The B-0-B-0 average mixing parameter <(chi)over bar> and b forward-backward asymmetry A(FB)(0)(b) are measured from a sample of about 4200000 Z--><q(q)over bar> events recorded with the ALEPH detector at LEP in the years 1990-1995. High transverse momentum electrons and muons produced in b semileptonic decays provide the tag of the quark flavour and of its charge. The average mixing parameter and the pole b asymmetry are measured to be <(chi)over bar>=0.1246+/-0.0051(stat)+/-0.0052(syst), A(FB)(0)(b)=0.1008+/-0.0043(stat)+/-0.0028(syst). The value of sin(2) theta(W)(eff)=0.23198+/-0.00092 is extracted from the asymmetry measurement.

Measurement of the b forward-backward asymmetry and mixing using high-p(perpendicular to) leptons / D. Buskulic, I. DeBonis, D. Decamp, P. Ghez, C. Goy, J. Lees, A. Lucotte, M. Minard, P. Odier, B. Pietrzyk, M. Casado, M. Chmeissani, J. Crespo, M. Delfino, I. Efthymiopoulos, E. Fernandez, M. FernandezBosman, L. Garrido, A. Juste, M. Martinez, S. Orten, A. Pacheco, C. Padilla, A. Pascual, J. Perlas, I. Riu, F. Sanchez, F. Teubert, A. Coaleo, D. Creanza, M. dePalma, G. Gelao, M. Girone, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, X. Ru, S. Xue, J. Zhang, L. Zhang, W. Zhao, R. Alemany, A. Bazarko, G. Bonvicini, M. Cattaneo, P. Comas, P. Coyle, H. Drevermann, R. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, E. Martin, P. Mato, A. Minten, R. Miquel, L. Mir, L. Moneta, T. Oest, F. Palla, J. Pater, J. Pusztaszeri, F. Ranjard, P. Rensing, L. Rolandi, D. Schlatter, M. Schmelling, O. Schneider, W. Tejessy, I. Tomalin, A. Venturi, H. Wachsmuth, A. Wagner, T. Wildish, Z. Ajaltouni, A. Barres, C. Boyer, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. Montret, D. Pallin, P. Perret, F. Podlyski, J. Proriol, J. Rossignol, T. Fearnley, J. Hansen, J. Hansen, J. Hansen, P. Hansen, B. Nilsson, A. Waananen, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J. Brient, P. Bourdon, A. Rouge, M. Rumpf, A. Valassi, M. Verderi, H. Videau, D. Candlin, M. Parsons, E. Focardi, G. Parrini, M. Corden, C. Georgiopoulos, D. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, D. Casper, V. Chiarella, G. Felici, P. Laurelli, C. Mannocchi, F. Murtas, G. Murtas, L. Passalacqua, M. PepeAltarelli, L. Curtis, S. Dorris, A. Halley, I. Knowles, J. Lynch, V. OShea, C. Raine, P. Reeves, J. Scarr, K. Smith, A. Thompson, F. Thomson, S. Thorn, R. Turnbull, U. Becker, C. Geweniger, G. Graefe, P. Hanke, G. Hansper, V. Hepp, E. Kluge, A. Putzer, B. Rensch, M. Schmidt, J. Sommer, H. Stenzel, K. Tittel, S. Werner, M. Wunsch, D. Abbaneo, R. Beuselinck, D. Binnie, W. Cameron, P. Dornan, A. Moutoussi, J. Nash, J. Sedgbeer, A. Stacey, M. Williams, G. Dissertori, P. Girtler, D. Kuhn, G. Rudolph, A. Betteridge, C. Bowdery, P. Colrain, G. Crawford, A. Finch, E. Foster, G. Hughes, T. Sloan, M. Williams, A. Galla, A. Greene, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. Sander, P. vanGemmeren, C. Zeitnitz, J. Aubert, A. Bencheikh, C. Benchouk, A. Bonissent, C. Bujosa, D. Calvet, J. Carr, C. Diaconu, F. Etienne, N. Konstantinidis, P. Payre, D. Rousseau, M. Talby, A. Sadouki, M. Thulasidas, K. Trabelsi, M.R.A. Aleppo, F. Ragusa, I. Abt, R. Assmann, C. Bauer, W. Blum, H. Diet, F. Dydak, G. Ganis, C. Gotzhein, K. Jakobs, H. Kroh, G. Lutjens, G. Lutz, W. Manner, H. Moser, R. Richter, A. RosadoSchlosser, S. Schael, R. Settles, H. Seywerd, R. StDenis, W. Wiedenmann, G. Wolf, J. Boucrot, O. Callot, A. Cordier, M. Davier, L. Duflot, J. Grivaz, P. Heusse, M. Jacquet, D. Kim, F. LeDiberder, J. Lefrancois, A. Lutz, I. Nikolic, H. Park, I. Park, M. Schune, S. Simion, J. Veillet, I. Videau, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, C. Bozzi, G. Calderini, M. Carpinelli, M. Ciocci, V. Ciulli, R. DellOrso, R. Fantechi, I. Ferrante, L. Foa, F. Forti, A. Giassi, M. Giorgi, A. Gregorio, F. Ligabue, A. Lusiani, P. Marrocchesi, A. Messineo, G. Rizzo, G. Sanguinetti, A. Sciaba, P. Spagnolo, J. Steinberger, R. Tenchini, G. Tonelli, C. Vannini, P. Verdini, J. Walsh, G. Blair, L. Bryant, F. Cerutti, J. Chambers, Y. Gao, M. Green, T. Medcalf, P. Perrodo, J. Strong, J. vonWimmerspergToeller, D. Botterill, R. Clifft, T. Edgecock, S. Haywood, P. Maley, P. Norton, J. Thompson, A. Wright, B. BlochDevaux, P. Colas, S. Emery, W. Kozanecki, E. Lancon, M. Lemaire, E. Locci, B. Marx, P. Perez, J. Rander, J. Renard, A. Roussarie, J. Schuller, J. Schwindling, A. Trabelsi, B. Vallage, S. Black, J. Dann, R. Johnson, H. Kima, K. Litke, M. McNeil, G. Taylor, C. Booth, R. Boswell, C. Brew, S. Cartwright, F. Combley, A. Koksal, M. Letho, W. Newton, J. Reeve, L. Thompson, A. Bohrer, S. Brandt, V. Buscher, G. Cowan, C. Grupen, G. Lutters, J. MinguetRodriguez, F. Rivera, P. Saraiva, L. Smolik, E. Stephan, M. Apollonio, L. Bosisio, R. DellaMarina, G. Giannini, B. Gobbo, G. Musolino, J. Rothberg, S. Wasserbaech, S. Armstrong, L. Bellantoni, P. Elmer, Z. Feng, D. Ferguson, Y. Gao, S. Gonzalez, J. Grahl, T. Greening, J. Harton, O. Hayes, H. Hu, P. McNamara, J. Nachtman, W. Orejudos, Y. Pan, Y. Saadi, M. Schmitt, I. Scott, V. Sharma, A. Walsh, S. Wu, X. Wu, J. Yamartino, M. Zheng, G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 384:1-4(1996), pp. 414-426.

Measurement of the b forward-backward asymmetry and mixing using high-p(perpendicular to) leptons

M.R.A. Aleppo;F. Ragusa;
1996

Abstract

The B-0-B-0 average mixing parameter <(chi)over bar> and b forward-backward asymmetry A(FB)(0)(b) are measured from a sample of about 4200000 Z--> events recorded with the ALEPH detector at LEP in the years 1990-1995. High transverse momentum electrons and muons produced in b semileptonic decays provide the tag of the quark flavour and of its charge. The average mixing parameter and the pole b asymmetry are measured to be <(chi)over bar>=0.1246+/-0.0051(stat)+/-0.0052(syst), A(FB)(0)(b)=0.1008+/-0.0043(stat)+/-0.0028(syst). The value of sin(2) theta(W)(eff)=0.23198+/-0.00092 is extracted from the asymmetry measurement.
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
1996
Article (author)
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/176917
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 19
  • ???jsp.display-item.citation.isi??? 18
social impact