Measurement of the semileptonic CP asymmetry in B0-B[over ¯]0 mixing
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 2 Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
- 3 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 4 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 5 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 6 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 7 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 8 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 9 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 10 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 11 Sezione INFN di Roma La Sapienza, Roma, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 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 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 16 Sezione INFN di Firenze, Firenze, Italy.
- 17 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 18 University of Cincinnati, Cincinnati, OH, United States.
- 19 Sezione INFN di Ferrara, Ferrara, Italy.
- 20 University of Maryland, College Park, MD, United States.
- 21 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 22 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 23 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 24 Syracuse University, Syracuse, NY, United States.
- 25 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 26 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 27 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 28 Universitat de Barcelona, Barcelona, Spain.
- 29 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).
- 30 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 31 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 32 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 33 LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 34 Sezione INFN di Pisa, Pisa, Italy.
- 35 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 36 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 37 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 38 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 39 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 40 University of Birmingham, Birmingham, United Kingdom.
- 41 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
- 42 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 43 Sezione INFN di Cagliari, Cagliari, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 44 Sezione INFN di Cagliari, Cagliari, Italy.
- 45 Sezione INFN di Milano Bicocca, Milano, Italy.
- 46 Sezione INFN di Bologna, Bologna, Italy.
- 47 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 48 Sezione INFN di Genova, Genova, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 49 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 50 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 51 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland and Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 52 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 53 Massachusetts Institute of Technology, Cambridge, MA, United States.
- 54 Imperial College London, London, United Kingdom.
- 55 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 56 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 57 European Organization for Nuclear Research (CERN), Geneva, Switzerland and STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 58 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 59 AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 60 Sezione INFN di Genova, Genova, Italy.
- 61 Sezione INFN di Milano, Milano, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 62 Sezione INFN di Padova, Padova, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 63 Sezione INFN di Milano, Milano, Italy.
- 64 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia and European Organization for Nuclear Research (CERN), Geneva, Switzerland and Imperial College London, London, United Kingdom.
- 65 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 66 Institute for High Energy Physics (IHEP), Protvino, Russia and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 67 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 68 Sezione INFN di Milano Bicocca, Milano, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 69 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 70 Sezione INFN di Milano Bicocca, Milano, Italy and Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 71 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 72 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 73 Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain (associated with Universitat de Barcelona, Barcelona, Spain).
- 74 School of Physics, University College Dublin, Dublin, Ireland.
- 75 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France).
- 76 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 77 AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 78 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 79 Van Swinderen Institute, University of Groningen, Groningen, The Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands).
- 80 Sezione INFN di Bari, Bari, Italy.
- 81 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany and University of Birmingham, Birmingham, United Kingdom.
- 82 Celal Bayar University, Manisa, Turkey (associated with European Organization for Nuclear Research (CERN), Geneva, Switzerland).
- 83 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia and Department of Physics, University of Warwick, Coventry, United Kingdom.
- 84 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia and Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 85 Sezione INFN di Ferrara, Ferrara, Italy and NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 86 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom and Department of Physics, University of Oxford, Oxford, United Kingdom.
- 87 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 88 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Department of Physics, University of Oxford, Oxford, United Kingdom.
- 89 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- PMID: 25679884
- DOI: 10.1103/PhysRevLett.114.041601
Measurement of the semileptonic CP asymmetry in B0-B[over ¯]0 mixing
Authors
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 2 Universidad de Santiago de Compostela, Santiago de Compostela, Spain.
- 3 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 4 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 5 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 6 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 7 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 8 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 9 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 10 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 11 Sezione INFN di Roma La Sapienza, Roma, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 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 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 16 Sezione INFN di Firenze, Firenze, Italy.
- 17 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 18 University of Cincinnati, Cincinnati, OH, United States.
- 19 Sezione INFN di Ferrara, Ferrara, Italy.
- 20 University of Maryland, College Park, MD, United States.
- 21 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 22 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 23 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 24 Syracuse University, Syracuse, NY, United States.
- 25 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 26 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 27 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 28 Universitat de Barcelona, Barcelona, Spain.
- 29 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).
- 30 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 31 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 32 Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 33 LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 34 Sezione INFN di Pisa, Pisa, Italy.
- 35 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 36 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 37 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 38 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 39 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 40 University of Birmingham, Birmingham, United Kingdom.
- 41 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia.
- 42 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 43 Sezione INFN di Cagliari, Cagliari, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 44 Sezione INFN di Cagliari, Cagliari, Italy.
- 45 Sezione INFN di Milano Bicocca, Milano, Italy.
- 46 Sezione INFN di Bologna, Bologna, Italy.
- 47 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 48 Sezione INFN di Genova, Genova, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 49 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 50 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 51 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland and Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 52 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 53 Massachusetts Institute of Technology, Cambridge, MA, United States.
- 54 Imperial College London, London, United Kingdom.
- 55 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 56 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 57 European Organization for Nuclear Research (CERN), Geneva, Switzerland and STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 58 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 59 AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 60 Sezione INFN di Genova, Genova, Italy.
- 61 Sezione INFN di Milano, Milano, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 62 Sezione INFN di Padova, Padova, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 63 Sezione INFN di Milano, Milano, Italy.
- 64 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia and European Organization for Nuclear Research (CERN), Geneva, Switzerland and Imperial College London, London, United Kingdom.
- 65 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 66 Institute for High Energy Physics (IHEP), Protvino, Russia and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 67 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 68 Sezione INFN di Milano Bicocca, Milano, Italy and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 69 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
- 70 Sezione INFN di Milano Bicocca, Milano, Italy and Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 71 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 72 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands.
- 73 Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain (associated with Universitat de Barcelona, Barcelona, Spain).
- 74 School of Physics, University College Dublin, Dublin, Ireland.
- 75 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France).
- 76 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 77 AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland and European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 78 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 79 Van Swinderen Institute, University of Groningen, Groningen, The Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands).
- 80 Sezione INFN di Bari, Bari, Italy.
- 81 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany and University of Birmingham, Birmingham, United Kingdom.
- 82 Celal Bayar University, Manisa, Turkey (associated with European Organization for Nuclear Research (CERN), Geneva, Switzerland).
- 83 Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia and Department of Physics, University of Warwick, Coventry, United Kingdom.
- 84 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia and Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 85 Sezione INFN di Ferrara, Ferrara, Italy and NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 86 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom and Department of Physics, University of Oxford, Oxford, United Kingdom.
- 87 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 88 European Organization for Nuclear Research (CERN), Geneva, Switzerland and Department of Physics, University of Oxford, Oxford, United Kingdom.
- 89 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- PMID: 25679884
- DOI: 10.1103/PhysRevLett.114.041601
Abstract
The semileptonic CP asymmetry in B0-B[over ¯]0 mixing, a(sl)(d), is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb-1, recorded by the LHCb experiment. Semileptonic B0 decays are reconstructed in the inclusive final states D-μ+ and D*-μ+, where the D- meson decays into the K+π-π- final state and the D*- meson into the D[over ¯]0(→K+π-)π- final state. The asymmetry between the numbers of D(*)-μ+ and D(*)+μ- decays is measured as a function of the decay time of the B0 mesons. The CP asymmetry is measured to be a(sl)(d)=(-0.02±0.19±0.30)%, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of a(sl)(d) to date and is consistent with the prediction from the standard model.