Erzen, B. Espirito Santo, M. Falk, E. Fassouliotis, D. Feindt, M. Ferrer, A. Filippas, T.A. Firestone, A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.P. Gillespie, D. Gokieli, R. Golob, B. Gopal, G. Gorn, L. Gorski, M. Gouz, Y. Gracco, V. Grard, F. Graziani, E. Grosdidier, G. Gunnarsson, P. Gunther, M. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Haider, S. Hajduk, Z. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.O. Holt, P.J. Holthuizen, D. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Jonsson, P. Joram, C. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Korcyl, K. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kurvinen, K. Lacasta, C. Laktineh, I. Lamblot, S. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Lapin, V. Last, I. Laugier, J.P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez, J.M. Lopez-Fernandez, A. Lopez Aguera, M.A. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Maehlum, G. Maio, A. Malychev, V. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Mc Cubbin, M. Mc Kay, R. Mc Nulty, R. Medbo, J. Meroni, C. Meyer, W.T. Michelotto, M. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Mundim, L.M. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Palka, H. Papadopoulou, Th.D. Pape, L. Parodi, F. Passeri, A. Pegoraro, M. Pennanen, J. Peralta, L. Pernegger, H. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tavernet, J.P. Tchikilev, O. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.L. Tuuva, T. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voutilainen, M. Vrba, V. Wahlen, H. Walck, C. Waldner, F. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Wormser, G. Woschnagg, K. Yip, K. Yu, L. Yushchenko, O. Zach, F. Zacharatou, C. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zhigunov, V. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: A study of the production of strange octet and decuplet baryons in hadronic decays of the Z recorded by the DELPHI detector at LEP is presented. This includes the first measurement of the ∑± average multiplicity. The total and differential cross sections, the event topology and the baryon-antibaryon correlations are compared with current hadronization models. © 1995 Springer-Verlag.
Published: 1995

236. Lifetime of charged and neutral B hadrons using event topology

Author: Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Alvsvaag, S.J. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Anykeyev, V. Apel, W.D. Arnoud, Y. Åsman, B. Augustin, J.E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bloch, D. Blume, M. Blyth, S. Bocci, V. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bosworth, S. Botner, O. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenner, R.A. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Camacho Rozas, A.J. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daum, A. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.A. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Erzen, B. Espirito Santo, M. Falk, E. Fassouliotis, D. Feindt, M. Ferrer, A. Filippas, T.A. Firestone, A. Fischer, P.A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Frhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Galloni, A. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gibbs, M. Gillespie, D. Gokieli, R. Golob, B. Gopal, G. Gorn, L. Gorski, M. Gouz, Yu. Gracco, V. Graziani, E. Grosdidier, G. Gunnarsson, P. Gunther, M. Guy, J. Haedinger, U. Hahn, E. Hahn, M. Hahn, S. Hajduk, Z. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Jonsson, P. Joram, C. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Korcyl, K. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, K. Kurvinen, K. Lacasta, C. Laktineh, I. Lamblot, S. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Lapin, V. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez, J.M. Lopez-Fernandez, A. Lopez Aguera, M.A. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Maehlum, G. Maio, A. Malychev, V. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Cubbin, M.Mc. Kay, R.M. Nulty, R.M. Medbo, J. Meroni, C. Meyer, W.T. Michelotto, M. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Mundim, L.M. Murray, W.J. Muryn, G. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nieuwenhuizen, M. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Palka, H. Papadopoulou, Th.D. Pape, L. Parkes, C. Parodi, F. Passeri, A. egoraro, M. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tavernet, J.P. Tchikilev, O. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vrba, V. Wahlen, H. Walck, C. Waldner, F. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zacharatou, C. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zhigunov, V. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Abstract: The lifetimes of charged and neutral B hadrons have been measured using data collected by the DELPHI experiment at LEP between 1991 and 1993. B hadrons are tagged as jets with a secondary vertex and the charge of the B candidate is taken to be the sum of the charges of the particles in the secondary vertex. Approximately 1,434,000 multihadronic Z0 decays yielded 1817 B hadron candidates. The B purity was estimated to be around 99.1±0.3%, and 83% (70%) of the events measured as neutral (charged) came from neutral (charged) B's. The mean lifetimes of charged and neutral B hadrons were found to be 1.72±0.08 (stat.) ±0.06 (syst.) ps and 1.58±0.11 (stat.)±0.09 (syst.) ps respectively. The ratio of their lifertimes, τcharged/τneutral, was 1.09-0.10+0.11 (stat.)±0.08 (syst.). By making assumptions about the Bs0 and Λb0 states, the B+ and B0 meson lifetimes were determined to be τB+ = 1.72 ± 0.08 (stat.) ±0.06 (syst.) ps and τB+ = 1.63 ± 0.14 (stat.)±0.13 (syst.) ps and the ratio of their lifetimes was: τB+/τB0 = 1.06-0.11+0.13 ±0.10. The mean B lifetime was also deduced to be < τ > = 1.64 ±0.06 (stat.)±0.04 (syst.) ps. © 1995 Springer-Verlag.
Published: 1995

237. MEASUREMENT OF DELTA(++)(1232) PRODUCTION IN HADRONIC-Z-DECAYS

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML and ANTILOGUS, P ANYKEYEV, V APEL, WD ARNOUD, Y ASMAN, B and AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARDIN, DY BARKER, GJ BARONCELLI, A and BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P and BLOCH, D BLUME, M BLYTH, S BOCCI, V BOLOGNESE, T and BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C and BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C and BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENKE, T and BRENNER, RA BRICMAN, C BRILLAULT, L BROWN, RCA and BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BURGSMUELLER, T and BUSCHMANN, P BUYS, A CACCIA, M CALVI, M ROZAS, AJC and CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F and CARENA, F CARRILHO, P CARROLL, L CASO, C GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHIERICI, R CHLIAPNIKOV, P CHOCHULA, P and CHOROWICZ, V CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F CRAWLEY, HB and CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S and DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G and DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W DEFOIX, C and DELLARICCA, G DELPIERRE, P DEMARIA, N DEANGELIS, A and DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERCQ, C and DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L and DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F and DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J and DREES, KA DRIS, M DUFOUR, Y DUPONT, F EDSALL, D and EHRET, R EIGEN, G EKELOF, T EKSPONG, G ELSING, M and ENGEL, JP ERSHAIDAT, N ERZEN, B SANTO, ME FALK, E and FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA and FIRESTONE, A FISCHER, PA FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FRANEK, B FRENKIEL, P FRIES, DC and FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FUSTER, J and GALLONI, A GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J and GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D and GERBER, JP GIBBS, M GOKIELI, R GOLO, B GOPAL, G and GORN, L GORSKI, M GOUZ, Y GRACCO, V GRAZIANI, E and GROSDIDIER, G GUNNARSSON, P GUNTHER, M GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HAJDUK, Z HALLGREN, A and HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R and HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ and HOLTHUIZEN, D HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K and IOANNOU, P JACKSON, JN JACOBSSON, R JALOCHA, P and JANIK, R JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK and JONSSON, L JONSSON, P JORAM, C JUILLOT, P KAISER, M and KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN and KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P and KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KRAMMER, M KREUTER, C KROLIKOWSKI, J KRONKVIST, I and KRUMSTEIN, Z KRUPINSKI, W KUBINEC, P KUCEWICZ, W and KURVINEN, K LACASTA, C LAKTINEH, I LAMBLOT, S LAMSA, JW and LANCERI, L LANE, DW LANGEFELD, P LAPIN, V LAST, I and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F and LEFEBURE, V LEGAN, CK LEITNER, R LEMOIGNE, Y LEMONNE, J and LENZEN, G LEPELTIER, V LESIAK, T LIKO, D LINDNER, R and LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M and LOKEN, JG LOPEZ, JM LOPEZFERNANDEZ, A AGUERA, MAL and LOUKAS, D LUTZ, P LYONS, L MAEHLUM, G MAIO, A and MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M and MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C MARTINEZVIDAL, F GARCIA, SMI MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R and MCNULTY, R MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M and MIGLIORE, E MIRABITO, L MITAROFF, WA MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MUNDIM, LM MURRAY, WJ MURYN, B MYATT, G and NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S and NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS and NIEUWENHUIZEN, M NIKOLAENKO, V NISS, P NOMEROTSKI, A and NORMAND, A OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG and ONOFRE, A ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAGES, P PALKA, H PAPADOPOULOU, TD and PAPE, L PARKES, C PARODI, F PASSERI, A PEGORARO, M and PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C and PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F PIMENTA, M and PINDO, M PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P and PUKHAEVA, N PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H and RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P and REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G and RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P ROOS, L and ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K RYBIN, A and SAARIKKO, H SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J and SANCHEZ, J SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEAGER, P SEDYKH, Y SEGAR, AM SEITZ, A and SEKULIN, R SHELLARD, RC SICCAMA, I SIEGRIST, P and SIMONETTI, S SIMONETTO, F SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOVA, O SMITH, GR SOSNOWSKI, R and SOUZASANTOS, D SPASSOV, T SPIRITI, E SPONHOLZ, P and SQUARCIA, S STANESCU, C STAPNES, S STAVITSKI, I and STEPANIAK, K STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T and TAVERNET, JP TCHIKILEV, O TILQUIN, A TIMMERMANS, J and TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B and TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W and TRISTRAM, G TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML and TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VANELDIK, J VASSILOPOULOS, N VEGNI, G VENTURA, L VENUS, W VERBEURE, E VERLATO, M VERTOGRADOV, LS VILANOVA, D and VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VRBA, V and WAHLEN, H WALCK, C WALDNER, F WEIERSTALL, M and WEILHAMMER, P WETHERELL, AM WICKE, D WICKENS, JH and WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WOSCHNAGG, K YIP, K YUSHCHENKO, O ZACH, F and ZACHARATOU, C ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZAVRTANIK, D ZEVGOLATAKOS, E ZHIGUNOV, V ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A measurement of the Delta(++)(1232) inclusive production in hadronic decays of the Z at LEP is presented, based on 1.3 million hadronic events collected by the DELPHI detector in the 1994 LEP running period. The DELPHI ring imaging Cherenkov counters are used for identifying hadrons. The average Delta(++)(1232) multiplicity per hadronic event is 0.079 +/- 0.015 which is more than a factor of two below the JETSET, HERWIG and UCLA model predictions. It agrees with a recently proposed universal mass dependence of particle production rates in e(+)e(-) annihilations.
Published: 1995

