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

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Direct top-quark decay width measurement in the tt¯ lepton+jets channel at √s=8TeV with the ATLAS experiment. / Aaboud, M; Aad, G; Abbott, B.; Abdinov, O; Abeloos, B; Abidi, S. H.; Åkesson, Torsten; Bocchetta, Simona; Doglioni, Caterina; Hedberg, Vincent; Jarlskog, Göran; Kalderon, Charles; Kellermann, Edgar; Konya, Balazs; Lytken, Else; Mankinen, Katja; Mjörnmark, Ulf; Pöttgen, Ruth; Poulsen, Trine; Smirnova, Oxana; Viazlo, Oleksandr; ATLAS Collaboration.

In: European Physical Journal C, Vol. 78, No. 2, 129 , 2018.

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Aaboud, M ; Aad, G ; Abbott, B. ; Abdinov, O ; Abeloos, B ; Abidi, S. H. ; Åkesson, Torsten ; Bocchetta, Simona ; Doglioni, Caterina ; Hedberg, Vincent ; Jarlskog, Göran ; Kalderon, Charles ; Kellermann, Edgar ; Konya, Balazs ; Lytken, Else ; Mankinen, Katja ; Mjörnmark, Ulf ; Pöttgen, Ruth ; Poulsen, Trine ; Smirnova, Oxana ; Viazlo, Oleksandr ; ATLAS Collaboration. / Direct top-quark decay width measurement in the tt¯ lepton+jets channel at √s=8TeV with the ATLAS experiment. In: European Physical Journal C. 2018 ; Vol. 78, No. 2.

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TY - JOUR

T1 - Direct top-quark decay width measurement in the tt¯ lepton+jets channel at √s=8TeV with the ATLAS experiment

AU - Aaboud, M

AU - Aad, G

AU - Abbott, B.

AU - Abdinov, O

AU - Abeloos, B

AU - Abidi, S. H.

AU - Åkesson, Torsten

AU - Bocchetta, Simona

AU - Doglioni, Caterina

AU - Hedberg, Vincent

AU - Jarlskog, Göran

AU - Kalderon, Charles

AU - Kellermann, Edgar

AU - Konya, Balazs

AU - Lytken, Else

AU - Mankinen, Katja

AU - Mjörnmark, Ulf

AU - Pöttgen, Ruth

AU - Poulsen, Trine

AU - Smirnova, Oxana

AU - Viazlo, Oleksandr

AU - ATLAS Collaboration

N1 - Export Date: 7 March 2018

PY - 2018

Y1 - 2018

N2 - 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. © 2018, CERN for the benefit of the ATLAS collaboration.

AB - 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. © 2018, CERN for the benefit of the ATLAS collaboration.

U2 - 10.1140/epjc/s10052-018-5595-5

DO - 10.1140/epjc/s10052-018-5595-5

M3 - Article

C2 - 31265010

VL - 78

JO - European Physical Journal C. Particles and Fields

JF - European Physical Journal C. Particles and Fields

SN - 1434-6044

IS - 2

M1 - 129

ER -