Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector

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Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector. / 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; Lytken, Else; Mankinen, Katja; Mjörnmark, Ulf; Poulsen, Trine; Smirnova, Oxana; Viazlo, Oleksandr; ATLAS Collaboration.

In: Journal of High Energy Physics, Vol. 2017, No. 11, 86, 2017.

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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 ; Lytken, Else ; Mankinen, Katja ; Mjörnmark, Ulf ; Poulsen, Trine ; Smirnova, Oxana ; Viazlo, Oleksandr ; ATLAS Collaboration. / Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector. In: Journal of High Energy Physics. 2017 ; Vol. 2017, No. 11.

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TY - JOUR

T1 - Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector

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 - Lytken, Else

AU - Mankinen, Katja

AU - Mjörnmark, Ulf

AU - Poulsen, Trine

AU - Smirnova, Oxana

AU - Viazlo, Oleksandr

AU - ATLAS Collaboration

N1 - Export Date: 12 December 2017

PY - 2017

Y1 - 2017

N2 - The cross section of a top-quark pair produced in association with a photon is measured in proton-proton collisions at a centre-of-mass energy of s=8 TeV with 20.2 fb−1 of data collected by the ATLAS detector at the Large Hadron Collider in 2012. The measurement is performed by selecting events that contain a photon with transverse momentum pT > 15 GeV, an isolated lepton with large transverse momentum, large missing transverse momentum, and at least four jets, where at least one is identified as originating from a b-quark. The production cross section is measured in a fiducial region close to the selection requirements. It is found to be 139 ± 7 (stat.) ± 17 (syst.) fb, in good agreement with the theoretical prediction at next-to-leading order of 151 ± 24 fb. In addition, differential cross sections in the fiducial region are measured as a function of the transverse momentum and pseudorapidity of the photon.[Figure not available: see fulltext.]. © 2017, The Author(s).

AB - The cross section of a top-quark pair produced in association with a photon is measured in proton-proton collisions at a centre-of-mass energy of s=8 TeV with 20.2 fb−1 of data collected by the ATLAS detector at the Large Hadron Collider in 2012. The measurement is performed by selecting events that contain a photon with transverse momentum pT > 15 GeV, an isolated lepton with large transverse momentum, large missing transverse momentum, and at least four jets, where at least one is identified as originating from a b-quark. The production cross section is measured in a fiducial region close to the selection requirements. It is found to be 139 ± 7 (stat.) ± 17 (syst.) fb, in good agreement with the theoretical prediction at next-to-leading order of 151 ± 24 fb. In addition, differential cross sections in the fiducial region are measured as a function of the transverse momentum and pseudorapidity of the photon.[Figure not available: see fulltext.]. © 2017, The Author(s).

KW - Hadron-Hadron scattering (experiments)

KW - Top physics

U2 - 10.1007/JHEP11(2017)086

DO - 10.1007/JHEP11(2017)086

M3 - Article

VL - 2017

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 11

M1 - 86

ER -