238. Inclusive measurements of the K$^{\pm}$ and p/$\overline{p}$ production in hadronic Z$^0$ decays

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, Roy, Alekseev, G D, Allport, P P, Almehed, S, Alvsvaag, S J, Amaldi, Ugo, Amato, S, Andreazza, A, Andrieux, M L, Antilogus, P, Apel, W D, Arnoud, Y, Augustin, J E, Augustinus, A, Baillon, Paul, Bambade, P, Barate, R, Bardin, Dimitri Yuri, Barker, G J, Baroncelli, A, Barrio, J A, Bartl, Walter, Barão, F, Bates, M J, Battaglia, Marco, Baubillier, M, Baudot, J, Becks, K H, Begalli, M, Beillière, P, Belokopytov, Yu A, Belous, K S, Benvenuti, Alberto C, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, S M, Billoir, P, Bjarne, J, Bloch, D, Blume, M, Blyth, S, Bocci, V, Bolognese, T, Bonesini, M, Bonivento, W, Booth, P S L, Borisov, G, Bosio, C, Bosjancic, B, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, T J V, Bozzo, M, Branchini, P, Brand, K D, Brenner, R A, Bricman, C, Brillault, L, Brown, R C A, Brunet, J M, Brückman, P, Bugge, L, Buran, T, Buys, A, Bärring, O, Caccia, M, Calvi, M, Camacho-Rozas, A J, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carrilho, P, Carroll, L, Caso, Carlo, Cassio, V, Castillo-Gimenez, M V, Cattai, A, Cavallo, F R, Cerrito, L, Chabaud, V, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, G A, Chikilev, O G, Chliapnikov, P V, Chochula, P, Chorowicz, V, Cindro, V, Collins, P, Contreras, J L, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, H B, Crennell, D J, Crosetti, G, Cuevas-Maestro, J, Czellar, S, D'Almagne, B, Da Silva, W, Dahl-Jensen, Erik, Dahm, J, Dam, M, Damgaard, G, Daum, A, Dauncey, P D, Davenport, Martyn, De Angelis, A, De Boeck, H, De Brabandere, S, De Clercq, C, De Lotto, B, De Min, A, De Paula, L S, De Saint-Jean, C, Defoix, C, Della Ricca, G, Delpierre, P A, Demaria, N, Di Ciaccio, Lucia, Dijkstra, H, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Drees, K A, Dris, M, Dufour, Y, Dupont, F, Dönszelmann, M, Edsall, D M, Ehret, R, Eigen, G, Ekelöf, T J C, Ekspong, Gösta, Elsing, M, Engel, J P, Ershaidat, N, Espirito-Santo, M C, Falaleev, V P, Falk, E, Fassouliotis, D, Feindt, Michael, Ferrer, A, Filippas-Tassos, A, Firestone, A, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B J, Frenkiel, P, Fries, D E C, Frodesen, A G, Frühwirth, R, Fulda-Quenzer, F, Fuster, J A, Föth, H, Fürstenau, H, Gamba, D, Gandelman, M, García, C, García, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, E N, Gelé, D, Gerber, J P, Gillespie, D, Gokieli, R, Golob, B, Gopal, Gian P, Gorn, L, Gracco, Valerio, Grard, F, Graziani, E, Grosdidier, G, Gunnarsson, P, Guy, J, Górski, M, Günther, M, Haedinger, U, Hahn, F, Hahn, M, Hahn, S, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, Hao, W, Harris, F J, Hedberg, V, Henriques, R P, Hernández, J J, Herquet, P, Herr, H, Hessing, T L, Higón, E, Hilke, Hans Jürgen, Hill, T S, Holmgren, S O, Holt, P J, Holthuizen, D J, Houlden, M A, Hrubec, Josef, Huet, K, Hultqvist, K, Ioannou, P, Jackson, J N, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E K, Joram, Christian, Juillot, P, Jönsson, L B, Kaiser, M, Kalmus, George Ernest, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, E C, Keränen, R, Khomenko, B A, Khovanskii, N N, King, B J, Kjaer, N J, Klein, H, Klovning, A, Kluit, P M, Kokkinias, P, Koratzinos, M, Kostyukhin, V, Kourkoumelis, C, Kramer, P H, Kreuter, C, Kronkvist, I J, Krumshtein, Z, Krupinski, W, Królikowski, J, Kubinec, P, Kucewicz, W, Kurvinen, K L, Kuznetsov, O, Köhne, J H, Köne, B, La Vaissière, C de, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, J, Lanceri, L, Lane, D W, Langefeld, P, Lapin, V, Last, I, Laugier, J P, Lauhakangas, R, Leder, Gerhard, Ledroit, F, Lefébure, V, Legan, C K, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, Georg, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Lokajícek, M, Loken, J G, Loukas, D, Lutz, P, Lyons, L, López, J M, López-Aguera, M A, López-Fernandez, A, Lörstad, B, MacNaughton, J N, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Margoni, M, Marin, J C, Mariotti, C, Markou, A, Maron, T, Martí i García, S, Martínez-Rivero, C, Martínez-Vidal, F, Maréchal, B, Matorras, F, Matteuzzi, C, Matthiae, Giorgio, Mazzucato, M, McCubbin, M L, McKay, R, McNulty, R, Medbo, J, Meroni, C, Meyer, W T, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Winfried A, Mjörnmark, U, Moa, T, Monge, M R, Morettini, P, Mundim, L M, Murray, W J, Muryn, B, Myatt, Gerald, Mönig, K, Møller, R, Müller, H, Naraghi, F, Navarria, Francesco Luigi, Navas, S, Negri, P, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, B S, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, Ainsley, Némécek, S, Oberschulte-Beckmann, W, Obraztsov, V F, Olshevskii, A G, Onofre, A, Orava, Risto, Ouraou, A, Paganini, P, Paganoni, M, Pagès, P, Palka, H, Papadopoulou, T D, Pape, L, Parodi, F, Passeri, A, Pegoraro, M, Pennanen, J, Pernegger, H, Pernicka, Manfred, Perrotta, A, Petridou, C, Petrolini, A, Phillips, H T, Piana, G, Pierre, F, Pimenta, M, Plaszczynski, S, Podobrin, O, Pol, M E, Polok, G, Poropat, P, Pozdnyakov, V, Prest, M, Privitera, P, Pullia, Antonio, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, P N, Read, A L, Reale, M, Rebecchi, P, Redaelli, N G, Regler, Meinhard, Reid, D, Renton, P B, Resvanis, L K, Ribicki, K, Richard, F, Richardson, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, E I, Rosso, E, Roudeau, Patrick, Rovelli, T, Ruhlmann-Kleider, V, Ruiz, A, Rídky, J, Rückstuhl, W, Saarikko, H, Sacquin, Yu, Sadovskii, A, Sajot, G, Salt, J, Sannino, M, Schneider, H, Schyns, M A E, Sciolla, G, Scuri, F, Sedykh, Yu, Segar, A M, Seitz, A, Sekulin, R L, Shellard, R C, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sissakian, A N, Sitár, B, Skaali, T B, Smadja, G, Smirnov, N, Smirnova, O G, Smith, G R, Sosnowski, R, Souza-Santos, D, Spassoff, Tz, Spiriti, E, Squarcia, S, Stanescu, C, Stapnes, Steinar, Stavitski, I, Stepaniak, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Stäck, H, Szczekowski, M, Szeptycka, M, Sánchez, J, Tabarelli de Fatis, T, Tavernet, J P, Tilquin, A, Timmermans, J, Tkatchev, L G, Todorov, T, Toet, D Z, Tomaradze, A G, Tomé, B, Torassa, E, Tortora, L, Tranströmer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A L, Turluer, M L, Tyapkin, I A, Tyndel, M, Tzamarias, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Van Doninck, W K, Van Eldik, J, Van der Velde, C, Vegni, G, Ventura, L, Venus, W A, Verbeure, F, Verlato, M, Vertogradov, L S, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, A S, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wehr, A, Weierstall, M, Weilhammer, Peter, Wetherell, Alan M, Wicke, D, Wickens, J H, Wielers, M, Wilkinson, G R, Williams, W S C, Winter, M, Witek, M, Wormser, G, Woschnagg, K, Yip, K, Yu, L, Yushchenko, O P, Zach, F, Zaitsev, A, Zalewska-Bak, A, Zalewski, Piotr, Zavrtanik, D, Zevgolatakos, E, Zimin, N I, Zito, M, Zontar, D, Zuberi, R, Zucchelli, G C, Zumerle, G, de Boer, Wim, van Apeldoorn, G W, van Dam, P, Åsman, B, Österberg, K, Überschär, B, Überschär, S, 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 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), 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, 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), 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 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 Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Particle Physics - Experiment
Published: 1995

