Passer à la navigation principale Passer à la recherche Passer au contenu principal

Branching fractions and CP asymmetries in B0â†'Ï€ 0Ï€0, B+â†'Ï€+Ï€0, and B+â†'K+Ï€0 decays and isospin analysis of the Bâ†'ππ system

  • B. Aubert
  • , R. Barate
  • , D. Boutigny
  • , F. Couderc
  • , Y. Karyotakis
  • , J. P. Lees
  • , V. Poireau
  • , V. Tisserand
  • , A. Zghiche
  • , E. Grauges-Pous
  • , A. Palano
  • , A. Pompili
  • , J. C. Chen
  • , N. D. Qi
  • , G. Rong
  • , P. Wang
  • , Y. S. Zhu
  • , G. Eigen
  • , I. Ofte
  • , B. Stugu
    • G. S. Abrams, A. W. Borgland, A. B. Breon, D. N. Brown, J. Button-Shafer, R. N. Cahn, E. Charles, C. T. Day, M. S. Gill, A. V. Gritsan, Y. Groysman, R. G. Jacobsen, R. W. Kadel, J. Kadyk, L. T. Kerth, Yu G. Kolomensky, G. Kukartsev, G. Lynch, L. M. Mir, P. J. Oddone, T. J. Orimoto, M. Pripstein, N. A. Roe, M. T. Ronan, W. A. Wenzel, M. Barrett, K. E. Ford, T. J. Harrison, A. J. Hart, C. M. Hawkes, S. E. Morgan, A. T. Watson, M. Fritsch, K. Goetzen, T. Held, H. Koch, B. Lewandowski, M. Pelizaeus, T. Schroeder, M. Steinke, J. T. Boyd, N. Chevalier, W. N. Cottingham, M. P. Kelly, T. E. Latham, F. F. Wilson, T. Cuhadar-Donszelmann, C. Hearty, N. S. Knecht, T. S. Mattison, J. A. McKenna, D. Thiessen, A. Khan, P. Kyberd, L. Teodorescu, A. E. Blinov, V. E. Blinov, V. P. Druzhinin, V. B. Golubev, V. N. Ivanchenko, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu I. Skovpen, E. P. Solodov, A. N. Yushkov, D. Best, M. Bruinsma, M. Chao, I. Eschrich, D. Kirkby, A. J. Lankford, M. Mandelkern, R. K. Mommsen, W. Roethel, D. P. Stoker, C. Buchanan, B. L. Hartfiel, A. J.R. Weinstein
  • Laboratoire de Physique des Particules
  • University of São Paulo
  • Università degli studi di Bari Aldo Moro
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • University of Bergen
  • University of California, Berkeley
  • University of Birmingham
  • Ruhr-University Bochum
  • University of Bristol
  • University of British Columbia
  • Brunel University London
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Long Beach VA and University of California
  • University of California, Los Angeles
  • University of California, Riverside
  • University of California, San Diego
  • University of California, Santa Barbara
  • University of California at Santa Cruz
  • California Institute of Technology
  • University of Cincinnati
  • University of Colorado Boulder
  • Cooperative Institute for Research in the Atmosphere
  • University of Dortmund
  • Technical University Dresden
  • Ip Paris
  • University of Edinburgh
  • University of Ferrara
  • LNF-INFN
  • University of Genoa
  • Harvard University
  • University of Heidelberg
  • Imperial College London
  • University of Iowa
  • Iowa State University
  • Laboratoire de l'Accélérateur Linéaire
  • Lawrence Livermore National Laboratory
  • University of Liverpool
  • Queen Mary University of London
  • Royal Holloway University of London
  • University of Louisville
  • University of Manchester
  • University of Maryland, College Park
  • UMass Amherst
  • Massachusetts Institute of Technology
  • McGill University
  • University of Milano
  • University of Mississippi
  • Universite de Montreal
  • Mount Holyoke College
  • University of Naples Federico II
  • Science Park 105
  • University of Notre Dame
  • The Ohio State University
  • University of Oregon
  • University of Padova
  • Universités Paris VI and VII
  • University of Pennsylvania
  • University of Perugia
  • University of Pisa
  • Prairie View A and M University
  • Princeton University
  • Dipartimento di Fisica
  • Universität Rostock
  • CCLRC Rutherford Appleton Laboratory
  • Institut Pierre Simon Laplace, CNRS and CEA
  • University of South Carolina
  • Stanford Linear Accelerator Center
  • Stanford University
  • State University of New York Albany
  • University of Tennessee
  • The University of Texas at Austin
  • University of Texas
  • University of Turin
  • University of Trieste
  • University of Valencia
  • Vanderbilt University
  • University of Victoria
  • University of Warwick
  • University of Wisconsin-Madison
  • Yale University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Based on a sample of 227Ã-106 BB pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, we measure the branching fraction B(B0â†'Ï€0Ï€0)=(1. 17±0.32±0.10)Ã-10-6, and the asymmetry CÏ€0Ï€0=-0.12±0.56±0.06. The B0â†'Ï€0Ï€0 signal has a significance of 5.0Ï. We also measure B(B+â†'Ï€+Ï€0)=(5. 8±0.6±0.4)Ã-10-6, B(B+â†'K+Ï €0)=(12.0±0.7±0.6)Ã-10-6, and the charge asymmetries AÏ€+Ï€0=-0.01±0. 10±0.02 and AK+Ï€0=0.06±0. 06±0.01. Using isospin relations, we find an upper bound on the angle difference |α-αeff| of 35° at the 90% C.L.

langue originaleAnglais
Numéro d'article181802
journalPhysical Review Letters
Volume94
Numéro de publication18
Les DOIs
étatPublié - 13 mai 2005
Modification externeOui

Accès au document

Autres fichiers et liens

Empreinte digitale

Examiner les sujets de recherche de « Branching fractions and CP asymmetries in B0â†'Ï€ 0Ï€0, B+â†'Ï€+Ï€0, and B+â†'K+Ï€0 decays and isospin analysis of the Bâ†'ππ system ». Ensemble, ils forment une empreinte digitale unique.
Afficher l'empreinte digitale dans sa totalité

Contient cette citation