Observation of New Resonances Decaying to J/ψK^{+} and J/ψϕ
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 2 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 3 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 4 Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
- 5 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 6 Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 7 University of Michigan, Ann Arbor, Michigan, USA, associated with Syracuse University, Syracuse, New York, USA.
- 8 INFN Sezione di Milano, Milano, Italy.
- 9 University of Cincinnati, Cincinnati, Ohio, USA.
- 10 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 11 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 12 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 13 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 14 Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 15 Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia.
- 16 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 17 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 18 Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France.
- 19 INFN Sezione di Firenze, Firenze, Italy.
- 20 INFN Sezione di Ferrara, Ferrara, Italy.
- 21 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 22 Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia.
- 23 Syracuse University, Syracuse, New York, USA.
- 24 Yandex School of Data Analysis, Moscow, Russia.
- 25 Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France.
- 26 Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France.
- 27 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 28 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 29 Imperial College London, London, United Kingdom.
- 30 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 31 INFN Sezione di Genova, Genova, Italy.
- 32 National University of Science and Technology "MISIS", Moscow, Russia, associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 33 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 34 INFN Sezione di Pisa, Pisa, Italy.
- 35 INFN Sezione di Cagliari, Monserrato, Italy.
- 36 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 37 Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 38 INFN Laboratori Nazionali di Frascati, Frascati, Italy.
- 39 LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 40 Universita degli Studi di Padova, Universita e INFN, Padova, Padova, Italy.
- 41 INFN Sezione di Bologna, Bologna, Italy.
- 42 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 43 School of Physics and Technology, Wuhan University, Wuhan, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 44 University of Birmingham, Birmingham, United Kingdom.
- 45 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 46 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 47 National Research University Higher School of Economics, Moscow, Russia, associated with Yandex School of Data Analysis, Moscow, Russia.
- 48 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 49 University of Maryland, College Park, Maryland, USA.
- 50 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia.
- 51 INFN Sezione di Milano-Bicocca, Milano, Italy.
- 52 DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain, associated with ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 53 University of Chinese Academy of Sciences, Beijing, China.
- 54 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 55 Institute Of High Energy Physics (IHEP), Beijing, China.
- 56 Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France.
- 57 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 58 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 59 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 60 INFN Sezione di Bari, Bari, Italy.
- 61 Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA.
- 62 Van Swinderen Institute, University of Groningen, Groningen, Netherlands, associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 63 Universiteit Maastricht, Maastricht, Netherlands, associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 64 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 65 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 66 School of Physics, University College Dublin, Dublin, Ireland.
- 67 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 68 INFN Sezione di Perugia, Perugia, Italy, associated with INFN Sezione di Ferrara, Ferrara, Italy.
- 69 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 70 School of Physics and Astronomy, Monash University, Melbourne, Australia, associated with Department of Physics, University of Warwick, Coventry, United Kingdom.
- 71 School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China.
- 72 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 73 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.
- 74 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China.
- 75 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain.
- 76 Guangdong Provencial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 77 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 78 National Research Tomsk Polytechnic University, Tomsk, Russia, associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 79 INFN Sezione di Roma La Sapienza, Roma, Italy.
- 80 National Research Centre Kurchatov Institute, Moscow, Russia, associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 81 Institut für Physik, Universität Rostock, Rostock, Germany, associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 82 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia, associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 83 Universität Bonn-Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany, associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 84 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 85 Physics and Micro Electronic College, Hunan University, Changsha City, China, associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China.
- PMID: 34477418
- DOI: 10.1103/PhysRevLett.127.082001
Observation of New Resonances Decaying to J/ψK^{+} and J/ψϕ
Authors
Affiliations
- 1 Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 2 Physik-Institut, Universität Zürich, Zürich, Switzerland.
- 3 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 4 Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
- 5 H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
- 6 Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
- 7 University of Michigan, Ann Arbor, Michigan, USA, associated with Syracuse University, Syracuse, New York, USA.
- 8 INFN Sezione di Milano, Milano, Italy.
- 9 University of Cincinnati, Cincinnati, Ohio, USA.
- 10 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 11 European Organization for Nuclear Research (CERN), Geneva, Switzerland.
- 12 School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 13 ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 14 Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 15 Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI), Gatchina, Russia.
- 16 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 17 Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- 18 Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France.
- 19 INFN Sezione di Firenze, Firenze, Italy.