239. A study of radiative muon-pair events at Z(0) energies and limits on an additional Z' gauge boson

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, L, Aleksan, R, Alekseev, Gd, Allport, Pp, Almehed, S, Almeida, Fml, Alvsvaag, Sj, Amaldi, U, Andreazza, A, Antilogus, P, Apel, Wd, Apsimon, Rj, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Bardin, Dy, Barker, Gj, Baroncelli, A, Barring, O, Barrio, Ja, Bartl, W, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Beltran, P, Benvenuti, Ac, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bjarne, J, Bloch, D, Blocki, J, Blyth, S, Bocci, V, Bogolubov, Pn, Bolognese, T, Bonesini, M, Bonivento, W, Booth, Psl, Borisov, G, Bosio, C, Bostjancic, B, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozzo, M, Braibant, S, Branchini, P, Brand, Kd, Brenner, Ra, Briand, H, Bricman, C, Brillault, L, Brown, Rca, Brunet, Jm, Bugge, L, Buran, T, Buys, A, Buytaert, Jama, Caccia, Massimo, Calvi, M, Rozas, Ajc, Campion, R, Camporesi, T, Canale, V, Cankocak, K, Cao, F, Carena, F, Carrilho, P, Carroll, L, Cases, R, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Cerrito, L, Chabaud, V, Chan, A, Chapkin, M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, Ga, Chliapnikov, P, Chorowicz, V, Chrin, Jtm, Cindro, V, Collins, P, Contreras, Jl, Contri, R, Cortina, E, Cosme, G, Cosmo, G, Cossutti, C, Couchot, F, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahljensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Daubie, E, Daum, A, Dauncey, Pd, Davenport, M, Davies, J, Dasilva, W, Defoix, C, Delpierre, P, Demaria, N, Deangelis, A, Deboeck, H, Deboer, W, Debrabandere, S, Declercq, C, Laso, Mdmf, Delavaissiere, C, Delotto, B, Demin, A, Depaula, L, Desaintjean, C, Dijkstra, H, Diciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Dress, J, Dris, M, Dufour, Y, Dupont, F, Edsall, D, Ehret, R, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Ershaidat, N, Santo, Me, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Filippas, Ta, Firestone, A, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Fousset, Jl, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Furstenau, H, Fuster, J, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Giacomelli, P, Gillespie, D, Gokieli, R, Golob, B, Golovatyuk, Vm, Gomez, Jj, Cadenas, Y, Gopal, G, Gorn, L, Gorski, M, Gracco, V, Grard, F, Graziani, E, Grosdidier, G, Gunnarsson, P, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Hahn, S, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, Hao, W, Harris, Fj, Hedberg, V, Henriques, R, Hermandez, Jj, Hernando, Ja, Herquet, P, Herr, H, Hessing, Tl, Higon, E, Hilke, Hj, Hill, Ts, Holmgren, So, Holt, Pj, Holthuizen, D, Honore, Pf, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Ioanou, P, Iversen, Ps, Jackson, Jn, Jacobsson, R, Jalocha, P, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonker, M, Jonsson, L, Juillot, P, Kaiser, M, Kalmus, G, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klein, H, Klovning, A, Kluit, P, Kochmehrin, A, Koehne, Jh, Koene, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Korytov, Av, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, Ph, Krammer, M, Kreuter, C, Krolikowski, J, Kronkvist, I, Krupinski, W, Kulka, K, Kurvinen, K, Lacasta, C, Laktineh, I, Lambropoulos, C, Lamsa, Jw, Lanceri, L, Langefeld, P, Lapin, V, Last, I, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Levy, Jm, Lieb, E, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, Jg, Lopezfernandez, A, Lopezaguera, Ma, Los, M, Loukas, D, Lozano, Jj, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maio, A, Maltezos, A, Mandl, F, Marco, J, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Maron, T, Marti, S, Martinezrivero, C, Martinezvidal, F, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Cubbin, Mm, Kay, Rm, Nulty, Rm, Medbo, J, Meroni, C, Meyer, Wt, Michelotto, M, Migliore, E, Mikulec, I, Mirabito, L, Mitaroff, Wa, Mitselmakher, Gv, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Murray, Wj, Muryn, B, Myatt, G, Naraghi, F, Navarria, Fl, Negri, P, Nemecek, S, Neumann, W, Nicolaidou, R, Nielsen, Bs, Niss, P, Nomerotski, A, Normand, A, Obraztsov, V, Olshevski, Af, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pain, R, Palka, H, Papadopoulou, Td, Pape, L, Parodi, F, Passeri, A, Pegoraro, M, Pennanen, J, Peralta, L, Pernegger, H, Pernicka, M, Perrota, A, Petridou, C, Petrolini, A, Phillips, Ht, Piana, G, Pierre, F, Pimenta, M, Plaszczynski, S, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Prest, Michela, Privitera, P, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, Ei, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schael, S, Schneider, H, Schyns, Mae, Sciolla, G, Scuri, F, Segar, Am, Seitz, A, Sekulin, R, Seufert, R, Shellard, Rc, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, An, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stapnes, S, Stavitski, I, Stavropoulos, G, Stepaniak, K, Stichelbaut, F, Stocchi, A, Strauss, J, Straver, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tchikilev, O, Theodosiou, Ge, Thome, Z, Tilquin, A, Timmermans, J, Timofeev, Vg, Tkatchev, Lg, Todorov, T, Toet, Dz, Tomaradze, A, Tome, B, Torassa, E, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Troncon, C, Tsirou, A, Tsyganov, En, Turala, M, Turluer, Ml, Tuuva, T, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Ferrer, Jav, Velde, Cv, Vanapeldoorn, Gw, Vandam, P, Vanderheijden, M, Vandoninck, Wk, Vaneldik, J, Vaz, P, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vollmer, M, Voutilainen, M, Wahlen, H, Walck, C, Wehr, A, Weierstall, M, Weilhammer, P, Wetherell, Am, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Wormser, G, Woschnagg, K, Yip, K, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zito, M, Zontar, D, Zuberi, R, and Zumerle, G.
Subjects: radiative photon, muon pair cross section, DELPHI
Published: 1995

240. A measurement of B+ and B0 lifetimes using Mathematical expression events

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Alvsvaag, S.J. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Barbiellini, G. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bloch, D. Blume, M. Blyth, S. Bocci, V. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bosworth, S. Botner, O. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenner, R.A. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Rozas, A.J.C. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Caso, C. Gimenez, M.V.C. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Chapkin, M. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Maestro, J.C. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daum, A. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Ricca, G.D. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Erzen, B. Falk, E. Fassouliotis, D. Feindt, M. Fenyuk, A. Ferrer, A. Filippas, T.A. Firestone, A. Fischer, P.-A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Galloni, A. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gibbs, M. Gillespie, D. Gokieli, R. Golob, B. Gopal, G. Gorn, L. Gorski, M. Gouz, Yu. Gracco, V. Graziani, E. Grosdidier, G. Gunnarsson, P. Gunther, M. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Hajduk, Z. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Joannou, P. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Jonsson, P. Joram, C. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.-H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kurvinen, K. Lacasta, C. Laktineh, I. Lamblot, S. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez, J.M. Lopez-Fernandez, A. Aguera, M.A.L. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Maehlum, G. Maio, A. Malychev, V. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Mc Cubbin, R. Mc Kay, R. Mc Nulty, R. Medbo, J. Meroni, C. Meyer, W.T. Michelotto, M. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Mundim, L.M. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Negri, P. Nemecek, S. Neumann, W. Nicolaidou, R. Nielsen, B.S. Nieuwenhuizen, M. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Palka, H. Papadopoulou, Th.D. Pape, L. Parkes, C. Parodi, F. Passeri, A. Pegoraro, M. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Ronjin, V. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Solovyanov, O. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tavernet, J.P. Tchikilev, O. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vrba, V. Wahlen, H. Walck, C. Waldner, F. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zacharatou, C. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Subjects: Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A measurement of B meson lifetimes is presented using data collected from 1991 to 1993 by the DELPHI detector at the LEP collider. Samples of events with a D meson and a lepton in the same jet are selected where {Mathematical expression} and D*ℓ+ events originate mainly from the semileptonic decays of B+ and B0 mesons, respectively. From the reconstructed B decay length and the estimated B momentum, taking into account the dilution due to B decays into {Mathematical expression}, the following B meson lifetimes and lifetime ratio are measured: {Mathematical expression} and an average lifetime of B+ and B0 mesons is obtained: {Mathematical expression} © 1995 Springer-Verlag.
Published: 1995

241. A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML and ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE and AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O and BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M and BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P and BELOKOPYTOV, Y BENVENUTI, AC BERGGREN, M BERTRAND, D and BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P BLOCH, D and BLUME, M BLYTH, S BOCCI, V BOLOGNESE, T BONESINI, M and BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSWORTH, S and BOTNER, O BOUDINOV, E BOUQUET, B BOURDARIOS, C and BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENKE, T and BRENNER, RA BRICMAN, C BRILLAULT, L BROWN, RCA and BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BURGSMUELLER, T and BUSCHMANN, P BUYS, A CACCIA, M CALVI, M ROZAS, AJC and CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F and CARENA, F CARRILHO, P CARROLL, L CASO, C GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V and CHAPKIN, M CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J and CHECCHIA, P CHELKOV, GA CHIERICI, R CHLIAPNIKOV, P and CHOCHULA, P CHOROWICZ, V CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F and CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W and DEFOIX, C DELLARICCA, G DELPIERRE, P DEMARIA, N and DEANGELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S and DECLERCQ, C DELAVAISSIERE, C DELOTTO, B DEMIN, A and DEPAULA, L DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L and DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M and DREES, J DREES, KA DRIS, M DUFOUR, Y DUPONT, F and EDSALL, D EHRET, R EIGEN, G EKELOF, T EKSPONG, G and ELSING, M ENGEL, JP ERSHAIDAT, N ERZEN, B SANTO, ME and FALK, E FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA and FIRESTONE, A FISCHER, PA FOETH, H FOKITIS, E and FONTANELLI, F FORMENTI, F FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FUSTER, J and GALLONI, A GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J and GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D and GERBER, JP GIBBS, M GOKIELI, R GOLOB, B GOPAL, G and GORN, L GORSKI, M GOUZ, Y GRACCO, V GRAZIANI, E and GROSDIDIER, G GUNNARSSON, P GUNTHER, M GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HALLGREN, A HAMACHER, K and HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ and HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D and HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P and JACKSON, JN JACOBSSON, R JALOCHA, P JANIK, R JARLSKOG, G and JARRY, P JEANMARIE, B JOHANSSON, EK JONSSON, L and JONSSON, P JORAM, C JUILLOT, P KAISER, M KAPUSTA, F and KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ and KLEIN, H KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B and KOKKINIAS, P KORATZINOS, M KORCYL, K KOSTIOUKHINE, V and KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KREUTER, C and KROLIKOWSKI, J KRONKVIST, I KRUMSTEIN, Z KRUPINSKI, W and KUBINEC, P KUCEWICZ, W KURVINEN, K LACASTA, C LAKTINEH, I LAMBLOT, S LAMSA, JW LANCERI, L LANE, DW and LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R and LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LESIAK, T LIKO, D LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZ, JM and LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LUTZ, P LYONS, L and MACNAUGHTON, J MAEHLUM, G MAIO, A MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC and MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C and MARTINEZVIDAL, F GARCIA, SMI MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R and MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIRABITO, L MITAROFF, WA MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MUNDIM, LM MURRAY, WJ MURYN, B MYATT, G NARAGHI, F and NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W and NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIEUWENHUIZEN, M and NIKOLAENKO, V NISS, P NOMEROTSKI, A NORMAND, A and OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG ONOFRE, A and ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P and PAGANONI, M PAGES, P PALKA, H PAPADOPOULOU, TD PAPE, L and PARKES, C PARODI, F PASSERI, A PEGORARO, M PERALTA, L PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C and PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F PIMENTA, M and PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G and POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P PUKHAEVA, N PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H and RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P and REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK and RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I and ROMERO, A RONCAGLIOLO, I RONCHESE, P ROOS, L and ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A SAARIKKO, H SACQUIN, Y and SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J SANNINO, M and SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEDYKH, Y and SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN and SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N SMIRNOVA, O and SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T and SPIRITI, E SPONHOLZ, P SQUARCIA, S STANESCU, C STAPNES, S STAVITSKI, I STEPANIAK, K STICHELBAUT, F STOCCHI, A and STRAUSS, J STRUB, R STUGU, B SZCZEKOWSKI, M and SZEPTYCKA, M TABARELLI, T TAVERNET, JP TCHIKILEV, O and TILQUIN, A TIMMERMANS, J TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORTORA, L TRANSTROMER, G and TREILLE, D TRISCHUK, W TRISTRAM, G TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML TYAPKIN, IA TYNDEL, M and TZAMARIAS, S UEBERSCHAER, B ULLALAND, O UVAROV, V and VALENTI, G VALLAZZA, E VANDERVELDE, C VANAPELDOORN, GW and VANDAM, P VANDONINCK, WK VANELDIK, J VASSILOPOULOS, N and VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M and VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VRBA, V WAHLEN, H WALCK, C WALDNER, F WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKE, D and WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC and WINTER, M WITEK, M WOSCHNAGG, K YIP, K YUSHCHENKO, O and ZACH, F ZACHARATOU, C ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZAVRTANIK, D ZEVGOLATAKOS, E ZIMIN, NI ZITO, M and ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A sample of 25000 Z(0) –> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic branching fractions of the tau lepton. The results are B(tau –> e nu) = (17.51+/-0.39)% and B(tau –> mu nu) = (17.02+/-0.31)%. The ratio of the muon and electron couplings to the weak charged current is measured to be g(mu)/g(e) = 1.000+/-0.013, satisfying e-mu universality. The average leptonic branching fraction corrected to the value for a massless lepton, assuming e-mu universality, is found to be B(tau –> l nu) = (17.50+/-0.25)%.
Published: 1995

