Search for the lepton flavour violating decay B <sup>+</sup> → K <sup>+</sup> μ <sup>−</sup> τ <sup>+</sup> using Bs2∗0 decays
Name
Aaij2020_Article_SearchForTheLeptonFlavourViola.pdf
Description
Published version
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894.95 KB
Format
Adobe PDF
Checksum (MD5)
e304d86144cad90e44355c567af337ba
Author(s)
Williams, Michael
Date Issued
June 1, 2020
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Williams, Michael. 2020. "Search for the lepton flavour violating decay B + → K + μ − τ + using Bs2∗0 decays." Journal of High Energy Physics, 2020 (6).
Version
Final published version
Abstract
© 2020, The Author(s). 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.].
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/JHEP06(2020)129
