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Article
Report number arXiv:1605.03495 ; CERN-EP-2016-035
Title Measurement of the inclusive isolated prompt photon cross section in pp collisions at s=8 TeV with the ATLAS detector
Related titleMeasurement of the inclusive isolated prompt photon cross section in pp collisions at s=8 TeV with the ATLAS detector
Author(s) ATLAS Collaboration  Visa alla 2862 författare
Publication 2016-08-01
Imprint 9 May 2016
Number of pages 43
Note 26 pages plus author list (43 pages total), 6 figures, 6 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-09/
In: JHEP 06 (2016) 005
DOI 10.1007/JHEP08(2016)005
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords QCD ; photon production ; experimental results
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=8TeV is presented. The measurement covers the pseudorapidity ranges |ηγ|<1.37 and 1.56|ηγ|<2.37 in the transverse energy range 25<ETγ<1500GeV. The results are based on an integrated luminosity of 20.2 fb1, 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.
Copyright/License preprint: © 2016-2024 CERN (License: CC-BY-4.0)
publication: © 2016-2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³



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Email contact: a_ciocio@lbl.gov


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