TY - JOUR
T1 - Direct top-quark decay width measurement in the $t\bar{t}$ lepton+jets channel at $\sqrt{s}$=8 TeV with the ATLAS experiment
AU - Clark, Philip James
AU - Farrington, Sinead
AU - Faucci Giannelli, Michele
AU - Gao, Yanyan
AU - Hasib, Ahmed
AU - Leonidopoulos, Christos
AU - Martin, Victoria Jane
AU - Mijović, Liza
AU - Mills, Corrinne
AU - Wynne, Benjamin
AU - Collaboration, Atlas
PY - 2018/2/15
Y1 - 2018/2/15
N2 - This paper presents a direct measurement of the decay width of the top quark using $t\bar{t}$ 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$^{-1}$. 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, $\Gamma_t = 1.76 \pm 0.33 (\rm{stat.}) ^{+0.79}_{-0.68} (\rm{syst.})\; \rm{GeV}$ for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model.
AB - This paper presents a direct measurement of the decay width of the top quark using $t\bar{t}$ 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$^{-1}$. 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, $\Gamma_t = 1.76 \pm 0.33 (\rm{stat.}) ^{+0.79}_{-0.68} (\rm{syst.})\; \rm{GeV}$ for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model.
U2 - 10.1140/epjc/s10052-018-5595-5
DO - 10.1140/epjc/s10052-018-5595-5
M3 - Article
SN - 1434-6044
VL - C78
JO - The European Physical Journal C (EPJ C)
JF - The European Physical Journal C (EPJ C)
IS - 2
M1 - 129
ER -