Search for lepton-flavour-violating $H\to\mu\tau$ decays of the Higgs boson with the ATLAS detector - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Journal of High Energy Physics Année : 2015

Search for lepton-flavour-violating $H\to\mu\tau$ decays of the Higgs boson with the ATLAS detector

G. Aad
N. Berger
T. Hryn’ova
Y. Coadou
E. Monnier

Résumé

A direct search for lepton-flavour-violating (LFV) $H\to\mu\tau$ decays of the recently discovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis is performed in the $H\to\mu\tau_{\mathrm{had}}$ channel, where $\tau_{\mathrm{had}}$ is a hadronically decaying $\tau$-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 $\sqrt{s}=8$ 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($H\to\mu\tau$), is 1.85% (1.24%).

Dates et versions

in2p3-01185529 , version 1 (20-08-2015)

Identifiants

Citer

G. Aad, Z. Barnovska, N. Berger, M. Delmastro, L. Di Ciaccio, et al.. Search for lepton-flavour-violating $H\to\mu\tau$ decays of the Higgs boson with the ATLAS detector. Journal of High Energy Physics, 2015, 11, pp.211. ⟨10.1007/JHEP11(2015)211⟩. ⟨in2p3-01185529⟩
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