Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s=8 TeV with the ATLAS detector



Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Abolins, M, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2852 more authors) (2016) Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s=8 TeV with the ATLAS detector JOURNAL OF HIGH ENERGY PHYSICS, 2016 (8). pp. 1-42. ISSN 1029-8479, 1029-8479

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Abstract

Abstract: A measurement of the cross section for the inclusive production of isolated prompt photons in proton-proton collisions at a centre-of-mass energy of s=8 TeV is presented. The measurement covers the pseudorapidity ranges |η<sup>γ</sup> | < 1.37 and 1.56 ≤ |η<sup>γ</sup> | < 2.37 in the transverse energy range 25 < E<inf>T</inf> <sup>γ</sup> < 1500 GeV. The results are based on an integrated luminosity of 20.2 fb<sup>−1</sup>, recorded by the ATLAS detector at the LHC. Photon candidates are identified by combining information from the calorimeters and the inner tracker. The background is subtracted using a data-driven technique, based on the observed calorimeter shower-shape variables and the deposition of hadronic energy in a narrow cone around the photon candidate. The measured cross sections are compared with leading-order and next-to-leading order perturbative QCD calculations and are found to be in a good agreement over ten orders of magnitude.[Figure not available: see fulltext.]

Item Type: Article
Additional Information: 24 pages plus author list (40 pages total), 8 figures, 3 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2014-12/
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Photon production, proton-proton scattering
Depositing User: Symplectic Admin
Date Deposited: 03 Jan 2017 14:21
Last Modified: 24 Jun 2026 14:31
DOI: 10.1007/JHEP08(2016)005
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3005058
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