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

ATLAS Collaboration

研究成果: Article査読

19 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号129
ジャーナルEuropean Physical Journal C
78
2
DOI
出版ステータスPublished - 2018 2月 1

ASJC Scopus subject areas

  • 工学(その他)
  • 物理学および天文学(その他)

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