Limit on B$^{0}_{s}$ oscillation using a jet charge method

A lower limit is set on the B_{s}^{0} meson oscillation parameter \Delta m_{s} using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a reconstructed secondary vertex are used. The high transverse momentum leptons are produced mainly by b hadr...

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Detalles Bibliográficos
Autores principales: Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, Lucotte, A, Minard, M N, Odier, P, Pietrzyk, B, Ariztizabal, F, Chmeissani, M, Crespo, J M, Efthymiopoulos, I, Fernández, E, Fernández-Bosman, M, Gaitan, V, Garrido, L, Martínez, M, Orteu, S, Pacheco, A, Padilla, C, Palla, Fabrizio, Pascual, A, Perlas, J A, Sánchez, F, Teubert, F, Colaleo, A, Creanza, D, De Palma, M, Farilla, A, Gelao, G, Girone, M, Iaselli, Giuseppe, Maggi, G, Maggi, M, Marinelli, N, Natali, S, Nuzzo, S, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Bonvicini, G, Cassel, David G, Cattaneo, M, Comas, P, Coyle, P, Drevermann, H, Engelhardt, A, Forty, Roger W, Frank, M, Hagelberg, R, Harvey, J, Jacobsen, R, Janot, P, Jost, B, Knobloch, J, Lehraus, Ivan, Markou, C, Martin, E B, Mato, P, Mattison, T S, Meinhard, H, Minten, Adolf G, Miquel, R, Moffeit, K, Oest, T, Palazzi, P, Pater, J R, Pusztaszeri, J F, Ranjard, F, Rensing, P E, Rolandi, Luigi, Schlatter, W D, Schmelling, M, Schneider, O, Tejessy, W, Tomalin, I R, Venturi, A, Wachsmuth, H W, Wiedenmann, W, Wildish, T, Witzeling, W, Wotschack, J, Ajaltouni, Ziad J, Bardadin-Otwinowska, Maria, Barrès, A, Boyer, C, Falvard, A, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, J C, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rossignol, J M, Saadi, F, Fearnley, Tom, Hansen, J B, Hansen, J D, Hansen, J R, Hansen, P H, Nilsson, B S, Kyriakis, A, Simopoulou, Errietta, Siotis, I, Vayaki, Anna, Zachariadou, K, Blondel, A, Bonneaud, G R, Brient, J C, Bourdon, P, Passalacqua, L, Rougé, A, Rumpf, M, Tanaka, R, Valassi, Andrea, Verderi, M, Videau, H L, Candlin, D J, Parsons, M I, Focardi, E, Parrini, G, Corden, M, Delfino, M C, Georgiopoulos, C H, Jaffe, D E, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, G P, Pepé-Altarelli, M, Dorris, S J, Halley, A W, ten Have, I, Knowles, I G, Lynch, J G, Morton, W T, O'Shea, V, Raine, C, Reeves, P, Scarr, J M, Smith, K, Smith, M G, Thompson, A S, Thomson, F, Thorn, S, Turnbull, R M, Becker, U, Braun, O, Geweniger, C, Graefe, G, Hanke, P, Hepp, V, Kluge, E E, Putzer, A, Rensch, B, Schmidt, M, Sommer, J, Stenzel, H, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, David M, Cameron, W, Colling, D J, Dornan, Peter J, Konstantinidis, N P, Moneta, L, Moutoussi, A, Nash, J, San Martin, G, Sedgbeer, J K, Stacey, A M, Dissertori, G, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bowdery, C K, Brodbeck, T J, Colrain, P, Crawford, G, Finch, A J, Foster, F, Hughes, G, Sloan, Terence, Whelan, E P, Williams, M I, Galla, A, Greene, A M, Kleinknecht, K, Quast, G, Raab, J, Renk, B, Sander, H G, Wanke, R, Zeitnitz, C, Aubert, Jean-Jacques, Bencheikh, A M, Benchouk, C, Bonissent, A, Bujosa, G, Calvet, D, Carr, J, Diaconu, C A, Etienne, F, Thulasidas, M, Nicod, D, Payre, P, Rousseau, D, Talby, M, Abt, I, Assmann, R W, Bauer, C, Blum, Walter, Brown, D, Dietl, H, Dydak, Friedrich, Ganis, G, Gotzhein, C, Jakobs, K, Kroha, H, Lütjens, G, Lutz, Gerhard, Männer, W, Moser, H