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

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Bibtex

@article{72888d3749e94bac8fe317568a0fbbd1,
title = "Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector",
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.[Figure not available: see fulltext.]. {\textcopyright} 2017, The Author(s).",
keywords = "Hadron-Hadron scattering (experiments), Top physics",
author = "M Aaboud and G Aad and B. Abbott and O Abdinov and B Abeloos and Abidi, {S. H.} and Torsten {\AA}kesson and Simona Bocchetta and Caterina Doglioni and Vincent Hedberg and G{\"o}ran Jarlskog and Charles Kalderon and Else Lytken and Katja Mankinen and Ulf Mj{\"o}rnmark and Trine Poulsen and Oxana Smirnova and Oleksandr Viazlo and {ATLAS Collaboration}",
note = "Export Date: 12 December 2017",
year = "2017",
doi = "10.1007/JHEP11(2017)086",
language = "English",
volume = "2017",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer",
number = "11",

}