Resonant structure and flavour tagging in the Bπ±system using fully reconstructed B decays

6533b7dbfe1ef96bd12701d1

RESEARCH PRODUCT

Resonant structure and flavour tagging in the Bπ±system using fully reconstructed B decays

R. Barate D. Buskulic D. Decamp P. Ghez C. Goy J.-p. Lees A. Lucotte E. Merle M.-n. Minard J.-y. Nief B. Pietrzyk R. Alemany G. Boix M.p. Casado M. Chmeissani J.m. Crespo M. Delfino E. Fernandez M. Fernandez-bosman Ll. Garrido E. Graugès A. Juste M. Martinez G. Merino R. Miquel Ll.m. Mir I.c. Park A. Pascual J.a. Perlas I. Riu F. Sanchez A. Colaleo D. Creanza M. De Palma G. Gelao G. Iaselli G. Maggi M. Maggi 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 U. Becker P. Bright-thomas D. Casper M. Cattaneo V. Ciulli G. Dissertori H. Drevermann R.w. Forty M. Frank R. Hagelberg J.b. Hansen J. Harvey R. Jacobsen P. Janot B. Jost I. Lehraus P. Mato A. Minten L. Moneta A. Pacheco J.-f. Pusztaszeri F. Ranjard L. Rolandi D. Rousseau D. Schlatter M. Schmitt O. Schneider W. Tejessy F. Teubert I.r. Tomalin H. Wachsmuth A. Wagner Z. Ajaltouni F. Badaud G. Chazelle O. Deschamps 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.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 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 F. Cerutti V. Chiarella G. Felici P. Laurelli G. Mannocchi F. Murtas G.p. Murtas L. Passalacqua M. Pepe-altarelli L. Curtis A.w. Halley J.g. Lynch P. Negus V. O'shea C. Raine J.m. Scarr K. Smith P. Teixeira-dias A.s. Thompson E. Thomson O. Buchmüller S. Dhamotharan C. Geweniger G. Graefe P. Hanke G. Hansper V. Hepp E.e. Kluge A. Putzer 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 N. Marinelli A. Moutoussi J. Nash J.k. Sedgbeer P. Spagnolo M.d. Williams V.m. Ghete P. Girtler E. Kneringer D. Kuhn G. Rudolph A.p. Betteridge C.k. Bowdery P.g. Buck P. Colrain G. Crawford A.j. Finch F. Foster G. Hughes R.w.l. Jones M.i. Williams 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 F. Etienne O. Leroy F. Motsch P. Payre M. Talby A. Sadouki M. Thulasidas K. Trabelsi M. Aleppo M. Antonelli F. Ragusa R. Berlich W. Blum V. Büscher H. Dietl G. Ganis H. Kroha G. Lütjens C. Mannert W. Männer H.-g. Moser S. Schael R. Settles H. Seywerd H. Stenzel W. Wiedenmann G. Wolf J. Boucrot O. Callot S. Chen A. Cordier M. Davier L. Duflot J.-f. Grivaz Ph. Heusse A. Höcker A. Jacholkowska D.w. Kim F. Le Diberder J. Lefrançois A.-m. Lutz M.-h. Schune E. Tournefier J.-j. Veillet I. Videau D. Zerwas P. Azzurri G. Bagliesi G. Batignani S. Bettarini T. Boccali C. Bozzi G. Calderini M. Carpinelli M.a. Ciocci 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. Rizzo G. Sanguinetti A. Sciabà R. Tenchini G. Tonelli C. Vannini A. Venturi P.g. Verdini G.a. Blair L.m. Bryant J.t. Chambers 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.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 N. Konstantinidis A.m. Litke M.a. Mcneil G. Taylor C.n. Booth C.a.j. Brew S. Cartwright F. Combley M.s. Kelly M. Lehto J. Reeve L.f. Thompson K. Affholderbach 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. Gao S. González T.c. Greening O.j. Hayes H. Hu S. Jin P.a. Mcnamara Iii J.m. Nachtman J. Nielsen W. Orejudos Y.b. Pan Y. Saadi I.j. Scott J. Walsh Sau Lan Wu X. Wu G. Zobernig

subject

Physics Quark Nuclear and High Energy Physics Particle physics High Energy Physics::Phenomenology Hadron Flavour Structure (category theory)State (functional analysis)ALEPH detector Nuclear physics ALEPH Experiment Mass spectrum CP violation B meson High Energy Physics::Experiment Nuclear Experiment Particle Physics - Experiment

description

Abstract Starting from a sample of four million hadronic Z decays collected with the ALEPH detector at LEP, 404 charged and neutral B mesons are fully reconstructed and used to look for resonant structure in the Bπ system. An excess of events is observed above the expected background in the Bπ mass spectrum at a mass ≈5.7 GeV/c 2 , consistent with the production and decay to B (∗) π of the B ∗∗ states predicted by Heavy Quark Symmetry (HQS). In the framework of HQS, it is found that the mass of the B 2 ∗ state is (5739 + 8 −11 ( stat ) +6 −4 ( syst )) MeV/c 2 and the relative production rate of the B ∗∗ system is BR(b→B ∗∗ →B (∗) π)/BR(b→B u,d )=(31±9 (stat) +6 −5 (syst)) % . In the same sample of B mesons, significant Bπ ± charge-flavour correlations are observed, which may prove important for tagging the initial B state in future CP violation studies.

year	journal	country	edition	language
1998-01-01

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