G, Richter, R H, Rosado-Schlosser, A, Schwarz, A, Settles, Ronald, Seywerd, H C J, Stierlin, U, Saint-Denis, R, Wolf, G, Alemany, R, Boucrot, J, Callot, O, Cordier, A, Courault, F, Davier, M, Duflot, L, Grivaz, J F, Heusse, P, Jacquet, M, Kim, D W, Le Diberder, F R, Lefrançois, J, Lutz, A M, Musolino, G, Nikolic, I A, Park, H J, Park, I C, Schune, M H, Simion, S, Veillet, J J, Videau, I, Abbaneo, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, M A, Ciulli, V, Dell'Orso, R, Fantechi, R, Ferrante, I, Foà, L, Forti, F, Giassi, A, Giorgi, M A, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, P S, Messineo, A, Rizzo, G, Sanguinetti, G, Sciabà, A, Spagnolo, P, Steinberger, Jack, Tenchini, Roberto, Tonelli, G, Triggiani, G, Vannini, C, Verdini, P G, Walsh, J, Betteridge, A P, Blair, G A, Bryant, L M, Cerutti, F, Gao, Y, Green, M G, Johnson, D L, Medcalf, T, Mir, L M, Perrodo, P, Strong, J A, Bertin, V, Botterill, David R, Clifft, R W, Edgecock, T R, Haywood, S, Edwards, M, Maley, P, Norton, P R, Thompson, J C, Bloch-Devaux, B, Colas, P, Duarte, H, Emery, S, Kozanecki, Witold, Lançon, E, Lemaire, M C, Locci, E, Marx, B, Pérez, P, Rander, J, Renardy, J F, Rosowsky, A, Roussarie, A, Schuller, J P, Schwindling, J, Si Mohand, D, Trabelsi, A, Vallage, B, Johnson, R P, Kim, H Y, Litke, A M, McNeil, M A, Taylor, G, Beddall, A, Booth, C N, Boswell, R, Cartwright, S L, Combley, F, Dawson, I, Köksal, A, Letho, M, Newton, W M, Rankin, C, Thompson, L F, Böhrer, A, Brandt, S, Cowan, G D, Feigl, E, Grupen, Claus, Lutters, G, Minguet-Rodríguez, J A, Rivera, F, Saraiva, P, Smolik, L, Stephan, F, Apollonio, M, Bosisio, L, Della Marina, R, Giannini, G, Gobbo, B, Ragusa, F, Rothberg, J E, Wasserbaech, S R, Armstrong, S R, Bellantoni, L, Elmer, P, Feng, Z, Ferguson, D P S, Gao, Y S, González, S, Grahl, J, Harton, J L, Hayes, O J, Hu, H, McNamara, P A, Nachtman, J M, Orejudos, W, Pan, Y B, Saadi, Y, Schmitt, M, Scott, I J, Sharma, V, Turk, J, Walsh, A M, Wu Sau Lan, Wu, X, Yamartino, J M, Zheng, M, Zobernig, G
Lenguaje:eng
Publicado: 1995
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(95)00823-4
http://cds.cern.ch/record/287512
Descripción
Sumario:A lower limit is set on the B_{s}^{0} meson oscillation parameter \Delta m_{s} using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a reconstructed secondary vertex are used. The high transverse momentum leptons are produced mainly by b hadron decays, and the sign of the lepton indicates the particle/antiparticle final state in decays of neutral B mesons. The initial state is determined by a jet charge technique using both sides of the event. A maximum likelihood method is used to set a lower limit of \, \Delta m_{s}. The 95\% confidence level lower limit on \Delta m_s ranges between 5.2 and 6.5(\hbar/c^{2})~ps^{-1} when the fraction of b quarks from Z^0 decays that form B_{s}^{0} mesons is varied from 8\% to 16\%. Assuming that the B_{s}^{0} fraction is 12\%, the lower limit would be \Delta m_{s} > 6.1(\hbar/c^{2})~ps^{-1} at 95\% confidence level. For x_s = \Delta m_s \, \tau_{B_s}, this limit also gives x_s > 8.8 using the B_{s}^{0} lifetime of \tau_{B_s} = 1.55 \pm 0.11~ps and shifting the central value of \tau_{B_s} down by 1\sigma.

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