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|Title:||Direct top-quark decay width measurement in the tt¯ lepton+jets channel at √s = 8TeV with the ATLAS experiment|
|Other Titles:||Direct top-quark decay width measurement in the tt -bar lepton+jets channel at root s = 8 TeV with the ATLAS experiment|
|Citation:||European Physical Journal C, 2018; 78(2):129-1-129-30|
|M. Aaboud ... P. Jackson ... A. Petridis ... M.J. White ... [et al.] (The ATLAS Collaboration)|
|Abstract:||This paper presents a direct measurement of the decay width of the top quark using tt¯ 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, Γt = 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.|
|Rights:||© CERN for the benefit of the ATLAS collaboration 2018. This article is an open access publication|
|Appears in Collections:||Physics publications|
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