Volume 402 - The 22nd International Workshop on Neutrinos from Accelerators (NuFact2021) - All Sessions
Search for Tau -> 3mu decays with CMS experiment at LHC
C. Aruta*  on behalf of the CMS Collaboration
Full text: pdf
Published on: March 31, 2022
Abstract
The search for the charged lepton flavor violating decay $\tau \rightarrow 3\mu$ has been performed at the CMS experiment at the LHC, using data collected in 2016 during proton-proton collisions. The data sample corresponds to an integrated luminosity of 33.2 $fb^{-1}$, recorded at a center-of-mass energy of 13 TeV. The results obtained by exploiting tau leptons produced in decays of heavy flavor $B$ and $D$ mesons and from $W$ bosons have been combined and they are presented in this contribution. No significant excess was observed and an upper limit on the branching fraction of $\mathcal{B}(\tau \rightarrow 3\mu)$ of $8.0 \times 10^{-8}$ at 90% confidence level was set.
DOI: https://doi.org/10.22323/1.402.0223
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