Search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at √s = 13 TeV

The CMS collaboration

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Resumen

Results are reported from a search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at 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. [Figure not available: see fulltext.]

Idioma originalInglés
Número de artículo163
PublicaciónJournal of High Energy Physics
Volumen2021
N.º1
DOI
EstadoPublicada - ene. 2021

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