Measurement of the inclusive isolated prompt photons cross section in pp collisions at $\sqrt{s}=7$  TeV with the ATLAS detector using 4.6  fb$^{−1}$

Philip James Clark, Victoria Jane Martin, Corrinne Mills, Atlas Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

A measurement of the cross section for the production of isolated prompt photons in pp collisions at a center-of-mass energy s=7  TeV is presented. The results are based on an integrated luminosity of 4.6  fb−1 collected with the ATLAS detector at the LHC. The cross section is measured as a function of photon pseudorapidity ηγ and transverse energy ETγ in the kinematic range 100≤ETγ<1000  GeV and in the regions |ηγ|<1.37 and 1.52≤|ηγ|<2.37. The results are compared to leading-order parton-shower Monte Carlo models and next-to-leading-order perturbative QCD calculations. Next-to-leading-order perturbative QCD calculations agree well with the measured cross sections as a function of ETγ and ηγ.

Original languageEnglish
Article numberAad:2013zba
Pages (from-to)052004
JournalPhysical Review
VolumeD89
Issue number5
DOIs
Publication statusPublished - 24 Mar 2014

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