Search for lepton-flavour-violating decays of the Higgs and Z bosons with the ATLAS detector

The ATLAS Collaboration

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Abstract

Direct searches for lepton flavour violation in decays of the Higgs and Z bosons with the ATLAS detector at the LHC are presented. The following three decays are considered: H→eτ, H→μτ, and Z→μτ. The searches are based on the data sample of proton–proton collisions collected by the ATLAS detector corresponding to an integrated luminosity of 20.3 fb−1 at a centre-of-mass energy of √s=8 TeV. No significant excess is observed, and upper limits on the lepton-flavour-violating branching ratios are set at the 95 %% confidence level: Br (H→eτ)<1.04%, Br (H→μτ)<1.43%, and Br (Z→μτ)<1.69×10−5.
Original languageEnglish
Article number70
Pages (from-to)1-31
Number of pages31
JournalEuropean Physical Journal C: Particles and Fields
Volume77
Early online date4 Feb 2017
DOIs
Publication statusPublished - Feb 2017

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