Measurement of the CP Asymmetry in B_{s}^{0}-B[over ¯]_{s}^{0} Mixing
Affiliations
- 1 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 2 Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
- 3 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 4 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 5 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 6 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 7 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 8 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 9 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 10 Imperial College London, London, United Kingdom.
- 11 University of Cincinnati, Cincinnati, Ohio, United States.
- 12 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 13 Sezione INFN di Padova, Padova, Italy.
- 14 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
- 15 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 16 Sezione INFN di Firenze, Firenze, Italy.
- 17 Sezione INFN di Ferrara, Ferrara, Italy.
- 18 University of Maryland, College Park, Maryland, United States.
- 19 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 20 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 21 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 22 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 23 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 24 Syracuse University, Syracuse, New York, United States.
- 25 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 26 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 27 Universitat de Barcelona, Barcelona, Spain.
- 28 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 29 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 30 LAPP, Université Savoie Mont-Blanc, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 31 Sezione INFN di Pisa, Pisa, Italy.
- 32 Sezione INFN di Milano Bicocca, Milano, Italy.
- 33 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 34 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 35 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 36 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 37 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 38 University of Birmingham, Birmingham, United Kingdom.
- 39 Massachusetts Institute of Technology, Cambridge, Massachusetts, United States.
- 40 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
- 41 Sezione INFN di Cagliari, Cagliari, Italy.
- 42 Yandex School of Data Analysis, Moscow, Russia associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 43 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 44 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 45 Sezione INFN di Bologna, Bologna, Italy.
- 46 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 47 Sezione INFN di Genova, Genova, Italy.
- 48 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 49 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 50 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 51 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 52 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 53 Sezione INFN di Milano, Milano, Italy.
- 54 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 55 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 56 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 57 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 58 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 59 Institut für Physik, Universität Rostock, Rostock, Germany associated with Physikalisches Institut, Ruprecht-Karls-Universitat Heidelberg, Heidelberg, Germany.
- 60 University of Chinese Academy of Sciences, Beijing, China associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 61 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 62 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 63 National Research Centre Kurchatov Institute, Moscow, Russia associated with Institute of Theoretical and Experimental Physics 15 (ITEP), Moscow, Russia.
- 64 Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain associated with Universitat de Barcelona, Barcelona, Spain.
- 65 School of Physics, University College Dublin, Dublin, Ireland.
- 66 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia associated with LPNHE, Universite Pierre et Marie Curie, Universite Paris Diderot, CNRS/IN2P3, Paris, France.
- 67 Van Swinderen Institute, University of Groningen, Groningen, The Netherlands associated with Nikhef National Institute for Subatomic Q7 Physics, Amsterdam, The Netherlands.
- 68 Sezione INFN di Bari, Bari, Italy.
- 69 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- PMID: 27541460
- DOI: 10.1103/PhysRevLett.117.061803
Measurement of the CP Asymmetry in B_{s}^{0}-B[over ¯]_{s}^{0} Mixing
Authors
Affiliations
- 1 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 2 Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
- 3 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 4 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 5 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 6 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 7 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 8 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 9 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 10 Imperial College London, London, United Kingdom.
- 11 University of Cincinnati, Cincinnati, Ohio, United States.
- 12 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 13 Sezione INFN di Padova, Padova, Italy.
- 14 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
- 15 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 16 Sezione INFN di Firenze, Firenze, Italy.
- 17 Sezione INFN di Ferrara, Ferrara, Italy.
- 18 University of Maryland, College Park, Maryland, United States.
- 19 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 20 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 21 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 22 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 23 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 24 Syracuse University, Syracuse, New York, United States.
- 25 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 26 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 27 Universitat de Barcelona, Barcelona, Spain.
- 28 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 29 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 30 LAPP, Université Savoie Mont-Blanc, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 31 Sezione INFN di Pisa, Pisa, Italy.
- 32 Sezione INFN di Milano Bicocca, Milano, Italy.
- 33 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 34 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 35 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 36 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 37 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 38 University of Birmingham, Birmingham, United Kingdom.
- 39 Massachusetts Institute of Technology, Cambridge, Massachusetts, United States.
- 40 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
- 41 Sezione INFN di Cagliari, Cagliari, Italy.
- 42 Yandex School of Data Analysis, Moscow, Russia associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 43 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 44 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 45 Sezione INFN di Bologna, Bologna, Italy.
- 46 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 47 Sezione INFN di Genova, Genova, Italy.
- 48 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 49 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 50 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 51 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 52 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 53 Sezione INFN di Milano, Milano, Italy.
- 54 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 55 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 56 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 57 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 58 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 59 Institut für Physik, Universität Rostock, Rostock, Germany associated with Physikalisches Institut, Ruprecht-Karls-Universitat Heidelberg, Heidelberg, Germany.
- 60 University of Chinese Academy of Sciences, Beijing, China associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 61 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 62 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 63 National Research Centre Kurchatov Institute, Moscow, Russia associated with Institute of Theoretical and Experimental Physics 15 (ITEP), Moscow, Russia.
- 64 Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain associated with Universitat de Barcelona, Barcelona, Spain.
- 65 School of Physics, University College Dublin, Dublin, Ireland.
- 66 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia associated with LPNHE, Universite Pierre et Marie Curie, Universite Paris Diderot, CNRS/IN2P3, Paris, France.
- 67 Van Swinderen Institute, University of Groningen, Groningen, The Netherlands associated with Nikhef National Institute for Subatomic Q7 Physics, Amsterdam, The Netherlands.
- 68 Sezione INFN di Bari, Bari, Italy.
- 69 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- PMID: 27541460
- DOI: 10.1103/PhysRevLett.117.061803
Erratum in
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Publisher's Note: Measurement of the CP Asymmetry in B_{s}^{0}-B[over ¯]_{s}^{0} Mixing [Phys. Rev. Lett. 117, 061803 (2016)].Aaij R, Anonymous; LHCb Collaboration. Aaij R, et al. Phys Rev Lett. 2017 Mar 24;118(12):129903. doi: 10.1103/PhysRevLett.118.129903. Epub 2017 Mar 23. Phys Rev Lett. 2017. PMID: 28388175
Abstract
The CP asymmetry in the mixing of B_{s}^{0} and B[over ¯]_{s}^{0} mesons is measured in proton-proton collision data corresponding to an integrated luminosity of 3.0 fb^{-1}, recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV. Semileptonic B_{s}^{0} and B[over ¯]_{s}^{0} decays are studied in the inclusive mode D_{s}^{∓}μ^{±}ν[over (-)]_{μ}X with the D_{s}^{∓} mesons reconstructed in the K^{+}K^{-}π^{∓} final state. Correcting the observed charge asymmetry for detection and background effects, the CP asymmetry is found to be a_{sl}^{s}=(0.39±0.26±0.20)%, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of a_{sl}^{s} to date. It is consistent with the prediction from the standard model and will constrain new models of particle physics.
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