Measurement of CP-Averaged Observables in the B^{0}→K^{*0}μ^{+}μ^{-} Decay

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Authors

  • LHCb Collaboration

Colleges, School and Institutes

External organisations

  • Nikhef National Institute for Subatomic Physics
  • University of Zurich
  • University of Liverpool
  • Universidad de Santiago de Compostela
  • University of Bristol
  • Université Clermont Auvergne
  • Syracuse University
  • Istituto Nazionale di Fisica Nucleare, Sezione di Milano
  • Los Alamos National Laboratory
  • Laboratori Nazionali dell'Infn di Frascati
  • TU Dortmund University, Germany
  • CERN
  • University of Glasgow
  • Universitat Autonoma de Barcelona
  • Petersburg Nuclear Physics Institute (PNPI)
  • Imperial College London
  • Universidade Federal Do Rio de Janeiro
  • Paris-Saclay University
  • Sezione INFN di Firenze
  • Ecole Polytechnique Federale de Lausanne
  • Sezione INFN di Ferrara
  • Ruprecht-Karls-Universität Heidelberg
  • Institute for High Energy Physics (IHEP)
  • Yandex School of Data Analysis
  • IN2P3
  • University of Warwick
  • Institute of Physics

Abstract

An angular analysis of the B^{0}→K^{*0}(→K^{+}π^{-})μ^{+}μ^{-} decay is presented using a dataset corresponding to an integrated luminosity of 4.7  fb^{-1} of pp collision data collected with the LHCb experiment. The full set of CP-averaged observables are determined in bins of the invariant mass squared of the dimuon system. Contamination from decays with the K^{+}π^{-} system in an S-wave configuration is taken into account. The tension seen between the previous LHCb results and the standard model predictions persists with the new data. The precise value of the significance of this tension depends on the choice of theory nuisance parameters.

Details

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Volume125
Issue number1
Publication statusPublished - 3 Jul 2020

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