Search for the Bc meson in hadronic Z decays

6533b7d1fe1ef96bd125d988

RESEARCH PRODUCT

Search for the Bc meson in hadronic Z decays

R. Barate D. Buskulic D. Decamp P. Ghez C. Goy J.-p. Lees A. Lucotte M.-n. Minard J.-y. Nief B. Pietrzyk M.p. Casado M. Chmeissani P. Comas J.m. Crespo M. Delfino E. Fernandez M. Fernandez-bosman Ll. Garrido A. Juste M. Martinez R. Miquel Ll.m. Mir S. Orteu C. Padilla I.c. Park A. Pascual J.a. Perlas I. Riu F. Sanchez F. Teubert A. Colaleo D. Creanza M. De Palma G. Gelao G. Iaselli G. Maggi M. Maggi N. Marinelli S. Nuzzo A. Ranieri G. Raso F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta A. Tricomi G. Zito X. Huang J. Lin Q. Ouyang T. Wang Y. Xie R. Xu S. Xue J. Zhang L. Zhang W. Zhao D. Abbaneo R. Alemany U. Becker A.o. Bazarko P. Bright-thomas M. Cattaneo F. Cerutti H. Drevermann R.w. Forty M. Frank R. Hagelberg J. Harvey P. Janot B. Jost E. Kneringer J. Knobloch I. Lehraus G. Lutters P. Mato A. Minten L. Moneta A. Pacheco J.-f. Pusztaszeri F. Ranjard P. Rensing G. Rizzo L. Rolandi D. Schlatter M. Schmitt O. Schneider W. Tejessy I.r. Tomalin H. Wachsmuth A. Wagner Z. Ajaltouni A. Barrẽs C. Boyer A. Falvard C. Ferdi P. Gay C. Guicheney P. Henrard J. Jousset B. Michel S. Monteil J-c. Montret D. Pallin P. Perret F. Podlyski J. Proriol P. Rosnet J.-m. Rossignol T. Fearnley J.b. Hansen J.d. Hansen J.r. Hansen P.h. Hansen B.s. Nilsson B. Rensch A. Wäänänen G. Daskalakis A. Kyriakis C. Markou E. Simopoulou I. Siotis A. Vayaki A. Blondel G. Bonneaud J.c. Brient P. Bourdon A. Rougé M. Rumpf A. Valassi M. Verderi H. Videau D.j. Candlin M.i. Parsons E. Focardi G. Parrini K. Zachariadou M. Corden C. Georgiopoulos D.e. Jaffe A. Antonelli G. Bencivenni G. Bologna F. Bossi P. Campana G. Capon D. Casper V. Chiarella G. Felici P. Laurelli G. Mannocchi F. Murtas G.p. Murtas L. Passalacqua M. Pepe-altarelli L. Curtis S.j. Dorris A.w. Halley I.g. Knowles J.g. Lynch V. O'shea C. Raine J.m. Scarr K. Smith P. Teixeira-dias A.s. Thompson E. Thomson F. Thomson R.m. Turnbull C. Geweniger G. Graefe P. Hanke G. Hansper V. Hepp E.e. Kluge A. Putzer M. Schmidt J. Sommer K. Tittel S. Werner M. Wunsch R. Beuselinck D.m. Binnie W. Cameron P.j. Dornan M. Girone S. Goodsir E.b. Martin A. Moutoussi J. Nash J.k. Sedgbeer A.m. Stacey M.d. Williams G. Dissertori P. Girtler D. Kuhn G. Rudolph A.p. Betteridge C.k. Bowdery P. Colrain G. Crawford A.j. Finch F. Foster G. Hughes T. Sloan M.i. Williams A. Galla I. Giehl A.m. Greene C. Hoffmann K. Jakobs K. Kleinknecht G. Quast B. Renk E. Rohne H.-g. Sander P. Van Gemmeren C. Zeitnitz J.j. Aubert C. Benchouk A. Bonissent G. Bujosa D. Calvet J. Carr P. Coyle C. Diaconu F. Etienne N. Konstantinidis O. Leroy F. Motsch P. Payre D. Rousseau M. Talby A. Sadouki M. Thulasidas K. Trabelsi M. Aleppo F. Ragusa R. Berlich W. Blum V. Büscher H. Dietl F. Dydak G. Ganis C. Gotzhein H. Kroha G. Lütjens G. Lutz W. Männer H.