242. Inclusive Measurements of the K+/- and P/(p)over-bar Production In Hadronic Z(0) Decays

Author: ABREU, P, ADAM, W, ADYE, T, AGASI, E, AJINENKO, I, ALEKSAN, R, ALEKSEEV, G, ALLPORT, P, ALMEHED, S, ALVSVAAG, S, AMALDI, U, AMATO, S, ANDREAZZA, A, ANDRIEUX, M, ANTILOGUS, P, APEL, W, ARNOUD, Y, ASMAN, B, AUGUSTIN, J, AUGUSTINUS, A, BAILLON, P, BAMBADE, P, BARAO, F, BARATE, R, BARDIN, D, BARKER, G, BARONCELLI, A, BARRING, O, BARRIO, J, BARTL, W, BATES, M, BATTAGLIA, M, BAUBILLIER, M, BAUDOT, J, BECKS, K, BEGALLI, M, BEILLIERE, P, BELOKOPYTOV, Y, BELOUS, K, BENVENUTI, A, BERGGREN, M, BERTRAND, D, BIANCHI, F, BIGI, M, BILENKY, M, BILLOIR, P, BJARNE, J, BLOCH, D, BLUME, M, BLYTH, S, BOCCI, V, BOLOGNESE, T, BONESINI, M, BONIVENTO, W, BOOTH, P, BORISOV, G, BOSIO, C, BOSTJANCIC, B, BOSWORTH, S, BOTNER, O, BOUDINOV, E, BOUQUET, B, BOURDARIOS, C, BOWCOCK, T, BOZZO, M, BRANCHINI, P, BRAND, K, BRENNER, R, BRICMAN, C, BRILLAULT, L, BROWN, R, BRUCKMAN, P, BRUNET, J, BUGGE, L, BURAN, T, BUYS, A, CACCIA, M, CALVI, M, ROZAS, A, CAMPORESI, T, CANALE, V, CANEPA, M, CANKOCAK, K, CAO, F, CARENA, F, CARRILHO, P, CARROLL, L, CASO, C, CASSIO, V, GIMENEZ, M, CATTAI, A, CAVALLO, F, CHAUVEAU, J, CHECCHIA, P, CHELKOV, G, CHLIAPNIKOV, P, CHOCHULA, P, CHOROWICZ, V, CINDRO, V, COLLINS, P, CONTRERAS, J, CONTRI, R, CORTINA, E, COSME, G, COSSUTTI, F, CRAWLEY, H, CRENNELL, D, CROSETTI, G, MAESTRO, J, CZELLAR, S, DAHLJENSEN, E, DAHM, J, DALMAGNE, B, DAM, M, DAMGAARD, G, DAUM, A, DAUNCEY, P, DAVENPORT, M, DASILVA, W, DEFOIX, C, DELLARICCA, G, DELPIERRE, P, DEMARIA, N, DEANDELIS, A, DEBOECK, H, DEBOER, W, DEBRABANDERE, S, DECLERQ, C, DELAVAISSIERE, C, DELOTTO, B, DEMIN, A, DEPAULA, L, DESAINTJEAN, C, DIJKSTRA, H, DICIACCIO, L, DJAMA, F, DOLBEAU, J, DONSZELMANN, M, DOROBA, K, DUPONT, F, EDSALL, D, EHRET, R, EIGEN, G, EKELOF, T, EKSPONG, G, ELSING, M, ENGEL, J, ERSHAIDAT, N, SANTO, M, FALALEEV, V, FASSOULIOTIS, D, FEINDT, M, FERRER, A, FILIPPAS, T, FIRESTONE, A, FOETH, H, FOKITIS, E, FONTANELLI, F, FORMENTI, F, FRANEK, B, FRENKIEL, P, FRIES, D, FRODESEN, A, FRUHWIRTH, R, FULDAQUENZER, F, FURSTENAU, H, FUSTER, J, GAMBA, D, GANDELMAN, M, GARCIA, C, GARCIA, J, GASPAR, C, GASPARINI, U, GAVILLET, P, GAZIS, E, GELE, D, GERBER, J, GILLESPIE, D, GOKIELI, R, GOLOB, B, GOPAL, G, GORN, L, GORSKI, M, GRACCO, V, GRARD, F, GRAZIANI, E, GROSDIDIER, G, GUNNARSSON, P, GUNTHER, M, GUY, J, HAEDINGER, U, HAHN, F, HAHN, M, HAHN, S, HAIDER, S, HAJDUK, Z, HAKANSSON, A, HALLGREN, A, HAMACHER, K, HAO, W, HARRIS, F, HEDBERG, V, HENRIQUES, R, HERNANDEZ, J, HERQUET, P, HERR, H, HESSING, T, HIGON, E, HILKE, H, HILL, T, HOLMGREN, S, HOLT, P, HOLTHUIZEN, D, HOULDEN, M, HRUBEC, J, HUET, K, HULTQVIST, K, IOANNOU, P, JACKSON, J, JACOBSSON, R, JALOCHA, P, JANIK, R, JARLSKOG, G, JARRY, P, JEANMARIE, B, JOHANSSON, E, JONSSON, L, JORAM, C, JUILLOT, P, KAISER, M, KALMUS, G, KAPUSTA, F, KARLSSON, M, KARVELAS, E, KATSANEVAS, S, KATSOUFIS, E, KERANEN, R, KHOMENKO, B, KHOVANSKI, N, KING, B, KJAER, N, KLEIN, H, KLOVNING, A, KLUIT, P, KOEHNE, J, KOENE, B, KOKKINIAS, P, KORATZINOS, M, KOSTIOUKHINE, V, KOURKOUMELIS, C, KOUZNETSOV, O, KRAMER, P, KREUTER, C, KROLIKOWSKI, J, KRONKVIST, I, KRUMSTEIN, Z, KRUPINSKI, W, KUBINEC, P, KUCEWICZ, W, KURVINEN, K, LACASTA, C, LAKTINEH, I, LAMBLOT, S, LAMSA, J, LANCERI, L, LANE, D, LANGEFELD, P, LAPIN, V, LAST, I, LAUGIER, J, LAUHAKANGAS, R, LEDER, G, LEDROIT, F, LEFEBURE, V, LEGAN, C, LEITNER, R, LEMOIGNE, Y, LEMONNE, J, LENZEN, G, LEPELTIER, V, LESIAK, T, LIKO, D, LIDNER, R, LIPNIACKA, A, LIPPI, I, LOERSTAD, B, LOKAJICEK, M, LOKEN, J, LOPEZ, J, LOPEZFERNANDEZ, A, AGUERA, M, LOUKAS, D, LUTZ, P, LYONS, L, MACNAUGHTON, J, MAEHLUM, G, MAIO, A, MALYCHEV, V, MANDL, F, MARCO, J, MARECHAL, B, MARGONI, M, MARIN, J, MARIOTTI, C, MARKOU, A, MARON, T, MARTINEZRIVERO, C, MARTINEZVIDAL, F, GARCIA, S, MATORRAS, F, MATTEUZZI, C, MATTHIAE, G, MAZZUCATO, M, MCCUBBIN, M, MCKAY, R, MCNULTY, R, MEDBO, J, MERONI, C, MEYER, W, MICHELOTTO, M, MIGLIORE, E, MIRABITO, L, MITAROFF, W, MJOERNMARK, U, MOA, T, MOELLER, R, MOENIG, K, MONGE, M, MORETTINI, P, MUELLER, H, MUNDIM, L, MURRAY, W, MURYN, B, MYATT, G, NARAGHI, F, NAVARRIA, F, NAVAS, S, NEGRI, P, NEMECEK, S, NEUMANN, W, NEUMEISTER, N, NICOLAIDOU, R, NIELSEN, B, NIKOLAENKO, V, NISS, P, NOMEROTSKI, A, NORMAND, A, OBERSCHULTEBECKMANN, W, OBRAZTSOV, V, OLSHEVSKI, A, ONOFRE, A, ORAVA, R, OSTERBERG, K, OURAOU, A, PAGANINI, P, PAGANONI, M, PAGES, P, PALKA, H, PAPADOPOULOU, T, PAPE, L, PARODI, F, PASSERI, A, PEGORARO, M, PENNANEN, J, PERNEGGER, H, PERNICKA, M, PERROTTA, A, PETRIDOU, C, PETROLINI, A, PHILLIPS, H, PIANA, G, PIERRE, E, PIMENTA, M, PLASZCZYNSKI, S, PODOBRIN, O, POL, M, POLOK, G, POROPAT, P, POZDNIAKOV, V, PREST, M, PRIVITERA, P, PULLIA, A, RADOJICIC, D, RAGAZZI, S, RAHMANI, H, RAMES, J, RATOFF, P, READ, A, REALE, M, REBECCHI, P, REDAELLI, N, REGLER, M, REID, D, RENTON, P, RESVANIS, L, RICHARD, F, RICHARDSON, J, RIDKY, J, RINAUDO, G, RIPP, I, ROMERO, A, RONCAGLIOLO, I, RONCHESE, P, ROOS, L, ROSENBERG, E, ROSSO, E, ROUDEAU, P, ROVELLI, T, RUCKSTUHL, W, RUHLMANNKLEIDER, V, RUIZ, A, RYBICKI, K, SAARIKKO, H, SACQUIN, Y, SADOVSKY, A, SAJOT, G, SALT, J, SANCHEZ, J, SANNINO, M, SCHNEIDER, H, SCHYNS, M, SCIOLLA, G, SCURI, F, SEDYKH, Y, SEGAR, A, SEITZ, A, SEKULIN, R, SHELLARD, R, SICCAMA, I, SIEGRIST, P, SIMONETTI, S, SIMONETTO, F, SISAKIAN, A, SITAR, B, SKAALI, T, SMADJA, G, SMIRNOV, N, SMIRNOVA, O, SMITH, G, SOSNOWSKI, R, SOUZASANTOS, D, SPASSOV, T, SPIRITI, E, SQUARCIA, S, STAECK, H, STANESCU, C, STAPNES, S, STAVITSKI, I, STEPANIAK, K, STICHELBAUT, F, SZEPTYCKA, M, TABARELLI, T, TAVERNET, J, TCHIKILEV, O, TILQUIN, A, TIMMERMANS, J, TKATCHEV, L, TODOROV, T, TOET, D, TOMARADZE, A, TOME, B, TORASSA, E, TORTORA, L, TRANSTROMER, G, TREILLE, D, TRISCHUK, W, TRISTRAM, G, TROMBINI, A, TRONCON, C, TSIROU, A, TURLUER, M, TYAPKIN, L, TYNDEL, M, TZAMARIAS, S, UEBERSCHAER, B, UEBERSCHAER, S, ULLALAND, O, UVAROV, V, VALENTI, G, VALLAZZA, E, VANDERVELDE, C, VANAPELDOORN, G, VANDAM, P, VANDONINCK, W, VANELDIK, J, VEGNI, G, VENTURA, L, VENUS, W, VERBEURE, F, VERLATO, M, VERTOGRADOV, L, VILANOVA, D, VINCENT, P, VITALE, L, VLASOV, E, VODOPYANOV, A, VOUTILAINEN, M, VRBA, V, WAHLEN, H, WALCK, C, WALDNER, F, WEHR, A, WEIERSTALL, M, WEILHAMMER, P, WETHERELL, A, WICKE, D, WICKENS, J, WIELERS, M, WILKINSON, G, WILLIAMS, W, WINTER, M, WITEK, M, WORMSER, G, WOSCHNAGG, K, YIP, K, YU, L, YUSHCHENKO, O, ZACH, F, ZAITSEV, A, ZALEWSKA, A, ZALEWSKI, P, ZAVRTANIK, D, ZEVGOLATOKOS, E, ZIMIN, N, ZITO, M, ZONTAR, D, ZUBERI, R, ZUCCHELLI, G, and ZUMERLE, G
Subjects: PARTICLE SPECTRA, QCD JETS, cross section, E+E-PHYSICS, LUND MONTE-CARLO, multiplicity, DELPHI, jet fragmentation, Z0 DECAYS, JET FRAGMENTATION, PARTON
Abstract: This analysis, based on a sample of 170000 hadronic Z0 decays, provides a measurement of the K± and p/p differential cross sections which is compared to string- and cluster fragmentation models. The total multiplicities for K± and p/p 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/p 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. © 1995.
Published: 1995

