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Measurement of sin 2/3 with hadronic and previously unused muonic J/ψ decays

  • BABAR Collaboration
  • Laboratoire de Physique des Particules
  • Università degli studi di Bari Aldo Moro
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • University of Bergen
  • Ernest Orlando Lawrence Berkeley National Laboratory
  • 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
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Technical University Dresden
  • University of Edinburgh
  • University of Ferrara
  • Florida A and M University
  • LNF-INFN
  • University of Perugia
  • University of Genoa
  • Harvard University
  • Imperial College London
  • University of Iowa
  • Iowa State University
  • INFN Sezione di Perugia
  • 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
  • Science Park 105
  • University of Naples Federico II
  • Università degli Studi della Basilicata
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  • Oak Ridge National Laboratory
  • The Ohio State University
  • University of Oregon
  • University of Padova
  • Sorbonne Université
  • University of Pavia
  • University of Pennsylvania
  • University of Pisa
  • Prairie View A and M University
  • Princeton University
  • Dipartimento di Fisica
  • Universität Rostock
  • CCLRC Rutherford Appleton Laboratory
  • 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
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  • University of Trieste
  • Vanderbilt University
  • University of Victoria
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  • Yale University

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We report a measurement of the CP-violation parameter sin 2β with B0J/ψKS 0 decays in which the J/ψ decays to hadrons or to muons that do not satisfy our standard identification criteria. With a sample of 88 million BB̄ events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, we reconstruct 100±17 such events, with J/ψ→π-π -π0 being the most prevalent, and measure sin2β=1.56± 0.42(stat)±0.21(syst).

langue originaleAnglais
Numéro d'article052001
journalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume69
Numéro de publication5
Les DOIs
étatPublié - 1 janv. 2004

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