# Search for Lepton-Flavor Violating Decays B^{+}→K^{+}μ^{±}e^{∓}.

Aaij, R, Abellán Beteta, C, Ackernley, T, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J
et al (show 891 more authors) (2019) Search for Lepton-Flavor Violating Decays B^{+}→K^{+}μ^{±}e^{∓}. Physical review letters, 123 (24). 241802 - ?.

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## Abstract

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.

Item Type: Article LHCb Collaboration Symplectic Admin 07 Jan 2020 10:34 06 Dec 2021 08:24 10.1103/physrevlett.123.241802 https://journals.aps.org/prl/pdf/10.1103/PhysRevLe... https://livrepository.liverpool.ac.uk/id/eprint/3069395