243. Search for promptly produced heavy quarkonium states in hadronic Z decays

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, A and Baillon, P Bambade, P Barao, F Barate, R Barbiellini, G and Bardin, DY Barker, GJ Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Belous, K Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Blyth, S Bocci, V Bolognese, T and Bonesini, M Bonivento, W Booth, PSL Borisov, G Bosio, C and Bosworth, S Botner, O Bouquet, B Bourdarios, C and Bowcock, TJV Bozzo, M Banchini, P Brand, KD Brenke, T and Brenner, RA Bricman, C Brillault, L Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T and Buschmann, P Buys, A Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carrilho, P Carroll, L Casco, C Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Chabaud, V and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F Crawley, HB and Crennell, D Crosetti, G Maestro, JC Czellar, S and DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G and Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoeck, H DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Dupont, F Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Ershaidat, N Erzen, B Santo, ME Falk, E and Fassouliotis, D Feindt, M Ferrer, A Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC and Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gasper, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gibbs, M Gokieli, R Golob, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, G Grzelak, K and Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Hao, W and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, G and Jarry, P JeanMaire, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F and Karafasoulis, K Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khomenko, BA Khovanski, NN and King, B Kjaer, NJ Klein, H Klovning, A Kluit, P and Koene, B Kokkinias, P Koratzinos, M Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Kramer, PH Krammer, M and Kreuter, C Krolikowski, J Kronkvist, I Krumstein, Z and Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Last, L Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V Legan, CK and Leitner, R Lemoigne, Y Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Liko, D Lindner, R Lipniacka, A and Lippi, I Loerstad, B Lokajicek, M Loken, JG Lopez, JM LopezFernandez, A Aguera, MAL Loukas, D Lutz, P and Lyons, L MacNaughton, J Maehlum, G Maio, A Malychev, V and Maocun, C Marco, J Marechal, B Margoni, M Marin, JC and Mariotti, C Markou, A Maron, T MartinezRivero, C and MartinezVidal, F MartiGarcia, S Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Meroni, C Meyer, S Meyer, WT Miagkov, A and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P and Pukhaeva, N Radojicic, D Ragazzi, S Rahmani, H Rames, J and Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK and Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, L and Romero, A Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Scilla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B and Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, L Stichelbaut, F Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Weierstall, ME Weilhammer, P and Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Yushchenko, O Zach, F Zacharatou, C and Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zuberi, R and Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment
Abstract: A search has been made for direct production of heavy quarkonium states in more than 3 million hadronic Z(0) decays in the 1991-1994 DELPHI data, Prompt J/psi, psi(2S) and Upsilon candidates have been searched for through their leptonic decay modes using criteria based on the kinematics and decay vertex positions. New upper limits are set at the 90% confidence level for Br(Z(0) –> (Q (Q) over bar) X)/Br(Z(0) –> hadrons) for various strong production mechanisms of J/psi and Upsilon; these range down to 0.9 x 10(-4). The limits are set in the presence of a small excess (similar to 1% statistical probability of a background fluctuation) in the sum of candidates from prompt J/psi, psi(2S), Upsilon(1S), Upsilon(2S) and Upsilon(3S) relative to the estimated background.
Published: 1995

244. Production of charged particles, K$_{S}^{0}$, K$^{\pm}$, p and $\Lambda$ in Z $\rightarrow b\overline{b}$ events and in the decay of b hadrons

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Azhinenko, I., Aleksan, R., Alekseev, G.D., Allport, P., Almehed, S., Almeida, F.M.L., Alvsvaag, S.J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M.L., Antilogus, P., Apel, W.D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Bardin, D.Yu., Barker, G., Baroncelli, A., Barring, O., Barrio, J.A., Bartl, W., Bates, M.J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K.H., Begalli, M., Beilliere, P., Belokopytov, Yu., Beltran, P., Benvenuti, A.C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenkii, M.S., Billoir, P., Bjarne, J., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P.S.L., Borisov, G., Bosio, C., Bostjancic, B., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Bozzo, M., Branchini, P., Brand, K.D., Brenner, R.A., Bricman, C., Brillault, L., Brown, R.C.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., Camacho Rozas, A.J., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., Cassio, V., Castillo Gimenez, M.V., Cattai, A., Cavallo, F.R., Cerrito, L., Chabaud, V., Chan, A., Chapkin, M., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G.A., Chliapnikov, P., Chochula, P., Chorowicz, V., Chrin, J.T., Cindro, V., Collins, P., Contreras, J.L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H.B., Crennell, D., Crosetti, G., Cuevas Maestro, J., Czellar, S., Dahl-Jensen, E., Dahm, J., D'Almagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P.D., Davenport, M., Da Silva, W., Defoix, C., Della Ricca, G., Delpierre, P., Demaria, N., De Angelis, A., De Boeck, H., De Boer, W., De Brabandere, S., De Clercq, C., De Fez Laso, M.D.M., De La Vaissiere, C., De Lotto, B., De Min, A., De Paula, L., De Saint-Jean, C., Dijkstra, H., Di Ciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K.A., Dris, M., Dufour, Y., Dupont, F., Ehret, R., Ekelof, T., Ekspong, G., Elsing, M., Engel, J.P., Ershaidat, W., Espirito Santo, M., Fassouliotis, D., Feindt, M., Ferrer, A., Filippas, T.A., Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Fousset, J.L., Franek, B., Frenkiel, P., Fries, D.C., Frodesen, A.G., Fulda-Quenzer, F., Furstenau, H., Fuster, J., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Gerber, J.P., Gillespie, D., Gokieli, R., Golob, B., Gomez, Y Cadenas J.J., Gopal, G., Gorn, L., Gorski, M., Gracco, V., Grard, F., Graziani, E., Grosdidier, G., Gunnarsson, P., Guy, J., Hadinger, U., Hahn, F., Hahn, M., Hahn, S., Haider, S., Hajduk, Z., Hakansson, A., Hallgren, A., Hamacher, K., Hao, W., Harris, F.J., Hedberg, V., Henriques, R., Hernandez, J.J., Hernando, J.A., Herquet, P., Herr, H., Hessing, T.L., Higon, E., Hilke, H.J., Hill, T.S., Holmgren, S.O., Holt, P.J., Holthuizen, D., Honore, P.F., Houlden, M., Hrubec, J., Huet, C., Hultqvist, K., Ioannou, P., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E.K., Jonsson, L., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E.C., Keranen, R., Khomenko, B.A., Khovanski, N.N., King, B., Kjaer, N.J., Klein, H., Klovning, A., Kluit, P., Kohne, J.H., Kone, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P.H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumstein, A., Krupinski, W., Kubinec, A., Kucewicz, W., Kulka, K., Kurvinen, K., Lacasta, C., Laktineh, I., Lambropoulos, C., Lamsa, J.W., Lanceri, L., Lane, D.W., Langefeld, P., Lapin, V., Last, I., Laugier, J.P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebvre, V., Legan, C.K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Lorstad, B., Lokajicek, M., Loken, J.G., Lopez-Fernandez, A., Lopez Aguera, M.A., Loukas, D., Lozano, J.J., Lutz, P., Lyons, L., Mahlum, G., Maillard, J., Maio, A., Maltezos, A., Malychev, V., Mandl, F., Marco, J., Marechal, B., Margoni, M., Marin, J.C., Mariotti, C., Markou, A., Maron, T., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., Medbo, J., Meroni, C., Meyer, W.T., Michelotto, M., Migliore, E., Mikulec, I., Mirabito, L., Mitaroff, W.A., Mjornmark, U., Moa, T., Moller, R., Monig, K., Monge, M.R., Morettini, P., Muller, H., Murray, W.J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F.L., Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B.S., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschulte-Beckmann, W., Obraztsov, V., Olshevski, A.G., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T., Pape, L., Parodi, F., Passeri, A., Pegoraro, M., Pennanen, J., Peralta, L., Perevozchikov, V., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H.T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, Stéphane, Podobrin, O., Pol, M.E., Polok, G., Poropat, P., Pozdnyakov, V., Prest, M., Privitera, P., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P.N., Read, A.L., Reale, M., Rebecchi, P., Redaelli, N.G., Regler, M., Reid, D., Renton, P.B., Resvanis, L.K., Richard, F., Richardson, M., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Ronzhin, V., Roos, L., Rosenberg, E.I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovskii, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, Henri, Schyns, M.A.E., Sciolla, G., Scuri, F., Sedykh, Yu., Segar, A.M., Seitz, A., Sekulin, R., Shellard, R.C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A.N., Sitar, B., Skaali, T.B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G.R., Sosnowski, R., Souza-Santos, D., Spassov, T.S., Spiriti, E., Sponholz, P., Squarcia, S., Stack, H., Stanescu, C., Stapnes, S., Stavitski, I., Stavropoulos, G., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J.P., Chikilev, O., Theodosiou, G., Tilquin, A., Timmermans, J., Tkatchev, L.G., Todorov, T., Toet, D.Z., Tomaradze, A., Tome, B., Torassa, E., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M.L., Tyapkin, I.A., Tyndel, M., Tzamarias, S., Uberschar, B., Uberschar, S., Ullaland, O., Uvarov, V.A., Valenti, G., Vallazza, E., Valls Ferrer, J.A., Van Apeldoorn, G.W., Van Dam, P., Van Doninck, W.K., Van Eldik, J., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L.S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A.S., Voutilainen, M., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A.M., Wicke, D., Wickens, J.H., Wielers, M., Wilkinson, G.R., Williams, W.S.C., Winter, M., Witek, Mm., Wormser, G., Woschnagg, K., Yip, K., Yu, Lianbo, Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N.I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G.C., Zumerle, G., 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 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), 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, 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), 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 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 Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published: 1995

