Tests of Lepton Universality Using B-0 -> K(S)(0)l(+) l(-) and B+ -> K*(+)l(+)l(-) Decays

LHCb collaboration

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Tests of lepton universality in B-0 -> K(S)(0)l(+)l(-) and B+ -> K*(+)l(+)l(-) decays where l is either an electron or a muon are presented. The differential branching fractions of B-0 -> K(S)(0)e(+)e(-) and B+ -> K*(+)e(+)e(-) decays are measured in intervals of the dilepton invariant mass squared. The measurements are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb(-1). The results are consistent with the standard model and previous tests of lepton universality in related decay modes. The first observation of B-0 -> K(S)(0)e(+)e(-) and B+ -> K*(+)e(+)e(-) decays is reported.
Original languageEnglish
Article number191802
Number of pages15
JournalPhysical Review Letters
Volume128
Issue number19
DOIs
Publication statusPublished - 11 May 2022

Keywords

  • COLLISIONS
  • K-ASTERISK(0)MU(+)MU(-)

Cite this