Abstract
Since its discovery in 2012, the Higgs boson has served as an important probe for precision measurements of the Standard Model and for searches for new physics beyond the Standard Model. One major goal of the LHC is the precise measurement of the Higgs Yukawa couplings to fermions. The latest ATLAS results of measurements of the Higgs boson decaying to leptons are presented, namely the cross-section measurement of the Higgs boson decay to two tau leptons and the searches for the di-muon decay and lepton-flavour-violating decays of the Higgs boson.
Highlights
In 2012, the ATLAS [1] and CMS [2] collaborations discovered a boson which is consistent with the Standard Model Higgs boson [3, 4]
Evidence for the decay of the Higgs boson into two tau leptons has been found by the ATLAS and the CMS collaboration in data collected in proton-proton collisions at a centre-of-mass energy of s = 7 TeV and 8 TeV in 2011 and 2012 [5, 6]
The cross-section measurements of Higgs boson decays to pairs of tau leptons in 36.1 fb−1 of proton–proton collision data taken by the ATLAS detector at a centre-of-mass energy of s = 13 TeV are presented
Summary
In 2012, the ATLAS [1] and CMS [2] collaborations discovered a boson which is consistent with the Standard Model Higgs boson [3, 4]. Evidence for the decay of the Higgs boson into two tau leptons has been found by the ATLAS and the CMS collaboration in data collected in proton-proton collisions at a centre-of-mass energy of s = 7 TeV and 8 TeV in 2011 and 2012 [5, 6]. The cross-section measurements of Higgs boson decays to pairs of tau leptons in 36.1 fb−1 of proton–proton collision data taken by the ATLAS detector at a centre-of-mass energy of s = 13 TeV are presented. An updated analysis performed by the ATLAS collaboration on the search of the Higgs boson decay to a di-muon pair is presented [11] It is performed on data collected at s = 13 TeV which corresponds to an integrated luminosity of 79.8 fb−1. The splitting allows to adjust the event selection criteria such that the signal sensitivity can be optimized
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