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Measurement of the branching fraction of the decay Bs0 → K S0 K S0

  • LHCb Collaboration
  • Science Park 105
  • University of Zurich
  • University of Liverpool
  • Universidade de Santiago de Compostela
  • University of Bristol
  • Clermont-Auvergne University
  • Syracuse University
  • University of Michigan, Ann Arbor
  • Sezione INFN di Milano
  • University of Cincinnati
  • LNF-INFN
  • University of Dortmund
  • European Organization for Nuclear Research
  • University of Glasgow
  • University of Barcelona
  • Petersburg Nuclear Physics Institute (PNPI)
  • Imperial College London
  • Instituto de Biofisica da UFRJ
  • Université Paris-Saclay
  • Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
  • ENAC-IIC-GEL
  • Sezione INFN di Ferrara
  • University of Heidelberg
  • Aix-Marseille Université
  • Kurchatov Institute
  • Yandex School of Data Analysis
  • Sezione INFN di Cagliari
  • University of Warwick
  • University of Manchester
  • Sezione di Genova
  • University of Genoa
  • Institute for Theoretical and Experimental Physics
  • National University of Science and Technology “MISIS”
  • Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
  • National Centre for Nuclear Research (NCBJ)
  • Centro Brasileiro de Pesquisas Fisicas
  • University of Chinese Academy of Sciences
  • Sorbonne Université
  • RWTH Aachen University
  • Moscow State University
  • INFN
  • INFN Sezione di Bologna
  • University of Bologna
  • University of Cambridge
  • Institute for Nuclear Physics
  • University of Birmingham
  • University of Modena and Reggio Emilia
  • University of Oxford
  • Sezione di Roma
  • Massachusetts Institute of Technology
  • National Research University
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Novosibirsk State University
  • Tsinghua University
  • Wuhan University
  • University of Ferrara
  • INFN Sezione di Milano-Bicocca
  • University of Milano-Bicocca
  • Universitat Ramon LLull - CSIC
  • INFN Roma Tor Vergata
  • University of Pisa
  • LTHE (UMR 5564 CNRS/IRD/Université de Grenoble)
  • University of Edinburgh
  • Horia Hulubei National Institute of Physics and Nuclear Engineering
  • MST-8, Los Alamos National Laboratory
  • Universidad Nacional Autónoma de Honduras
  • INFN Sezione di Bari
  • Università degli studi di Bari Aldo Moro
  • Max-Planck-Institut für Kernphysik
  • Agh University of Science and Technology Faculty of Computer Science
  • Universitá di Cagliari
  • Central China Normal University
  • INFN Sezione di Trieste
  • Kharkov Institute of Physics and Technology
  • CCLRC Rutherford Appleton Laboratory
  • Institute for Nuclear Research of the Russian Academy of Sciences
  • University of Maryland, College Park
  • University of Milano
  • Tsinghua University
  • University of Valencia
  • Pontifícia Universidade Católica do Rio de Janeiro
  • Universidade Federal Do Triângulo Mineiro (UFTM)
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • Univ. Mentouri de Constantine
  • Vrije Universiteit Amsterdam
  • National Research Tomsk Polytechnic University
  • Institute of Nuclear Research, National Academy of Sciences in Ukraine
  • University of Siena
  • South China Normal University
  • University of Padova
  • Scuola Normale Superiore di Pisa
  • Kurchatov Institute
  • Iligan Institute of Technology (IIT)
  • University College Dublin
  • Universität Rostock
  • Universidad Nacional de Colombia
  • Hanoi University of Science and Technology
  • ICS/University of Groningen
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • University of Rome “Tor Vergata”
  • Università degli Studi della Basilicata
  • University of Rome
  • University of Urbino Carlo Bo
  • Hunan University
  • Shaanxi Normal University

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

A measurement of the branching fraction of the decay Bs0→KS0KS0 is performed using proton-proton collision data corresponding to an integrated luminosity of 5 fb-1 collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be B(Bs0→KS0KS0)=[8.3±1.6(stat)±0.9(syst)±0.8(norm)±0.3(fs/fd)]×10-6, where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode B0→φKS0 and the ratio of hadronization fractions fs/fd. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay B0→KS0KS0 is performed relative to that of the Bs0→KS0KS0 channel, and is found to be B(B0→KS0KS0)B(Bs0→KS0KS0)=[7.5±3.1(stat)±0.5(syst)±0.3(fs/fd)]×10-2.

langue originaleAnglais
Numéro d'article012011
journalPhysical Review D
Volume102
Numéro de publication1
Les DOIs
étatPublié - 1 juil. 2020

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