-g. Moser R. Richter A. Rosado-schlosser S. Schael R. Settles H. Seywerd R.st. Denis H. Stenzel W. Wiedenmann G. Wolf J. Boucrot O. Callot S. Chen Y. Choi A. Cordier M. Davier L. Duflot J.-f. Grivaz Ph. Heusse A. Höcker A. Jacholkowska M. Jacquet D.w. Kim F. Le Diberder J. Lefrançois A.-m. Lutz I. Nikolic M.-h. Schune S. Simion E. Tournefier J.-j. Veillet I. Videau D. Zerwas P. Azzurri G. Bagliesi G. Batignani S. Bettarini C. Bozzi G. Calderini M. Carpinelli M.a. Ciocci V. Ciulli R. Dell'orso R. Fantechi I. Ferrante L. Foà F. Forti A. Giassi M.a. Giorgi A. Gregorio F. Ligabue A. Lusiani P.s. Marrocchesi A. Messineo F. Palla G. Sanguinetti A. Sciabà P. Spagnolo J. Steinberger R. Tenchini G. Tonelli C. Vannini A. Venturi P.g. Verdini G.a. Blair L.m. Bryant J.t. Chambers Y. Gao M.g. Green T. Medcalf P. Perrodo J.a. Strong J.h. Von Wimmersperg-toeller D.r. Botterill R.w. Clifft T.r. Edgecock S. Haywood P. Maley P.r. Norton J.c. Thompson A.e. Wright B. Bloch-devaux P. Colas S. Emery W. Kozanecki E. Lançon M.c. Lemaire E. Locci P. Perez J. Rander J.-f. Renardy A. Roussarie J.-p. Schuller J. Schwindling A. Trabelsi B. Vallage S.n. Black J.h. Dann R.p. Johnson H.y. Kim A.m. Litke M.a. Mcneil G. Taylor C.n. Booth R. Boswell C.a.j. Brew S. Cartwright F. Combley M.s. Kelly M. Lehto W.m. Newton J. Reeve L.f. Thompson A. Böhrer S. Brandt G. Cowan C. Grupen P. Saraiva L. Smolik F. Stephan M. Apollonio L. Bosisio R. Della Marina G. Giannini B. Gobbo G. Musolino J. Rothberg S. Wasserbaech S.r. Armstrong E. Charles P. Elmer D.p.s. Ferguson Y.s. Gao S. González T.c. Greening O.j. Hayes H. Hu S. Jin P.a. Mcnamara J.m. Nachtman J. Nielsen W. Orejudos Y.b. Pan Y. Saadi I.j. Scott J. Walsh Sau Lan Wu X. Wu J.m. Yamartino G. Zobernig

subject

Physics Nuclear and High Energy Physics Aleph Particle physics Meson [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]010308 nuclear & particles physics Physics Hadron 01 natural sciences Nuclear physics ALEPH Experiment 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physics ALEPH experiment Particle Physics - Experiment

description

A search for the B-c meson decaying into the channels J/psi pi(+) and J/psi l(+)nu(l) (l = e or mu) is performed in a sample of 3.9 million hadronic Z decays collected by the ALEPH detector. This search results in the observation of 0 and 2 candidates in each of these channels, respectively, while 0.44 and 0.81 background events are expected. The following 90% confidence level upper limits are derived: Br(Z --> BcX)/Br(Z --> q (q) over bar BR(B-c(+) --> J/psi pi(+)) BcX)/Br(Z-->q (q) over bar)Br(B-c(+) --> J/psi l(+)nu) J/psi(e(+)e(-))mu(+)nu(mu) candidate with very low background probability, found in an independent analysis, is also described in detail. (C) 1997 Published by Elsevier Science B.V. RI ANTONELLI, ANTONELLA/C-6238-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Sanchez, Federico/F-5809-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012

year	journal	country	edition	language
1997-01-01

10.1016/s0370-2693(97)00461-9 https://hdl.handle.net/11368/2563022