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A precise measurement of the partial decay width ratio R-b(0) = Gamma(b(b)over-bar)/Gamma(had)
Authors :
Abreu, P Adam, W Adye, T Adzic, P Albrecht, Z and Alderweireld, T Alekseev, GD Alemany, R Allmendinger, T and Allport, PP Almehed, S Amaldi, U Amato, S Anassontzis, EG Andersson, P Andreazza, A Andringa, S Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G and Barbier, R Bardin, DY Barker, G Baroncelli, A Battaglia, M Baubillier, M Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Belous, K Benvenuti, AC Berat, C and Berggren, M Bertini, D Bertrand, D Besancon, M Bianchi, F Bigi, M Bilenky, MS Bizouard, MA Bloch, D Blom, HM and Bonesini, M Bonivento, W Boonekamp, M Booth, PSL and Borgland, AW Borisov, G Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Boyko, I and Bozovic, I Bozzo, M Branchini, P Brenke, T Brenner, RA and Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Cabrera, S Caccia, M Calvi, M Camporesi, T Canale, V Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Chapkin, M Charpentier, P Chaussard, L Checchia, P and Chelkov, GA Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Chudoba, J Cieslik, K Collins, P Contri, R and Cortina, E Cosme, G Cossutti, F Cowell, JH Crawley, HB Crennell, D Crepe, S Crosetti, G Maestro, JC and Czellar, S Damgaard, G Davenport, M Da Silva, W and Deghorain, A Della Ricca, G Delpierre, P Demaria, N De Angelis, A De Boer, W De Brabandere, S De Clercq, C De Lotto, B De Min, A De Paula, L Dijkstra, H Di Ciaccio, L and Dolbeau, J Doroba, K Dracos, M Drees, J Dris, M and Duperrin, A Durand, JD Eigen, G Ekelof, T Ekspong, G and Ellert, M Elsing, M Engel, JP Erzen, B Santo, ME and Falk, E Fanourakis, G Fassouliotis, D Fayot, J Feindt, M and Fenyuk, A Ferrari, P Ferrer, A Ferrer-Ribas, E and Fichet, S Firestone, A Flagmeyer, U Foeth, H Fokitis, E and Fontanelli, F Franek, B Frodesen, AG Fruhwirth, R and Fulda-Quenzer, F Fuster, J Galloni, A Gamba, D Gamblin, S Gandelman, M Garcia, C Gaspar, C Gaspar, M and Gasparini, U Gavillet, P Gazis, EN Gele, D Ghodbane, N and Gil, I Glege, F Gokieli, R Golob, B Gomez-Ceballos, G Goncalves, P Caballero, IG Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Grahl, J Graziani, E and Green, C Grimm, HJ Gris, P Grosdidier, G Grzelak, K and Gunther, M Guy, J Hahn, F Hahn, S Haider, S and Hallgren, A Hamacher, K Hansen, J Harris, FJ Hedberg, V and Heising, S Hernandez, JJ Herquet, P Herr, H Hessing, TL Heuser, JM Higon, E Holmgren, SO Holt, PJ and Hoorelbeke, S Houlden, M Huet, K Hughes, GJ Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P Jean-Marie, B and Johansson, EK Jonsson, P Joram, C Juillot, P Kapusta, F and Karafasoulis, K Katsanevas, S Katsoufis, EC Keranen, R and Kersevan, BP Khomenko, BA Khovanski, NN Kiiskinen, A and King, B Kinvig, A Kjaer, NJ Klapp, O Klein, H Kluit, P Kokkinias, P Koratzinos, M Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kriznic, E and Krstic, J Krumstein, Z Kubinec, P Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F Lefebure, V and Leinonen, L Leisos, A Leitner, R Lenzen, G Lepeltier, V and Lesiak, T Lethuillier, M Libby, J Liko, D Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM and Lopez-Fernandez, R Loukas, D Lutz, P Lyons, L and MacNaughton, J Mahon, JR Maio, A Malek, A Malmgren, TGM and Malychev, V Mandl, F Marco, J Marco, R Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A and Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI Masik, J and Mastroyiannopoulos, N Matorras, F Matteuzzi, C Matthiae, G Mazzucato, F Mazzucato, M Mc Cubbin, M Mc Kay, R and Mc Nulty, R Mc Pherson, G Meroni, C Meyer, WT Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T and Moch, M Moeller, R Moenig, K Monge, MR Moreau, X and Morettini, P Morton, G Mueller, U Muenich, K Mulders, M and Mulet-Marquis, C Muresan, R Murray, WJ Muryn, B and Myatt, G Myklebust, T Naraghi, F Navarria, FL Navas, S and Nawrocki, K Negri, P Neufeld, N Neumeister, N and Nicolaidou, R Nielsen, BS Nikolenko, M Nomokonov, V and Normand, A Nygren, A Obraztsov, V Olshevski, AG Onofre, A Orava, R Orazi, G Osterberg, K Ouraou, A Paganoni, M Paiano, S Pain, R Paiva, R Palacios, J Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Parzefall, U Passeri, A Passon, O Pegoraro, M and Peralta, L Pernicka, M Perrotta, A Petridou, C and Petrolini, A Phillips, HT Pierre, F Pimenta, M Piotto, E and Podobnik, T Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Rakoczy, D Ratoff, PN Read, AL and Rebecchi, P Redaelli, NG Regler, M Reid, D Reinhardt, R and Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Rohne, O Romero, A Ronchese, P Rosenberg, EI and Rosinsky, P Roudeau, P Rovelli, T Royon, C and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Schneider, H Schwemling, P Schwickerath, U Schyns, MAE and Scuri, F Seager, P Sedykh, Y Segar, AM Sekulin, R and Shellard, RC Sheridan, A Siebel, M Simard, L and Simonetto, F Sisakian, AN Smadja, G Smirnov, N Smirnova, O Smith, GR Sopczak, A Sosnowski, R Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stampfer, D Stanescu, C Stanic, S Stevenson, K Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tegenfeldt, F Terranova, F Thomas, J Timmermans, J and Tinti, N Tkatchev, LG Todorova, S Tomaradze, A Tome, B and Tonazzo, A Tortora, L Transtromer, G Treille, D and Tristram, G Trochimczuk, M Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tzamarias, S Ueberschaer, B Ullaland, O and Uvarov, V Valenti, G Vallazza, E Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eldik, J Van Lysebetten, A and Van Vulpen, I Vassilopoulos, N Vegni, G Ventura, L and Venus, W Verbeure, F Verlato, M Vertogradov, LS Verzi, V and Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Vollmer, C Voulgaris, G Vrba, V Wahlen, H Walck, C and Weiser, C Wicke, D Wickens, JH Wilkinson, GR Winter, M and Witek, M Wolf, G Yi, J Yushchenko, O Zaitsev, A and Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E and Zimin, NI Zucchelli, GC Zumerle, G DELPHI Collaboration
Publication Year :
1999
Abstract
The partial decay width of the Z to b (b) over bar quark pairs has been measured by the DELPHI detector at LEP using data taken in the years 1992 to 1995. Decays of b-hadrons were tagged by several methods using tracks with large impact parameters and/or reconstructed secondary vertices; complemented by event shape variables. Combining these methods in a multivariate analysis the value Gamma(Z –> b (b) over bar)/Gamma(Z –> had) = 0.21634 +/- 0.00067(stat) +/- 0.00060(syst) was obtained, where the c (c) over bar production fraction was fixed to its Standard Model value.
Details
Language :
English
Database :
OpenAIRE
Accession number :
edsair.od......2127..fe020efa51c041024b8d26e96c8ea11e