- 20 INFN Sezione di Ferrara, Ferrara, Italy.
- 21 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 22 Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia.
- 23 Syracuse University, Syracuse, New York, USA.
- 24 Yandex School of Data Analysis, Moscow, Russia.
- 25 Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France.
- 26 Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France.
- 27 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- 28 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 29 Imperial College London, London, United Kingdom.
- 30 Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
- 31 INFN Sezione di Genova, Genova, Italy.
- 32 National University of Science and Technology "MISIS", Moscow, Russia, associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 33 I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
- 34 INFN Sezione di Pisa, Pisa, Italy.
- 35 INFN Sezione di Cagliari, Monserrato, Italy.
- 36 Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
- 37 Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 38 INFN Laboratori Nazionali di Frascati, Frascati, Italy.
- 39 LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 40 Universita degli Studi di Padova, Universita e INFN, Padova, Padova, Italy.
- 41 INFN Sezione di Bologna, Bologna, Italy.
- 42 Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
- 43 School of Physics and Technology, Wuhan University, Wuhan, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 44 University of Birmingham, Birmingham, United Kingdom.
- 45 Department of Physics, University of Oxford, Oxford, United Kingdom.
- 46 Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
- 47 National Research University Higher School of Economics, Moscow, Russia, associated with Yandex School of Data Analysis, Moscow, Russia.
- 48 Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
- 49 University of Maryland, College Park, Maryland, USA.
- 50 Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia.
- 51 INFN Sezione di Milano-Bicocca, Milano, Italy.
- 52 DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain, associated with ICCUB, Universitat de Barcelona, Barcelona, Spain.
- 53 University of Chinese Academy of Sciences, Beijing, China.
- 54 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 55 Institute Of High Energy Physics (IHEP), Beijing, China.
- 56 Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France.
- 57 Center for High Energy Physics, Tsinghua University, Beijing, China.
- 58 School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 59 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
- 60 INFN Sezione di Bari, Bari, Italy.
- 61 Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA.
- 62 Van Swinderen Institute, University of Groningen, Groningen, Netherlands, associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 63 Universiteit Maastricht, Maastricht, Netherlands, associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
- 64 AGH-University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
- 65 Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
- 66 School of Physics, University College Dublin, Dublin, Ireland.
- 67 NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
- 68 INFN Sezione di Perugia, Perugia, Italy, associated with INFN Sezione di Ferrara, Ferrara, Italy.
- 69 STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 70 School of Physics and Astronomy, Monash University, Melbourne, Australia, associated with Department of Physics, University of Warwick, Coventry, United Kingdom.
- 71 School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China.
- 72 National Center for Nuclear Research (NCBJ), Warsaw, Poland.
- 73 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.
- 74 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China.
- 75 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain.
- 76 Guangdong Provencial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou, China, associated with Center for High Energy Physics, Tsinghua University, Beijing, China.
- 77 Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
- 78 National Research Tomsk Polytechnic University, Tomsk, Russia, associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 79 INFN Sezione di Roma La Sapienza, Roma, Italy.
- 80 National Research Centre Kurchatov Institute, Moscow, Russia, associated with Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia.
- 81 Institut für Physik, Universität Rostock, Rostock, Germany, associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 82 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia, associated with LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France.
- 83 Universität Bonn-Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany, associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 84 Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
- 85 Physics and Micro Electronic College, Hunan University, Changsha City, China, associated with Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China.
- PMID: 34477418
- DOI: 10.1103/PhysRevLett.127.082001
Abstract
The first observation of exotic states with a new quark content cc[over ¯]us[over ¯] decaying to the J/ψK^{+} final state is reported with high significance from an amplitude analysis of the B^{+}→J/ψϕK^{+} decay. The analysis is carried out using proton-proton collision data corresponding to a total integrated luminosity of 9 fb^{-1} collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV. The most significant state, Z_{cs}(4000)^{+}, has a mass of 4003±6_{-14}^{+4} MeV, a width of 131±15±26 MeV, and spin parity J^{P}=1^{+}, where the quoted uncertainties are statistical and systematic, respectively. A new 1^{+} X(4685) state decaying to the J/ψϕ final state is also observed with high significance. In addition, the four previously reported J/ψϕ states are confirmed and two more exotic states, Z_{cs}(4220)^{+} and X(4630), are observed with significance exceeding 5 standard deviations.
