Search for the lepton-flavor violating decay $B_s^0\to \varphi {\mu }^{\pm }{\tau }^{\mp }$

Abstract

A search for the lepton-flavor violating decays $B_s^0\to \varphi {\mu }^{\pm }{\tau }^{\mp }$ is presented, using a sample of proton-proton collisions at center-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of $9{\text{fb}}^{-1}$. The $\tau$ leptons are selected using decays with three charged pions. No significant excess is observed, and an upper limit on the branching fraction is determined to be $\mathcal{B}(B_s^0\to \varphi {\mu }^{\pm }{\tau }^{\mp })<1.0\times 10^{-5}$ at 90% confidence level.

All figures and tables, along with any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/1788 (LHCb public pages)

References in corpus (11)

• PYTHIA 6.4 Physics and Manual
• Lepton Flavor Violation in B Decays?
• Handling uncertainties in background shapes: the discrete profiling method
• RapidSim: an application for the fast simulation of heavy-quark hadron decays
• Measurement of the ratios of branching fractions $\mathcal{R}(D^{\ast })$ and $\mathcal{R}(D^0)$
• A search for the decay modes B+/- to h+/- tau l
• Test of lepton flavour universality using $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$ decays with hadronic $\tau$ channels
• Search for the lepton flavour violating decays $B^{+}\to K^{+}{\tau }^{\pm }{\ell }^{\mp }$ ($\ell =e,\mu$) at Belle
• Search for the lepton-flavour violating decays $B^0\to K^{\ast 0}{\tau }^{\pm }{\mu }^{\mp }$
• Measurement of the absolute branching fraction of the inclusive decay $D_s^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}X$
• Measurements of the branching fractions of the inclusive decays $D^0(D^{+})\to {\pi }^{+}{\pi }^{+}{\pi }^{-}X$

Cited by in corpus (2)

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