This paper presents a direct measurement of the decay width of the top quark using 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 . 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, for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560708 | PMC |
| http://dx.doi.org/10.1140/epjc/s10052-018-5595-5 | DOI Listing |
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