en
Scientific article
Open access
English

Direct top-quark decay width measurement in the tt¯ lepton+jets channel at √s = 8 TeV with the ATLAS experiment

ContributorsATLAS Collaboration
Collection
  • Open Access - SCOAP3
Publication date2018
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.)-0.68+0.79(syst.)GeV for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model.

Citation (ISO format)
ATLAS Collaboration. Direct top-quark decay width measurement in the tt¯ lepton+jets channel at √s = 8 TeV with the ATLAS experiment. In: The European Physical Journal. C, Particles and Fields, 2018, vol. 78, n° 2, p. 129. doi: 10.1140/epjc/s10052-018-5595-5
Main files (1)
Article (Published version)
Identifiers
ISSN of the journal1434-6044
369views
207downloads

Technical informations

Creation03/02/2018 2:32:14 PM
First validation03/02/2018 2:32:14 PM
Update time03/15/2023 7:55:35 AM
Status update03/15/2023 7:55:35 AM
Last indexation02/12/2024 11:31:25 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack