Abstract
A search is presented for the lepton flavour violating decay B+ → K+μ−τ+ using a sample of proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb−1. The τ leptons are selected inclusively, primarily via decays with a single charged particle. The four-momentum of the τ lepton is determined by using B+ mesons from Bs2∗0→B+K− decays. No significant excess is observed, and an upper limit is set on the branching fraction ℬ(B+ → K+μ−τ+) < 3.9 × 10−5 at 90 % confidence level. The obtained limit is comparable to the world-best limit. [Figure not available: see fulltext.].
Original language | English |
---|---|
Article number | 129 |
Journal | Journal of High Energy Physics |
Volume | 2020 |
Issue number | 6 |
DOIs | |
Publication status | Published - 22 Jun 2020 |
Keywords
- B physics
- Beyond Standard Model
- Flavor physics
- Hadron-Hadron scattering (experiments)
- Rare decay
ASJC Scopus subject areas
- Nuclear and High Energy Physics