Direct top-quark decay width measurement in the t(t)over-bar lepton+jets channel at √s = 8 TeV with the ATLAS experiment
File(s)10.1140%2Fepjc%2Fs10052-018-5595-5.pdf (2.41 MB)
Published version
Author(s)
Type
Journal Article
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,
t = 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.
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,
t = 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.
Date Issued
2018-02-15
Date Acceptance
2018-01-27
Citation
European Physical Journal C: Particles and Fields, 2018, 78 (2)
ISSN
1434-6044
Publisher
Springer Verlag (Germany)
Journal / Book Title
European Physical Journal C: Particles and Fields
Volume
78
Issue
2
Copyright Statement
© CERN for the benefit of the ATLAS collaboration 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000425393800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
HADRON COLLIDERS
PARTON DISTRIBUTIONS
COLLISIONS
BOSON
PLUS
LHC
Publication Status
Published
Article Number
ARTN 129