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

The ATLAS collaboration

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32 Scopus citations

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 |ηγ | < 1.37 and 1.56 ≤ |ηγ | < 2.37 in the transverse energy range 25 < ET 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.[Figure not available: see fulltext.]

Original languageEnglish (US)
Article number5
JournalJournal of High Energy Physics
Volume2016
Issue number8
DOIs
StatePublished - Aug 1 2016

Keywords

  • Hadron-Hadron scattering (experiments)
  • Photon production
  • proton-proton scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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