Observation of B_{c}^{+}→D^{0}K^{+} Decays
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 University of Cincinnati, Cincinnati, Ohio, USA.
- 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, Netherlands.
- 9 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 10 Imperial College London, London, United Kingdom.
- 11 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 12 Sezione INFN di Padova, Padova, Italy.
- 13 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
- 14 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 15 Sezione INFN di Firenze, Firenze, Italy.
- 16 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 17 Sezione INFN di Ferrara, Ferrara, Italy.
- 18 University of Maryland, College Park, Maryland, USA.
- 19 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 20 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 21 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 22 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 23 Syracuse University, Syracuse, New York, USA.
- 24 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 25 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 26 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 27 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.
- 28 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 29 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 30 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 31 LAPP, Université Savoie Mont-Blanc, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 32 Sezione INFN di Pisa, Pisa, Italy.
- 33 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 34 Sezione INFN di Milano Bicocca, Milano, Italy.
- 35 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 36 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 37 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 38 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 39 Sezione INFN di Bologna, Bologna, Italy.
- 40 University of Birmingham, Birmingham, United Kingdom.
- 41 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 42 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 43 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 44 Sezione INFN di Cagliari, Cagliari, Italy.
- 45 Yandex School of Data Analysis, Moscow, Russia.
- 46 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 47 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 48 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 49 Sezione INFN di Genova, Genova, Italy.
- 50 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 51 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 52 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 53 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 54 Sezione INFN di Bari, Bari, Italy.
- 55 AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 56 Sezione INFN di Milano, Milano, Italy.
- 57 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 58 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 59 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 60 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia - CSIC, Valencia, Spain, associated with ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 61 Institut für Physik, Universität Rostock, Rostock, Germany, associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 62 University of Chinese Academy of Sciences, Beijing, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 63 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 64 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 65 National Research Centre Kurchatov Institute, Moscow, Russia, associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 66 School of Physics, University College Dublin, Dublin, Ireland.
- 67 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia, associated with LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 68 Van Swinderen Institute, University of Groningen, Groningen, Netherlands, associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 69 School of Physics and Technology, Wuhan University, Wuhan, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 70 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- PMID: 28368647
- DOI: 10.1103/PhysRevLett.118.111803
Observation of B_{c}^{+}→D^{0}K^{+} Decays
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 University of Cincinnati, Cincinnati, Ohio, USA.
- 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, Netherlands.
- 9 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 10 Imperial College London, London, United Kingdom.
- 11 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 12 Sezione INFN di Padova, Padova, Italy.
- 13 LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France.
- 14 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 15 Sezione INFN di Firenze, Firenze, Italy.
- 16 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 17 Sezione INFN di Ferrara, Ferrara, Italy.
- 18 University of Maryland, College Park, Maryland, USA.
- 19 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 20 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 21 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 22 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 23 Syracuse University, Syracuse, New York, USA.
- 24 Sezione INFN di Roma La Sapienza, Roma, Italy.
- 25 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 26 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 27 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.
- 28 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 29 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 30 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 31 LAPP, Université Savoie Mont-Blanc, CNRS/IN2P3, Annecy-Le-Vieux, France.
- 32 Sezione INFN di Pisa, Pisa, Italy.
- 33 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 34 Sezione INFN di Milano Bicocca, Milano, Italy.
- 35 LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 36 Laboratori Nazionali dell'INFN di Frascati, Frascati, Italy.
- 37 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 38 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 39 Sezione INFN di Bologna, Bologna, Italy.
- 40 University of Birmingham, Birmingham, United Kingdom.
- 41 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 42 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 43 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 44 Sezione INFN di Cagliari, Cagliari, Italy.
- 45 Yandex School of Data Analysis, Moscow, Russia.
- 46 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 47 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 48 Sezione INFN di Roma Tor Vergata, Roma, Italy.
- 49 Sezione INFN di Genova, Genova, Italy.
- 50 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 51 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 52 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 53 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 54 Sezione INFN di Bari, Bari, Italy.
- 55 AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 56 Sezione INFN di Milano, Milano, Italy.
- 57 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 58 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 59 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia.
- 60 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia - CSIC, Valencia, Spain, associated with ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 61 Institut für Physik, Universität Rostock, Rostock, Germany, associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 62 University of Chinese Academy of Sciences, Beijing, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 63 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 64 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 65 National Research Centre Kurchatov Institute, Moscow, Russia, associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 66 School of Physics, University College Dublin, Dublin, Ireland.
- 67 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia, associated with LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
- 68 Van Swinderen Institute, University of Groningen, Groningen, Netherlands, associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 69 School of Physics and Technology, Wuhan University, Wuhan, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 70 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- PMID: 28368647
- DOI: 10.1103/PhysRevLett.118.111803
Abstract
Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb^{-1}, recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the B_{c}^{+}→D^{0}K^{+} decay is observed with a statistical significance of 5.1 standard deviations. By normalizing to B^{+}→D[over ¯]^{0}π^{+} decays, a measurement of the branching fraction multiplied by the production rates for B_{c}^{+} relative to B^{+} mesons in the LHCb acceptance is obtained, R_{D^{0}K}=(f_{c}/f_{u})×B(B_{c}^{+}→D^{0}K^{+})=(9.3_{-2.5}^{+2.8}±0.6)×10^{-7}, where the first uncertainty is statistical and the second is systematic. This decay is expected to proceed predominantly through weak annihilation and penguin amplitudes, and is the first B_{c}^{+} decay of this nature to be observed.
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