Çetin, Serkant Ali2020-12-162020-12-162020-01-101873-24450370-2693https://hdl.handle.net/11411/2881https://doi.org/10.1016/j.physletb.2019.13506923 pagesThis Letter presents direct searches for lepton flavour violation in Higgs boson decays, H -> e tau and H -> mu tau, performed with the ATLAS detector at the LHC. The searches are based on a data sample of proton-proton collisions at a centre-of-mass energy root s = 13 TeV, corresponding to an integrated luminosity of 36.1 fb(-1). No significant excess is observed above the expected background from Standard Model processes. The observed (median expected) 95% confidence-level upper limits on the lepton-flavour-violating branching ratios are 0.47%(0.34(-0.10)(+0.13)%) and 0.28%(0.37(-0.10)(+0.14)%) for H -> e tau and H -> mu tau, respectively. (C) 2019 The Author(s). Published by Elsevier B.V.eninfo:eu-repo/semantics/openAccessPlus plusArticle2-s2.0-8507494589810.1016/j.physletb.2019.135069Q1WOS:000503832500048