TY - JOUR T1 - Direct top-quark decay width measurement in the t(t)over-bar lepton+jets channel at root \(s\)=8 TeV with the ATLAS experiment T2 - European Physical Journal C N2 - This paper presents a direct measurement of the decay width of the top quark using t (t) over bar events in the lepton+jets final state. The data sample was collected by the ATLAS detector at the LHC in proton-proton collisions at a centre-of-mass energy of 8 TeV and corresponds to an integrated luminosity of 20.2 fb(-1). The decay width of the top quark is measured using a template fit to distributions of kinematic observables associated with the hadronically and semileptonically decaying top quarks. The result, Gamma(t) = 1.76 +/- 0.33 (stat.) (+0.79)(-0.68) (syst.) GeV for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model. KW - Parton Distributions KW - Hadron Colliders KW - Pair Production KW - Cross-Section KW - pp Collisions Y1 - 2018 UR - https://opus.bibliothek.uni-wuerzburg.de/frontdoor/index/index/docId/22680 UR - https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-226805 VL - 78 IS - 129 ER -