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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
  • , L. Garrido
  • E. Graugès, A. Juste, M. Martinez, G. Merino, R. Miquel, L. 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. Rougè, 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. Buscher, H. Dietl, G. Ganis, H. Kroha, G. Lütjens, C. Mannert, W. Manner, 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, P. 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. Lançn, 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. Gonzalez, 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, S. L. Wu, X. Wu, G. Zobernig
  • Université Paris-Sud
  • University of São Paulo
  • University of Barcelona
  • INFN Sezione di Bari
  • Dipartimento di Fisica
  • INFN Sezione di Catania
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • European Organization for Nuclear Research
  • Ernest Orlando Lawrence Berkeley National Laboratory
  • University of Geneva
  • Cornell University College of Engineering
  • Harvard University
  • Schweizerischer Bankverein
  • Université Blaise Pascal
  • Niels Bohr Institutet
  • NCSR Demokritos
  • University of Florence
  • Supercomputer Computations Research Institute
  • Florida State University
  • LNF-INFN
  • University of Turin
  • Ev-K2-CNR Committee
  • Department of Physics and Astronomy
  • University of Glasgow
  • Institut für Hochenergiephysik
  • University of Heidelberg
  • Department of Physics
  • Imperial College London
  • University of Innsbruck
  • Lancaster University
  • Institut für Physik
  • Johannes Gutenberg University
  • Dipartimento di Fisica
  • Sezione INFN di Milano
  • Max-Planck-Institut für Physik
  • Laboratoire de l'Accélérateur Linéaire
  • Kangwon National University
  • Dipartimento di Fisica dell'Università
  • Scuola Normale Superiore di Pisa
  • Istituto di Matematica e Fisica
  • Dipartimento di Scienze Biomediche
  • Department of Physics
  • Royal Holloway University of London
  • Rutherford Appleton Laboratory
  • CEA/UVSQ/CNRS
  • University of California at Santa Cruz
  • Department of Physics
  • The University of Sheffield
  • Fachbereich Physik
  • Universität Siegen
  • Dipartimento di Fisica
  • University of Trieste
  • Experimental Elementary Particle Physics
  • University of Washington
  • University of Wisconsin-Madison
  • University of California, Los Angeles

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

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/c2, 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/c2 and the relative production rate of the B** system is BR(b → B** → B(*)π)/BR(b → Bu,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.

Original languageEnglish
Pages (from-to)215-226
Number of pages12
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume425
Issue number1-2
DOIs
Publication statusPublished - 16 Apr 1998

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