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Scientific article
Open access
English

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

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 1608, p. 005-047
Collection
  • Open Access - SCOAP3
Publication date2016
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 γ | < 1 . 37 and 1 . 56 ≤ | η γ | < 2 . 37 in the transverse energy range 25 < E T γ < 1500 GeV. The results are based on an integrated luminosity of 20.2 fb −1 , 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.

Keywords
  • Hadron-Hadron scattering (experiments)
  • Photon production
  • Proton-proton scattering
Citation (ISO format)
ATLAS Collaboration. Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s = 8 TeV with the ATLAS detector. In: The journal of high energy physics, 2016, vol. 1608, p. 005–047. doi: 10.1007/JHEP08(2016)005
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Article (Published version)
Identifiers
ISSN of the journal1029-8479
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Creation09/02/2016 9:36:17 AM
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