Search for $\tau \to 3\mu$ decays using $\tau$ leptons produced in D and B meson decays

CMS Physics Analysis Summaries
Report number	CMS-PAS-BPH-17-004
Title	Search for $\tau \to 3\mu$ decays using $\tau$ leptons produced in D and B meson decays
Corporate author(s)	CMS Collaboration
Collaboration	CMS Collaboration
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	A search for charged lepton flavor violating decays $\tau\to3\mu$ has been performed using proton-proton collisions with a center-of-mass energy of 13 TeV. The analysis uses the data set collected by the CMS detector in 2016, corresponding to an integrated luminosity of 33 fb$^{-1}$, and exploits $\tau$ leptons produced in D and B meson decays. No signal is observed, and an upper limit of $8.8\times 10^{-8}$ is set at the $90\%$ confidence level on the branching fraction of the $\tau$ lepton to three muons.
Other source	Inspire
Related	superseded by: CERN-EP-2020-113
Email contact: cms-pag-conveners-bphysics@cern.ch Fulltext in PDF Figure_003-a Figure_003-c Figure_003-b Figure_004-a Figure_006 Figure_005-e Figure_007 Figure_008 Figure_004-b Figure_002-a Figure_002-b Figure_002-c Figure_005-c Figure_005-b Figure_005-a Figure_005-d Figure_005-f Figure_001 Figure_003-d Additional information for the analysis (restricted access)