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Differential branching fractions and isospin asymmetries of B -> K ((*)) mu (+) mu (-) decays

Research output: Contribution to journalArticle

  • R. Aaij
  • B. Adeva
  • M. Adinolfi
  • A. Affolder
  • Z. Ajaltouni
  • J. Albrecht
  • F. Alessio
  • M. Alexander
  • S. Ali
  • G. Alkhazov
  • P. Alvarez Cartelle
  • A. A. Alves
  • S. Amato
  • S. Amerio
  • Y. Amhis
  • L. An
  • L. Anderlini
  • J. Anderson
  • R. Andreassen
  • M. Andreotti
  • J. E. Andrews
  • R. B. Appleby
  • O. Aquines Gutierrez
  • F. Archilli
  • A. Artamonov
  • M. Artuso
  • E. Aslanides
  • G. Auriemma
  • M. Baalouch
  • S. Bachmann
  • J. J. Back
  • A. Badalov
  • V. Balagura
  • W. Baldini
  • R. J. Barlow
  • C. Barschel
  • S. Barsuk
  • W. Barter
  • V. Batozskaya
  • Th Bauer
  • A. Bay
  • Laurence Carson
  • P. E. L. Clarke
  • G. A. Cowan
  • Daniel Craik
  • S. Eisenhardt
  • Silvia Gambetta
  • F. Muheim
  • M. Needham
  • S. Playfer
  • LHCb Collaboration

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Original languageEnglish
Article number133
Number of pages22
JournalJournal of High Energy Physics
Issue number6
DOIs
StatePublished - 23 Jun 2014

Abstract

The isospin asymmetries of B -> K mu (+) mu (-) and B -> K (*) mu (+) mu (-) decays and the partial branching fractions of the B (0) -> K (0) mu (+) mu (-), B (+) -> K (+) mu (+) mu (-) and B (+) -> K (*+) mu (+) mu (-) decays are measured as functions of the dimuon mass squared, q (2). The data used correspond to an integrated luminosity of 3 fb(-1) from proton-proton collisions collected with the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV in 2011 and 2012, respectively. The isospin asymmetries are both consistent with the Standard Model expectations. The three measured branching fractions favour lower values than their respective theoretical predictions, however they are all individually consistent with the Standard Model.

    Research areas

  • Rare decay, Branching fraction, B physics, Flavour Changing Neutral Currents, Hadron-Hadron Scattering

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