Search for the lepton-flavour violating decays B (s)0 → e ± μ

The Lhcb Collaboration

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

A search for the lepton-flavour violating decays Bs0 → e±μ and B0 → e±μ is performed based on a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yields are consistent with the background-only hypothesis. Upper limits on the branching fraction of the Bs0 → e±μ decays are evaluated both in the hypotheses of an amplitude completely dominated by the heavy eigenstate and by the light eigenstate. The results are @@ℬ(Bs0→e)<6.3(5.4)×10−9 and @@ℬ(Bs0→e)<7.2(6.0)×10−9 at 95% (90%) confidence level, respectively. The upper limit on the branching fraction of the B0 → e±μ decay is also evaluated, obtaining @@ℬ(B0→e)<1.3(1.0)×10−9 at 95% (90%) confidence level. These are the strongest limits on these decays to date.[Figure not available: see fulltext.].

Original languageEnglish (US)
Article number78
JournalJournal of High Energy Physics
Volume2018
Issue number3
DOIs
StatePublished - Mar 1 2018

Keywords

  • B physics
  • Branching fraction
  • Flavor physics
  • Hadron-Hadron scattering (experiments)
  • Rare decay

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Search for the lepton-flavour violating decays B (s)0 → e ± μ '. Together they form a unique fingerprint.

Cite this