Search for Lepton-Flavor Violating Decays B+K+μ±e

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Abstract / Description of output

A search for the lepton-flavor violating decays B+→K+μ±e∓ is performed using a sample of proton-proton collision data, collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3  fb-1. No significant signal is observed, and upper limits on the branching fractions are set as B(B+→K+μ-e+)<7.0(9.5)×10-9 and B(B+→K+μ+e-)<6.4(8.8)×10-9 at 90% (95)% confidence level. The results improve the current best limits on these decays by more than one order of magnitude.
Original languageEnglish
Article number241802
JournalPhysical Review Letters
Issue number24
Early online date12 Dec 2019
Publication statusPublished - 13 Dec 2019


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