245. B* production in Z decays

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Alvsvaag, S.J. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bloch, D. Blume, M. Blyth, S. Bocci, V. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bosworth, S. Botner, O. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenner, R.A. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Rozas, A.J.C. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Caso, C. Gimenez, M.V.C. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Maestro, J.C. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daum, A. Dauncey, P.D. Davenport, M. Da Silva, W. Defoix, C. Ricca, G.D. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.A. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Erzen, B. Santo, M.E. Falk, E. Fassouliotis, D. Feindt, M. Ferrer, A. Filippas, T.A. Firestone, A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Galloni, A. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gele, D. Gerber, J.-P. Gerdyukov, L. Gibbs, M. Gillespie, D. Gokieli, R. Golob, B. Gopal, G. Gorn, L. Gorski, M. Gouz, Yu. Gracco, V. Graziani, E. Grosdidier, G. Gunnarsson, P. Gunther, M. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Hajduk, Z. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Jonsson, P. Joram, C. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Korcyl, K. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kurvinen, K. Lacasta, C. Laktineh, I. Lamblot, S. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Lapin, V. Last, I. Laugier, J.P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez, J.M. Lopez-Fernandez, A. Aguera, M.A.L. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Maehlum, G. Maio, A. Malychev, V. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. Marti i Garcia, S. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Cubbin, M.M. Kay, R.Mc. Nulty, R.Mc. Medbo, J. Meroni, C. Meyer, W.T. Michelotto, M. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Mundim, L.M. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nieuwenhuizen, M. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Palka, H. Papadopoulou, Th.D. Pape, L. Parkes, C. Parodi, F. Passeri, A. Pegoraro, M. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Ronjin, V. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tavernet, J.P. Tchikilev, O. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vrba, V. Wahlen, H. Walck, C. Waldner, F. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Wormser, G. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zacharatou, C. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The decay B*→Bγ has been observed with the DELPHI detector at LEP, where the B* meson is produced in Z boson decays. The combination of inclusively reconstructed B mesons with well-measured converted photons yields a measurement of the flavour-averaged B*-B mass difference of 45.5±0.3 (stat.) ±0.8 (syst.) MeV/c2. 95% confidence level upper limits at 6 MeV/c2 are placed on both the isospin (i.e. B+-B0) and the Bs-Bud splitting of the mass difference. The production ratio of B* to B mesons in Z decays is measured to be 0.72±0.03 (stat.) ±0.06 (syst.). Limits on the production cross-section of other hypothetical excited B hadron states decaying radiatively are established. The differential B* cross section has been measured to be in good agreement with the average b fragmentation, yielding an average fractional B* energy of 〈xE〉=0.695±0.009 (stat.) ±0.013 (syst.). From the decay angular distribution the relative contribution of longitudinal B* polarisation states is measured to be σL/(σL + σT) = 0.32 ± 0.04 (stat.) ±0.03 (syst.). © 1995 Springer-Verlag.
Published: 1995

246. Search for heavy neutral Higgs bosons in two-doublet models

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Almeida, F.M.L. Alvsvaag, S.J. Amaldi, U. Amato, S. Andreazza, A. Andrieux, M.L. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Barbiellini, G. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Beltran, P. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bjarne, J. Bloch, D. Blume, M. Blyth, S. Bocci, V. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bostjancic, B. Bosworth, S. Botner, O. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Branchini, P. Brand, K.D. Brenner, R.A. Briand, H. Bricman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Rozas, A.J.C. Camporesi, T. Canale, V. Canepa, M. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Caso, C. Cassio, V. Gimenez, M.V.C. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Chan, A. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chliapnikov, P. Chochula, P. Chorowicz, V. Chrin, J.T.M. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Crawley, H.B. Crennell, D. Crosetti, G. Maestro, J.C. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daum, A. Dauncey, P.D. Davenport, M. Da Silya, W. Defoix, C. Ricca, G.D. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De Fez Laso, M.D.M. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Santo, M.E. Falaleev, V. Fassouliotis, D. Feindt, M. Fenyuk, A. Ferrer, A. Filippas, T.A. Firestone, A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Fousset, J.-L. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gerdyukov, L. Gillespie, D. Gokieli, R. Golob, B. Gomez Y Cadenas, J.J. Gopal, G. Gorn, L. Gorski, M. Gracco, V. Grard, F. Graziani, E. Grosdidier, G. Gunnarsson, P. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Haider, S. Hajduk, Z. Hakansson, A. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Hernando, J.A. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Honore, P.F. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.-H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krumstein, Z. Krupinski, W. Kubinec, P. Kucewicz, W. Kulka, K. Kurvinen, K. Lacasta, C. Laktineh, I. Lambropoulos, C. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Lapin, V. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Legan, C.K. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Levy, J.M. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez-Fernandez, A. Aguera, M.A.L. Los, M. Loukas, D. Lozano, J.J. Lutz, P. Lyons, L. Maehlum, G. Maillard, J. Maio, A. Maltezos, A. Malychev, V. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Martinez-Rivero, C. Martinez-Vidal, F. i Garcia, S.M. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Cubbin, M.M. Kay, R.M. Nulty, R.M. Medbo, J. Meroni, C. Meyer, W.T. Michelotto, M. Migliore, E. Mikulec, I. Mirabito, L. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Navas, S. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Oberschulte-Beckmann, W. Obraztsov, V. Olshevski, A.G. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pages, P. Pain, R. Palka, H. Papadopoulou, Th.D. Pape, L. Parodi, F. Passeri, A. Pegoraro, M. Pennanen, J. Peralta, L. Perevozchikov, V. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Sedykh, Y. Segar, A.M. Seitz, A. Sekulin, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Sitar, B. Skaali, T.B. Smadja, G. Smirnova, O. Smith, G.R. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stavropoulos, G. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tchikilev, O. Theodosiou, G.E. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Torassa, E. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tuuva, T. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Ferrer, J.A.V. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Doninck, W.K. Van Eldik, J. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voutilainen, M. Vrba, V. Wahlen, H. Walck, C. Waldner, F. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wicke, D. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Wormser, G. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A search for pair production of neutral heavy Higgs bosons decaying into {Mathematical expression} has been carried out in a study of hadronic decays of the Z boson into four jet final states using data taken by DELPHI in 1991 and 1992. The two production mechanisms present in the two Higgs doublets scheme, bremsstrahlung production of hZ* and associated production of hA, may lead to four beauty jets well recognizable using the precise microvertex detector measurements. No evidence for a signal was found, leading to limits on BR(Z→hA→4b) from 3.5 to 5.5×10-4 at 95% contidence level, depending on the mass of the ligthest Higgs. When combined with the results of the recent DELPHI standard Higgs search, this result allows the kinematical limit to be reached for the masses of h and A in the minimal supersymmetric extension of the Standard Model (MSSM) scheme. It also allows the tanβ≤1 domain to be explored, and a region above the kinematic limit for direct hA production is constrained by considering virtual hA production. Results are also given in the general two-doublet scheme. © 1995 Springer-Verlag.
Published: 1995

247. Measurement of the forward-backward asymmetry of e+e-→Z→ {Mathematical expression} using prompt leptons and a lifetime tag

