Direct top-quark decay width measurement in the tt̄ lepton+jets channel at √s̅=8 TeV with the ATLAS experiment
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| Publication date | 02-2018 |
| Journal | European Physical Journal C |
| Article number | 129 |
| Volume | Issue number | 78 | 2 |
| Number of pages | 30 |
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| Abstract |
This paper presents a direct measurement of the decay width of the top quark using tt̄ 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.
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| Document type | Article |
| Language | English |
| Published at | https://doi.org/10.1140/epjc/s10052-018-5595-5 |
| Published at | https://arxiv.org/abs/1709.04207 |
| Downloads |
Aaboud2018_Article_DirectTop-quarkDecayWidthMeasu
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