Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/114955
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Type: Journal article
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
Author: Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adamczyk, L.
Adelman, J.
Adersberger, M.
Adye, T.
Affolder, A.
Afik, Y.
et al.
Citation: European Physical Journal C, 2018; 78(2):129-1-129-30
Publisher: Springer
Issue Date: 2018
ISSN: 1434-6044
1434-6052
Statement of
Responsibility: 
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.
Keywords: ATLAS Collaboration
Rights: © CERN for the benefit of the ATLAS collaboration 2018. This article is an open access publication
RMID: 0030083802
DOI: 10.1140/epjc/s10052-018-5595-5
Appears in Collections:Physics publications

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