$Search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at s $$ \sqrt{\mathrm{s}} $$ = 13 TeV$

Search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at s $$ \sqrt{\mathrm{s}} $$ = 13 TeV

Show other versions (1)

Abstract Results are reported from a search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at s...

Full description

Bibliographic Details
Main Authors:	Sirunyan, A. M, Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Dragicevic, M., Erö, J., Escalante Del Valle, A., Frühwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Madlener, T., Mikulec, I., Pitters, F. M, Rad, N.
Other Authors:	Massachusetts Institute of Technology. Department of Physics
Format:	Article
Language:	English
Published:	Springer Berlin Heidelberg 2021
Online Access:	https://hdl.handle.net/1721.1/132022

Description
Summary:	Abstract Results are reported from a search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at s $$ \sqrt{\mathrm{s}} $$ = 13 TeV. The data sample corresponds to an integrated luminosity of 33.2 fb−1 recorded by the CMS experiment at the LHC in 2016. The search exploits τ leptons produced in both W boson and heavy-flavor hadron decays. No significant excess above the expected background is observed. An upper limit on the branching fraction ℬ(τ → 3μ) of 8.0 × 10−8 at 90% confidence level is obtained, with an expected upper limit of 6.9 × 10−8.