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  • art%3A10.1007%2FJHEP11%282015%29211

    Rights statement: Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Date of Acceptance: 09/11/2015. Evidence of Acceptance on Publisher PDF

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Search for lepton-flavour-violating H → μτ decays of the Higgs boson with the ATLAS detector

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Article number211
<mark>Journal publication date</mark>30/11/2015
<mark>Journal</mark>Journal of High Energy Physics
Issue number11
Number of pages33
StatePublished
Original languageEnglish

Abstract

A direct search for lepton-flavour-violating H → μτ decays of the recently discovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis is performed in the H → μτ had channel, where τ had is a hadronically decaying τ -lepton. The search is based on the data sample of proton-proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3 fb−1 at a centre-of-mass energy of
√s=8 TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence-level upper limit on the branching fraction, Br(H → μτ ), is 1.85% (1.24%).