Measurement of the Ω_{c}^{0} Baryon Lifetime
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 2 Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
- 3 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 4 University of Michigan, Ann Arbor, USA (associated with Syracuse University, Syracuse, New York, USA).
- 5 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 6 University of Cincinnati, Cincinnati, Ohio, USA.
- 7 INFN Laboratori Nazionali di Frascati, Frascati, Italy.
- 8 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 9 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 10 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 11 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 12 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 13 Imperial College London, London, United Kingdom.
- 14 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 15 INFN Sezione di Padova, Padova, Italy.
- 16 LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France.
- 17 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 18 INFN Sezione di Firenze, Firenze, Italy.
- 19 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 20 INFN Sezione di Ferrara, Ferrara, Italy.
- 21 University of Maryland, College Park, Maryland, USA.
- 22 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 23 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 24 Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France.
- 25 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 26 Syracuse University, Syracuse, New York, USA.
- 27 Yandex School of Data Analysis, Moscow, Russia.
- 28 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 29 INFN Sezione di Cagliari, Monserrato, Italy.
- 30 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 31 National University of Science and Technology "MISIS", Moscow, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 32 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 33 INFN Sezione di Pisa, Pisa, Italy.
- 34 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 35 University of Chinese Academy of Sciences, Beijing, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 36 INFN Sezione di Milano-Bicocca, Milano, Italy.
- 37 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 38 LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 39 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 40 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 41 INFN Sezione di Bologna, Bologna, Italy.
- 42 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 43 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 44 University of Birmingham, Birmingham, United Kingdom.
- 45 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 46 INFN Sezione di Roma La Sapienza, Roma, Italy.
- 47 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 48 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 49 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 50 School of Physics and Technology, Wuhan University, Wuhan, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 51 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 52 INFN Sezione di Genova, Genova, Italy.
- 53 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 54 Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France.
- 55 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 56 Los Alamos National Laboratory (LANL), Los Alamos, USA (associated with Syracuse University, Syracuse, New York, USA).
- 57 INFN Sezione di Bari, Bari, Italy.
- 58 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 59 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 60 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 61 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 62 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 63 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia.
- 64 INFN Sezione di Milano, Milano, Italy.
- 65 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain (associated with ICCUB, Universitat de Barcelona, Barcelona, Spain).
- 66 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 67 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).
- 68 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 69 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 70 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 71 School of Physics, University College Dublin, Dublin, Ireland.
- 72 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France).
- 73 Van Swinderen Institute, University of Groningen, Groningen, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands).
- 74 National Research Tomsk Polytechnic University, Tomsk, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- PMID: 30230895
- DOI: 10.1103/PhysRevLett.121.092003
Measurement of the Ω_{c}^{0} Baryon Lifetime
Authors
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 2 Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
- 3 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 4 University of Michigan, Ann Arbor, USA (associated with Syracuse University, Syracuse, New York, USA).
- 5 Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 6 University of Cincinnati, Cincinnati, Ohio, USA.
- 7 INFN Laboratori Nazionali di Frascati, Frascati, Italy.
- 8 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 9 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 10 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 11 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 12 Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
- 13 Imperial College London, London, United Kingdom.
- 14 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 15 INFN Sezione di Padova, Padova, Italy.
- 16 LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France.
- 17 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 18 INFN Sezione di Firenze, Firenze, Italy.
- 19 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 20 INFN Sezione di Ferrara, Ferrara, Italy.
- 21 University of Maryland, College Park, Maryland, USA.
- 22 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 23 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 24 Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France.
- 25 Institute for High Energy Physics (IHEP), Protvino, Russia.
- 26 Syracuse University, Syracuse, New York, USA.
- 27 Yandex School of Data Analysis, Moscow, Russia.
- 28 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 29 INFN Sezione di Cagliari, Monserrato, Italy.
- 30 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 31 National University of Science and Technology "MISIS", Moscow, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 32 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 33 INFN Sezione di Pisa, Pisa, Italy.
- 34 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 35 University of Chinese Academy of Sciences, Beijing, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 36 INFN Sezione di Milano-Bicocca, Milano, Italy.
- 37 Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
- 38 LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 39 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 40 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 41 INFN Sezione di Bologna, Bologna, Italy.
- 42 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 43 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 44 University of Birmingham, Birmingham, United Kingdom.
- 45 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 46 INFN Sezione di Roma La Sapienza, Roma, Italy.
- 47 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 48 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 49 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 50 School of Physics and Technology, Wuhan University, Wuhan, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 51 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 52 INFN Sezione di Genova, Genova, Italy.
- 53 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 54 Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France.
- 55 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 56 Los Alamos National Laboratory (LANL), Los Alamos, USA (associated with Syracuse University, Syracuse, New York, USA).
- 57 INFN Sezione di Bari, Bari, Italy.
- 58 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 59 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 60 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China (associated with Center for High Energy Physics, Tsinghua University, Beijing, China).
- 61 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 62 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 63 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia.
- 64 INFN Sezione di Milano, Milano, Italy.
- 65 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain (associated with ICCUB, Universitat de Barcelona, Barcelona, Spain).
- 66 Institut für Physik, Universität Rostock, Rostock, Germany (associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany).
- 67 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).
- 68 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 69 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 70 National Research Centre Kurchatov Institute, Moscow, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- 71 School of Physics, University College Dublin, Dublin, Ireland.
- 72 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia (associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France).
- 73 Van Swinderen Institute, University of Groningen, Groningen, Netherlands (associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands).
- 74 National Research Tomsk Polytechnic University, Tomsk, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia).
- PMID: 30230895
- DOI: 10.1103/PhysRevLett.121.092003
Abstract
We report a measurement of the lifetime of the Ω_{c}^{0} baryon using proton-proton collision data at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb^{-1} collected by the LHCb experiment. The sample consists of about 1000 Ω_{b}^{-}→Ω_{c}^{0}μ^{-}ν[over ¯]_{μ}X signal decays, where the Ω_{c}^{0} baryon is detected in the pK^{-}K^{-}π^{+} final state and X represents possible additional undetected particles in the decay. The Ω_{c}^{0} lifetime is measured to be τ_{Ω_{c}^{0}}=268±24±10±2 fs, where the uncertainties are statistical, systematic, and from the uncertainty in the D^{+} lifetime, respectively. This value is nearly four times larger than, and inconsistent with, the current world-average value.
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