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First Observation of CP Violation in B[over ¯]
Abdesselam, A; Adachi, I; Adametz, A; Adye, T; Ahmed, H; Aihara, H; Akar, S; Alam, M S; Albert, J; Al Said, S; Andreassen, R; Angelini, C; Anulli, F; Arinstein, K; Arnaud, N; Asner, D M; Aston, D; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; Badhrees, I; Bahinipati, S; Bakich, A M; Band, H R; Banerjee, Sw; Barberio, E; Bard, D J; Barlow, R J; Batignani, G; Beaulieu, A; Bellis, M; Ben-Haim, E; Bernard, D; Bernlochner, F U; Bettarini, S; Bettoni, D; Bevan, A J; Bhardwaj, V; Bhuyan, B; Bianchi, F; Biasini, M; Biswal, J; Blinov, V E; Bloom, P C; Bobrov, A; Bomben, M; Bondar, A; Bonneaud, G R; Bonvicini, G.
Afiliación
  • Abdesselam A; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451, Kingdom of Saudi Arabia.
  • Adachi I; SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan.
  • Adametz A; High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan.
  • Adye T; Universität Heidelberg, Physikalisches Institut, D-69120 Heidelberg, Germany.
  • Ahmed H; Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom.
  • Aihara H; Physics Department, Jazan University, Jazan 22822, Kingdom of Saudi Arabia.
  • Akar S; Department of Physics, University of Tokyo, Tokyo 113-0033, Japan.
  • Alam MS; Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, Université Pierre et Marie Curie-Paris6, Université Denis Diderot-Paris7, F-75252 Paris, France.
  • Albert J; State University of New York, Albany, New York 12222, USA.
  • Al Said S; University of Victoria, Victoria, British Columbia V8W 3P6, Canada.
  • Andreassen R; Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia.
  • Angelini C; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451, Kingdom of Saudi Arabia.
  • Anulli F; University of Cincinnati, Cincinnati, Ohio 45221, USA.
  • Arinstein K; INFN Sezione di Pisa, I-56127 Pisa, Italy.
  • Arnaud N; Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.
  • Asner DM; INFN Sezione di Roma, I-00185 Roma, Italy.
  • Aston D; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation.
  • Aulchenko V; Novosibirsk State University, Novosibirsk 630090, Russian Federation.
  • Aushev T; Laboratoire de l'Accélérateur Linéaire, IN2P3/CNRS et Université Paris-Sud 11, Centre Scientifique d'Orsay, F-91898 Orsay Cedex, France.
  • Ayad R; Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
  • Babu V; SLAC National Accelerator Laboratory, Stanford, California 94309, USA.
  • Badhrees I; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russian Federation.
  • Bahinipati S; Novosibirsk State University, Novosibirsk 630090, Russian Federation.
  • Bakich AM; Institute for Theoretical and Experimental Physics, Moscow 117218, Russian Federation.
  • Band HR; Moscow Institute of Physics and Technology, Moscow Region 141700, Russian Federation.
  • Banerjee S; Colorado State University, Fort Collins, Colorado 80523, USA.
  • Barberio E; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451, Kingdom of Saudi Arabia.
  • Bard DJ; Tata Institute of Fundamental Research, Mumbai 400005, India.
  • Barlow RJ; King Abdulaziz City for Science and Technology, Riyadh 11442, Kingdom of Saudi Arabia.
  • Batignani G; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451, Kingdom of Saudi Arabia.
  • Beaulieu A; Indian Institute of Technology Bhubaneswar, Satya Nagar 751007, India.
  • Bellis M; School of Physics, University of Sydney, Sydney, NSW 2006, Australia.
  • Ben-Haim E; University of Wisconsin, Madison, Wisconsin 53706, USA.
  • Bernard D; University of Victoria, Victoria, British Columbia V8W 3P6, Canada.
  • Bernlochner FU; School of Physics, University of Melbourne, Victoria 3010, Australia.
  • Bettarini S; SLAC National Accelerator Laboratory, Stanford, California 94309, USA.
  • Bettoni D; University of Manchester, Manchester M13 9PL, United Kingdom.
  • Bevan AJ; INFN Sezione di Pisa, I-56127 Pisa, Italy.
  • Bhardwaj V; Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.
  • Bhuyan B; University of Victoria, Victoria, British Columbia V8W 3P6, Canada.
  • Bianchi F; Stanford University, Stanford, California 94305-4060, USA.
  • Biasini M; Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, Université Pierre et Marie Curie-Paris6, Université Denis Diderot-Paris7, F-75252 Paris, France.
  • Biswal J; Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau, France.
  • Blinov VE; University of Victoria, Victoria, British Columbia V8W 3P6, Canada.
  • Bloom PC; INFN Sezione di Pisa, I-56127 Pisa, Italy.
  • Bobrov A; Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.
  • Bomben M; INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  • Bondar A; Queen Mary, University of London, London E1 4NS, United Kingdom.
  • Bonneaud GR; University of South Carolina, Columbia, South Carolina 29208, USA.
  • Bonvicini G; Indian Institute of Technology Guwahati, Guwahati, Assam 781 039, India.
Phys Rev Lett ; 115(12): 121604, 2015 Sep 18.
Article en En | MEDLINE | ID: mdl-26430984
We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{f}S=+0.66±0.10(stat)±0.06(syst) and C=-0.02±0.07(stat)±0.03(syst). These results correspond to the first observation of CP violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2015 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2015 Tipo del documento: Article Pais de publicación: Estados Unidos