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Almeida, F.M.L. Alvsvaag, S.J. Amaldi, U. Andreazza, A. Antilogus, P. Apel, W.-D. Apsimon, R.J. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Barbiellini, G. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Yu. Beltran, P. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bjarne, J. Bloch, D. Blyth, S. Bocci, V. Bogolubov, P.N. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bostjancic, B. Bosworth, S. Botner, O. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Braibant, S. Branchini, P. Brand, K.D. Brenner, R.A. Briand, H. Brieman, C. Brillault, L. Brown, R.C.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Caccia, M. Calvi, M. Camacho Rozas, A.J. Campion, R. Camporesi, T. Canale, V. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Cases, R. Caso, C. Cassio, V. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Chan, A. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chliapnikov, P. Chorowicz, V. Chrin, J.T.M. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Couchot, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daubie, E. Daum, A. Dauncey, P.D. Davenport, M. Davies, J. Da Silva, W. Defoix, C. Della Ricca, G. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De Fez Laso, M.D.M. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Dijkstra, H. Di Ciaccio, L. Djama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Santo, M.E. Fassouliotis, D. Feindt, M. Ferrer, A. Filippas, T.A. Firestone, A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Fousset, J.-L. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gerdyukov, L. Gillespie, D. Gokieli, R. Golob, B. Golovatyuk, V.M. Gomez Y Cadenas, J.J. Gopal, G. Gorn, L. Gorski, M. Gracco, V. Grard, F. Graziani, E. Grosdidier, G. Gunnarsson, P. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Haider, S. Hajduk, Z. Hakansson, A. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Hernando, J.A. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Honore, P.F. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Iversen, P.-S. Jackson, J.N. Jacobsson, R. Jalocha, P. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, L. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koch-Mehrin, A. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Korytov, A.V. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.-H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krupinski, W. Kucewicz, W. Kulka, K. Kurvinen, K. Lacasta, C. Laktineh, I. Lambropoulos, C. Lamsa, J.W. Lanceri, L. Langefeld, P. Lapin, V. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Levy, J.M. Lieb, E. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez-Fernandez, A. Lopez Aguera, M.A. Los, M. Loukas, D. Lozano, J.J. Lutz, P. Lyons, L. Maehlum, G. Maillard, J. Maio, A. Maltezos, A. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Marti, S. Martinez-Rivero, C. Martinez-Vidal, F. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Cubbin, M.M. Kay, R.M. Nulty, R.M. Medbo, J. Meroni, C. Meyer, W.T. Miagkov, A. Michelotto, M. Migliore, E. Mirabito, L. Mitaroft, W.A. Mitselmakher, G.V. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Negri, P. Nemecek, S. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nikolaenko, V. Niss, P. Nomerotski, A. Normand, A. Obraztsov, V. Olshevski, A.G. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pain, R. Palka, H. Papadopoulou, Th.D. Pape, L. Parodi, F. Passeri, A. Pegoraro, M. Pennanen, J. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdiniakov, V. Prest, M. Privitera, P. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Segar, A.M. Seitz, A. Sekulin, R. Seufert, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sokolov, A. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stavropoulos, G. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strauss, J. Straver, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tchikilev, O. Theodosiou, G.E. Thome, Z. Tilquin, A. Timmermans, J. Timofeev, V.G. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Torassa, E. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Troncon, C. Tsirou, A. Tsyganov, E.N. Turluer, M.-L. Tuuva, T. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Valls Ferrer, J.A. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Der Heijden, M. Van Doninck, W.K. Van Eldik, J. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vollmer, M. Voutilainen, M. Vrba, V. Wahlen, H. Walck, C. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Wormser, G. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zumerle, G.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The forward-backward asymmetry of the process e+e-→Z→b {Mathematical expression} has been measured using events collected by the DELPHI experiment during the 1991 and 1992 LEP runs. This data sample corresponded to 884 000 hadronic Z decays at a centre-of-mass energy {Mathematical expression}. The tagging of b-quark events was performed using two approaches; the first was based on the semileptonic decay channels b→X+μ and b→X+e, the second used a lifetime tag with jet-charge reconstruction. The results of these two methods were combined to give {Mathematical expression} With the semileptonic sample, the forward-backward asymmetry of the process e+e-→Z→ {Mathematical expression} was also measured to be {Mathematical expression} The effective value of the Weinberg mixing angle derived from these measurements was {Mathematical expression} © 1995 Springer-Verlag.
Published: 1995

248. OBSERVATION OF SHORT-RANGE 3-PARTICLE CORRELATIONS IN E(+)E(-) ANNIHILATIONS AT LEP ENERGIES

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML and ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE and AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARKER, GJ BARONCELLI, A and BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELOUS, K BENVENUTI, AC and BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS and BILLOIR, P BLOCH, D BLUME, M BLYTH, S BOCCI, V and BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL and BORISOV, G BOSIO, C BOSWORTH, S BOTNER, O BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENNER, RA BRICMAN, C BRILLAULT, L BROWN, RCA and BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BUYS, A and CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V and CANEPA, M CANKOCAK, K CAO, F CARENA, F CARRILHO, P and CARROLL, L CASO, C GIMENEZ, MVC CATTAI, A CAVALLO, FR and CERRITO, L CHABAUD, V CHARPENTIER, P CHAUSSARD, L and CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHIERICI, R and CHOCHULA, P CHOROWICZ, V CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F and CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, WE and DEFOIX, C RICCA, GD DELPIERRE, P DEMARIA, N DEANGELIS, A and DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERCQ, C and DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L and DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F and DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J and DREES, KA DRIS, M DUFOUR, Y DUPONT, F EDSALL, D and EHRET, R EIGEN, G EKELOF, T EKSPONG, G ELSING, M and ENGEL, JP ERSHAIDAT, N ERZEN, B SANTO, ME FALK, E and FASSOULIOTIS, D FEINDT, M FENYUK, A FERRER, A FILIPPAS, TA FIRESTONE, A FISCHER, PA FOETH, H FOKITIS, E and FONTANELLI, F FORMENTI, F FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GALLONI, A GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P and GAZIS, EN GELE, D GERBER, JP GIBBS, M GILLESPIE, D and GOKIELI, R GOLOB, B GOPAL, G GORN, L GORSKI, M GOUZ, Y GRACCO, V GRAZIANI, E GROSDIDIER, G GUNNARSSON, P and GUNTHER, M GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HAJDUK, Z HALLGREN, A HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERQUET, P and HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS and HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D HOULDEN, M HUET, K and HULTQVIST, K IOANNOU, P JACKSON, JN JACOBSSON, R and JALOCHA, P JANIK, R JARLSKOG, G JARRY, P JEANMARIE, B and JOHANSSON, EK JONSSON, L JONSSON, P JORAM, C and JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M and KARVELAS, E KATARGIN, A KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ and KLEIN, H KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B and KOKKINIAS, P KORATZINOS, M KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KRAMMER, M KREUTER, C and KROLIKOWSKI, J KRONKVIST, I KRUMSTEIN, Z KRUPINSKI, W and KUBINEC, P KUCEWICZ, W KURVINEN, K LACASTA, C LAKTINEH, I LAMBLOT, S LAMSA, JW LANCERI, L LANE, DW and LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R and LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LESIAK, T LIKO, D LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZ, JM and LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LUTZ, P LYONS, L and MACNAUGHTON, J MAEHLUM, G MAIO, A MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC and MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C and MARTINEZVIDAL, F GARCIA, SM MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R and MEDBO, J MERONI, C MEYER, WT MIAGKOV, A MICHELOTTO, M MIGLIORE, E MIRABITO, L MITAROFF, WA MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MUNDIM, LM MURRAY, WJ MURYN, B MYATT, G and NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S and NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS and NIEUWENHUIZEN, M NIKOLAENKO, V NISS, P NOMEROTSKI, A and NORMAND, A OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG and ONOFRE, A ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAGES, P PALKA, H PAPADOPOULOU, TD and PAPE, L PARKES, C PARODI, F PASSERI, A PEGORARO, M and PERALTA, L PERNEGGER, H PERNICKA, M PERROTTA, A and PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F and PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME and POLOK, G POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P and PUKHAEVA, N PULLIA, A RADOJICIC, D RAGAZZI, S and RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M and REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB and RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J and RINAUDO, G RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P and ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T and RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A SAARIKKO, H and SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J and SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F and SEDYKH, Y SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC and SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N and SMIRNOVA, O SMITH, GR SOKOLOV, A SOSNOWSKI, R and SOUZASANTOS, D SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, I STEPANIAK, K and STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R STUGU, B and SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T TOET, DZ and TOMARADZE, A TOME, B TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TROMBINI, A TRONCON, C and TSIROU, A TURLUER, ML TYAPKIN, IA TYNDEL, M TZAMARIAS, S and UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O VALENTI, G and VALLAZZA, E VELDE, CV VANAPELDOORN, GW VANDAM, P and VANELDIK, J VASSILOPOULOS, N VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D and VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VRBA, V and WAHLEN, H WALCK, C WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKE, D WICKENS, JH WIELERS, M and WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M and WOSCHNAGG, K YIP, K YUSHCHENKO, O ZACH, F ZACHARATOU, C and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D and ZEVGOLATAKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R and ZUCCHELLI, GC ZUMERLE, G
Subjects: High Energy Physics::Experiment
Abstract: Measurements are presented of short range three-particle correlations in e(+)e(-) annihilations at LEP using data collected by the DELPHI detector. At small values of the four-momentum difference, strong three-particle correlations are observed for like-sign (+++ and —) and for unlike-sign (++- and +–) pion combinations which are not a consequence of two-particle correlations. A possible explanation of the observed effects in like-sign combinations is the existence of higher order Bose-Einstein interference, which significantly changes the particle distributions in jets.
Published: 1995

249. B-asterisk Production In Z-decays

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Allport, P. P., Almehed, S., Alvsvaag, S. J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Bardin, D. Y., Barker, G. J., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Benvenuti, A. C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P. S. L., Borisov, G., Bosio, C., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenner, R. A., Bricman, C., Brillault, L., Brown, R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., Rozas, A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., Gimenez, M. V. C., Cattai, A., Cavallo, F. R., Cerrito, L., Chabaud, V., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboeck, H., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Dufour, Y., Dupont, F., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Ershaidat, N., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Ferrer, A., Filippas, T. A., Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Furstenau, H., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gerdyukov, L., Gibbs, M., Gillespie, D., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Gunnarsson, P., Gunther, M., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Joannou, P., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koehne, J. H., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Lopez, J. M., Lopezfernandez, A., Aguera, M. A. L., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., Malychev, V., Marco, J., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., Garcia, S. M., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Meroni, C., Meyer, W. T., Michelotto, M., Migliore, E., Mirabito, L., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L., Mitaroff, W. A., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Ronjin, V., Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, H., Schyns, M. A. E., Sciolla, G., Scuri, F., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Squarcia, S., Staeck, H., Stanescu, C., Stapnes, S., Stavitski, I., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Toet, D. Z., Tomaradze, A., Tome, B., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ueberschaer, S., Ullaland, O., Uvarov, V., Valenti, G., Erik Silvio Vallazza, Velde, C. V., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., Williams, W. S. C., Winter, M., Witek, M., Wormser, G., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zacharatou, C., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G. C., and Zumerle, G.
Subjects: B*-B mass difference, STAR CROSS-SECTION, DELPHI, B meson, MESONS
Published: 1995

