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

In: Journal of High Energy Physics, Vol. 2016, 5, 01.08.2016, p. 1-42.

Research output: Contribution to journalArticle

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  • The ATLAS collaboration

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√=8s=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 < ETγ < 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.
Original languageEnglish
Article number5
Pages (from-to)1-42
Number of pages42
JournalJournal of High Energy Physics
Volume2016
DOIs
Publication statusPublished - 1 Aug 2016
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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