TY - JOUR
T1 - Search for the lepton flavour violating decay B+ → K+μ-τ+ using B*0s2 decays
AU - Clarke, Peter
AU - Currie, Robert
AU - Eisenhardt, Stephan
AU - Gambetta, Silvia
AU - Muheim, Franz
AU - Needham, Matthew
AU - Pappagallo, Marco
AU - Williams, Mark
AU - Collaboration, LHCb
PY - 2020/6/22
Y1 - 2020/6/22
N2 - 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 $ {B}_{s2}^{\ast 0}\to {B}^{+}{K}^{-} $ decays. No significant excess is observed, and an upper limit is set on the branching fractionℬ(B$^{+}$ → K$^{+}$μ$^{−}$τ$^{+}$) < 3.9 × 10$^{−5}$ at 90 % confidence level.The obtained limit is comparable to the world-best limit.[graphic not available: see fulltext]
AB - 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 $ {B}_{s2}^{\ast 0}\to {B}^{+}{K}^{-} $ decays. No significant excess is observed, and an upper limit is set on the branching fractionℬ(B$^{+}$ → K$^{+}$μ$^{−}$τ$^{+}$) < 3.9 × 10$^{−5}$ at 90 % confidence level.The obtained limit is comparable to the world-best limit.[graphic not available: see fulltext]
U2 - 10.1007/JHEP06(2020)129
DO - 10.1007/JHEP06(2020)129
M3 - Article
SN - 1029-8479
VL - 2020
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
M1 - 129
ER -