Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector
| dc.contributor.author | ATLAS Collaboration | |
| dc.date.accessioned | 2018-11-01T20:00:33Z | |
| dc.date.available | 2018-11-01T20:00:33Z | |
| dc.date.issued | 2017-11-15 | |
| dc.identifier.citation | The ATLAS collaboration, Aaboud, M., Aad, G. et al. J. High Energ. Phys. (2017) 2017: 86. https://doi.org/10.1007/JHEP11(2017)086 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1808/27145 | |
| dc.description.abstract | 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. | en_US |
| dc.publisher | Springer Verlag | en_US |
| dc.rights | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. | en_US |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
| dc.subject | Hadron-Hadron scattering (experiments) | en_US |
| dc.subject | Top physics | en_US |
| dc.title | Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector | en_US |
| dc.type | Article | en_US |
| kusw.kudepartment | Physics and Astronomy | en_US |
| dc.identifier.doi | 10.1007/JHEP11(2017)086 | en_US |
| kusw.oaversion | Scholarly/refereed, publisher version | en_US |
| kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
| dc.rights.accessrights | openAccess | en_US |
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