Observation of charmless hadronic B decays

6533b852fe1ef96bd12ab6f9

RESEARCH PRODUCT

Observation of charmless hadronic B decays

D. Buskulic I. De Bonis D. Decamp P. Ghez C. Goy J.-p. Lees A. Lucotte M.-n. Minard J.-y. Nief P. Odier B. Pietrzyk M.p. Casado M. Chmeissani J.m. Crespo M. Delfino I. Efthymiopoulos E. Fernandez M. Fernandez-bosman Ll. Garrido A. Juste M. Martinez 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 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 R. Xu S. Xue J. Zhang L. Zhang W. Zhao R. Alemany A.o. Bazarko G. Bonvicini P. Bright-thomas M. Cattaneo P. Comas P. Coyle H. Drevermann R.w. Forty M. Frank R. Hagelberg J. Harvey P. Janot B. Jost E. Kneringer J. Knobloch I. Lehraus G. Lutters E.b. Martin P. Mato A. Minten R. Miquel Ll.m. Mir L. Moneta T. Oest A. Pacheco J.-f. Pusztaszeri F. Ranjard P. Rensing G. Rizzo L. Rolandi D. Schlatter M. Schmelling M. Schmitt O. Schneider W. Tejessy I.r. Tomalin A. Venturi H. Wachsmuth A. Wagner Z. Ajaltouni A. Barrès C. Boyer A. Falvard 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 A. Kyriakis C. Markou E. Simopoulou I. Siotis A. Vayaki K. Zachariadou 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 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 P. Reeves J.m. Scarr K. Smith P. Teixeira-dias A.s. Thompson F. Thomson S. Thorn R.m. Turnbull U. Becker C. Geweniger G. Graefe P. Hanke G. Hansper V. Hepp E.e. Kluge A. Putzer M. Schmidt J. Sommer H. Stenzel K. Tittel S. Werner M. Wunsch D. Abbaneo R. Beuselinck D.m. Binnie W. Cameron P.j. Dornan 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 K. Jakobs K. Kleinknecht G. Quast B. Renk E. Rohne H.-g. Sander P. Van Gemmeren C. Zeitnitz J.j. Aubert A.m. Bencheikh C. Benchouk A. Bonissent G. Bujosa D. Calvet J. Carr C. Diaconu F. Etienne N. Konstantinidis P. Payre D. Rousseau M. Talby A. Sadouki M. Thulasidas K. Trabelsi M. Aleppo F. Ragusa C. Bauer 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 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 H.j. Park M.-h. Schune S. Simion 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 P.g. Verdini J. Walsh G.a. Blair L.m. Bryant F. Cerutti 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 B. Marx 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 A. Koksal M. Letho W.m. Newton J. Reeve L.f. Thompson A. Böhrer S. Brandt G. Cowan C. Grupen J. Minguet-rodriguez F. Rivera 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 P. Elmer Z. Feng D.p.s. Ferguson Y.s. Gao S. González J. Grahl T.c. Greening O.j. Hayes H. Hu P.a. Mcnamara J.m. Nachtman W. Orejudos Y.b. Pan Y. Saadi I.j. Scott A.m. Walsh Sau Lan Wu X. Wu J.m. Yamartino M. Zheng G. Zobernig

subject

Physics Nuclear and High Energy Physics Particle physics [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]010308 nuclear & particles physics Branching fraction Physics Hadron Nuclear Theory 01 natural sciences ALEPH Experiment Pion 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment Atomic physics 010306 general physics Nuclear Experiment Particle Physics - Experiment

description

Four candidates for charmless hadronic B decay are observed in a data sample of four million hadronic Z decays recorded by the ALEPH detector at LEP. The probability that these events come from background sources is estimated to be less than 10(-6). The average branching of weakly decaying B hadrons (a mixture of B-d(0), B-s(0) and Lambda(b) weighted by their production The average branching ratio of weakly decaying B hadrons (a mixture of B-d(0) cross sections and lifetimes, here denoted B) into two long-lived charged hadrons (pions, kaons or protons) is measured to be Br(B-->h(+)h(-))=(1.7(-0.7)(+1.0)+/-0.2)x10(-5). The relative branching fraction Br(B-d(s)(0)-->pi(+)pi(-)(K-))/Br(B-d(s)(0)-->h(+)h(-)) is measured to be 1.0(-0.3-0.1)(+0.0+0.0). In addition, branching ratio upper limits are obtained for a variety of exclusive charmless hadronic two-body decays of B hadrons. 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
1996-01-01

10.1016/0370-2693(96)00929-x http://cds.cern.ch/record/308013