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

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 tha...

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Guardado en:
Detalles Bibliográficos
Publicado: 2017
Materias:
Hadron-Hadron scattering (experiments)
Top physics
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2017_n11_p_TheATLAScollaboration
http://hdl.handle.net/20.500.12110/paper_11266708_v2017_n11_p_TheATLAScollaboration
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11266708_v2017_n11_p_TheATLAScollaboration
record_format dspace
spelling paper:paper_11266708_v2017_n11_p_TheATLAScollaboration2023-06-08T16:08:49Z Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector Hadron-Hadron scattering (experiments) Top physics 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 p T > 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). 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2017_n11_p_TheATLAScollaboration http://hdl.handle.net/20.500.12110/paper_11266708_v2017_n11_p_TheATLAScollaboration
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Hadron-Hadron scattering (experiments)
Top physics
spellingShingle Hadron-Hadron scattering (experiments)
Top physics
Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector
topic_facet Hadron-Hadron scattering (experiments)
Top physics
description 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 p T > 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).
title Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector
title_short Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector
title_full Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector
title_fullStr Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector
title_full_unstemmed Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector
title_sort measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 tev with the atlas detector
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2017_n11_p_TheATLAScollaboration
http://hdl.handle.net/20.500.12110/paper_11266708_v2017_n11_p_TheATLAScollaboration
_version_ 1768542139644379136

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