Search for the lepton flavour violating decay B+ -> K+mu(-)tau(+) using Bs20 decays



Aaij, R, Beteta, C Abellan, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 835 more authors) (2020) Search for the lepton flavour violating decay B+ -> K+mu(-)tau(+) using Bs20 decays. The Journal of High Energy Physics, 2020 (6). 129-.

This is the latest version of this item.

Access the full-text of this item by clicking on the Open Access link.
[img] Text
2003.04352v1.pdf - Published version
Available under License : See the attached licence file.

Download (639kB) | Preview

Abstract

A search is presented for the lepton flavour violating decay $B^+ \rightarrow K^+ \mu^- \tau^+$ 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 $\tau$ leptons are selected inclusively, primarily via decays with a single charged particle. The four-momentum of the $\tau$ lepton is determined by using $B^+$ mesons from $B_{s2}^{*0} \rightarrow B^+ K^-$ decays. No significant excess is observed, and an upper limit is set on the branching fraction $B(B^+ \rightarrow K^+ \mu^- \tau^+) < 3.9 \times 10^{-5}$ at 90% confidence level. The obtained limit is comparable to the world-best limit.

Item Type: Article
Additional Information: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-043.html (LHCb public pages)
Uncontrolled Keywords: B physics, Beyond Standard Model, Flavor physics, Hadron-Hadron scattering (experiments), Rare decay
Depositing User: Symplectic Admin
Date Deposited: 15 Dec 2020 09:22
Last Modified: 14 Mar 2024 23:09
DOI: 10.1007/JHEP06(2020)129
Open Access URL: http://doi.org/10.1007/JHEP06(2020)129
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3110350

Available Versions of this Item