250. A study of radiative muon-pair events at Z0 energies and limits on an additional Z′ gauge beson

Author: Abreu, P. Adam, W. Adye, T. Agasi, E. Ajinenko, I. Aleksan, R. Alekseev, G.D. Allport, P.P. Almehed, S. Almeida, F.M.L. Alvsvaag, S.J. Amaldi, U. Andreazza, A. Antilogus, P. Apel, W.-D. Apsimon, R.J. Arnoud, Y. Asman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barate, R. Bardin, D.Y. Barker, G.J. Baroncelli, A. Barring, O. Barrio, J.A. Bartl, W. Bates, M.J. Battaglia, M. Baubillier, M. Baudot, J. Becks, K.-H. Begalli, M. Beilliere, P. Beltran, P. Benvenuti, A.C. Berggren, M. Bertrand, D. Bianchi, F. Bigi, M. Bilenky, M.S. Billoir, P. Bjarne, J. Bloch, D. Blocki, J. Blyth, S. Bocci, V. Bogolubov, P.N. Bolognese, T. Bonesini, M. Bonivento, W. Booth, P.S.L. Borisov, G. Bosio, C. Bostjancic, B. Bosworth, S. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Bozzo, M. Braibant, S. Branchini, P. Brand, K.D. Brenner, R.A. Briand, H. Bricman, C. Brillault, L. Brown, R.C.A. Brunet, J.-M. Bugge, L. Buran, T. Buys, A. Buytaert, J.A.M.A. Caccia, M. Calvi, M. Camacho Rozas, A.J. Campion, R. Camporesi, T. Capale, V. Cankocak, K. Cao, F. Carena, F. Carrilho, P. Carroll, L. Cases, R. Caso, C. Castillo Gimenez, M.V. Cattai, A. Cavallo, F.R. Cerrito, L. Chabaud, V. Chan, A. Chapkin, M. Charpentier, Ph. Chaussard, L. Chauveau, J. Checchia, P. Chelkov, G.A. Chliapnikov, P. Chorowicz, V. Chrin, J.T.M. Cindro, V. Collins, P. Contreras, J.L. Contri, R. Cortina, E. Cosme, G. Cosmo, G. Cossutti, C. Couchot, F. Crawley, H.B. Crennell, D. Crosetti, G. Cuevas Maestro, J. Czellar, S. Dahl-Jensen, E. Dahm, J. Dalmagne, B. Dam, M. Damgaard, G. Daubie, E. Daum, A. Dauncey, P.D. Davenport, M. Davies, J. Da Silva, W. Defoix, C. Delpierre, P. Demaria, N. De Angelis, A. De Boeck, H. De Boer, W. De Brabandere, S. De Clercq, C. De Fez Laso, M.D.M. De La Vaissiere, C. De Lotto, B. De Min, A. De Paula, L. De Saint-Jean, C. Diikstra, H. Di Ciaccio, L. Diama, F. Dolbeau, J. Donszelmann, M. Doroba, K. Dracos, M. Drees, J. Dris, M. Dufour, Y. Dupont, F. Edsall, D. Ehret, R. Ekelof, T. Ekspong, G. Elsing, M. Engel, J.-P. Ershaidat, N. Espirito Santo, M. Fassouliotis, D. Feindt, M. Fenyuk, A. Ferrer, A. Filippas, T.A. Firestone, A. Foeth, H. Fokitis, E. Fontanelli, F. Formenti, F. Fousset, J.-L. Franek, B. Frenkiel, P. Fries, D.C. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Furstenau, H. Fuster, J. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Giacomelli, P. Gillespie, D. Gokieli, R. Golob, B. Golovatyuk, V.M. Gomez Y Cadenas, J.J. Gopal, G. Gorn, L. Gorski, M. Gracco, V. Grard, F. Graziani, E. Grosdidier, G. Gunnarsson, P. Guy, J. Haedinger, U. Hahn, F. Hahn, M. Hahn, S. Haider, S. Hajduk, Z. Hakansson, A. Hallgren, A. Hamacher, K. Hao, W. Harris, F.J. Hedberg, V. Henriques, R. Hernandez, J.J. Hernando, J.A. Herquet, P. Herr, H. Hessing, T.L. Higon, E. Hilke, H.J. Hill, T.S. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Honore, P.F. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Ioannou, P. Iversen, P.-S. Jackson, J.N. Jacobsson, R. Jalocha, P. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonker, M. Jonsson, L. Juillot, P. Kaiser, M. Kalmus, G. Kapusta, F. Karlsson, M. Karvelas, E. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. King, B. Kjaer, N.J. Klein, H. Klovning, A. Kluit, P. Koch-Mehrin, A. Koehne, J.H. Koene, B. Kokkinias, P. Koratzinos, M. Korcyl, K. Korytov, A.V. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Kramer, P.H. Krammer, M. Kreuter, C. Krolikowski, J. Kronkvist, I. Krupinski, W. Kulka, K. Kurvinen, K. Lacasta, C. Laktineh, I. Lambropoulos, C. Lamsa, J.W. Lanceri, L. Langefeld, P. Lapin, V. Last, I. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Leitner, R. Lemoigne, Y. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Levy, J.M. Lieb, E. Liko, D. Lindner, R. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopez-Fernandez, A. Lopez Aguera, M.A. Los, M. Loukas, D. Lozano, J.J. Lutz, P. Lyons, L. Maehlum, G. Maillard, J. Maio, A. Maltezos, A. Mandl, F. Marco, J. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Maron, T. Marti, S. Martinez-Rivero, C. Martinez-Vidal, F. Matorras, F. Matteuzzi, C. Matthiae, G. Mazzucato, M. Cubbin, M.M. Kay, R.M. Nulty, R.M. Medbo, J. Meroni, C. Meyer, W.T. Michelotto, M. Migliore, E. Mikulec, I. Mirabito, L. Mitaroff, W.A. Mitselmakher, G.V. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Morettini, P. Mueller, H. Murray, W.J. Muryn, B. Myatt, G. Naraghi, F. Navarria, F.L. Negri, P. Nemecek, S. Neumann, R. Nicolaidou, R. Nielsen, B.S. Niss, P. Nomerotski, A. Normand, A. Obraztsov, V. Olshevski, A.G. Orava, R. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Pain, R. Palka, H. Papadopoulou, Th.D. Pape, L. Parodi, F. Passeri, A. Pegararo, M. Pennanen, J. Peralta, L. Pernegger, H. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Plaszczynski, S. Podobrin, O. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Prest, M. Privitera, P. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rames, J. Ratoff, P.N. Read, A.L. Reale, M. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Renton, P.B. Resvanis, L.K. Richard, F. Richardson, J. Ridky, J. Rinaudo, G. Ripp, I. Romero, A. Roncagliolo, I. Ronchese, P. Roos, L. Rosenberg, E.I. Rosso, E. Roudeau, P. Rovelli, T. Ruckstuhl, W. Ruhlmann-Kleider, V. Ruiz, A. Rybicki, K. Saarikko, H. Sacquin, Y. Sajot, G. Salt, J. Sanchez, J. Sannino, M. Schael, S. Schneider, H. Schyns, M.A.E. Sciolla, G. Scuri, F. Segar, A.M. Seitz, A. Sekulin, R. Seufert, R. Shellard, R.C. Siccama, I. Siegrist, P. Simonetti, S. Simonetto, F. Sisakian, A.N. Skaali, T.B. Smadja, G. Smirnov, N. Smirnova, O. Smith, G.R. Sosnowski, R. Souza-Santos, D. Spassov, T. Spiriti, E. Squarcia, S. Staeck, H. Stanescu, C. Stapnes, S. Stavitski, I. Stavropoulos, G. Stepaniak, K. Stichelbaut, F. Stocchi, A. Strauss, J. Straver, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tchikilev, O. Theodosiou, G.E. Thome, Z. Tilquin, A. Timmermans, J. Timofeev, V.G. Tkatchev, L.G. Todorov, T. Toet, D.Z. Tomaradze, A. Tome, B. Torassa, E. Tortora, L. Transtromer, G. Treille, D. Trischuk, W. Tristram, G. Troncon, C. Tsirou, A. Tsyganov, E.N. Turala, M. Turluer, M.-L. Tuuva, T. Tyapkin, I.A. Tyndel, M. Tzamarias, S. Ueberschaer, B. Ueberschaer, S. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. Valls Ferrer, J.A. Vander Velde, C. Van Apeldoorn, G.W. Van Dam, P. Van Der Heijden, M. Van Doninck, W.K. Van Eldik, J. Vaz, P. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Vilanova, D. Vincent, P. Vitale, L. Vlasov, E. Vodopyanov, A.S. Vollmer, M. Voutilainen, M. Wahlen, H. Walck, C. Wehr, A. Weierstall, M. Weilhammer, P. Wetherell, A.M. Wickens, J.H. Wielers, M. Wilkinson, G.R. Williams, W.S.C. Winter, M. Witek, M. Wormser, G. Woschnagg, K. Yip, K. Yushchenko, O. Zach, F. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zito, M. Zontar, D. Zuberi, R. Zumerle, G.
Subjects: High Energy Physics::Experiment
Abstract: An analysis is reported on the channel e+e-→μ+μ- (nγ), n=1,2..., using data taken with the DELPHI detector at LEP from 1990 to 1992. Differential cross sections of the radiative photons as a function of photon energy and of the angle between the photon and the muon are presented. No significant deviations from expectations are observed. The data are also used to extract the muon-pair cross section and asymmetry below the Z0 peak by using those events with relatively hard initial state radiative photon(s). The measured cross section and asymmetry show no significant deviation from the Standard Model expectations. These results together with the DELPHI cross section and asymmetry measurements at the LEP energies from the 1990 to 1992 running periods are used to determine limits on the Z0-Z′ gauge boson mixing angle θZ′ and on the Z′ mass. There is no indication of the existence of a Z′; the limits obtained on the mixing angle substantially improve upon existing limits. The 95% confidence level allowed ranges of θZ′ in various models are: {Mathematical expression} © 1995 Springer-Verlag.
Published: 1995

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