Search for lepton-flavour-violating H → μτ decays of the Higgs boson with the ATLAS detector
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KünyeAad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M. ... ATLAS Collaboration. (2015). Search for lepton-flavour-violating H → μτ decays of the Higgs boson with the ATLAS detector. Journal of High Energy Physics, 2015(11), 1-33. http://dx.doi.org/10.1007/JHEP11(2015)211
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 → μτhad channel, where τhad 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 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%).