%0 Electronic Article
%T Direct top-quark decay width measurement in the t―t lepton+jets channel at √s=8 TeV with the ATLAS experiment
%N CERN-EP-2017-187
%M PUBDB-2017-12057
%M CERN-EP-2017-187
%M arXiv:1709.04207
%Z 44 pages in total, author list starting page 28, 6 figures, 3 tables,   submitted to EPJC, All figures including auxiliary figures are available at   https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2017-02/
%X This paper presents a direct measurement of the decay width of the top quark using t―t 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<sup>−1</sup>. 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, Γ<sub>t</sub> = 1.76 ±0.33 (stat.) <sup>+0.79</sup><sub>−0.68</sub> (syst.) GeV for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model.
%F PUB:(DE-HGF)25 ; PUB:(DE-HGF)29
%9 PreprintReport
%R 10.3204/PUBDB-2017-12057
%U https://bib-pubdb1.desy.de/record/395296