Measurement of the Isolated Prompt Photon Production Cross Section in pp Collisions at sqrt(s) = 7 TeV
Journal Article

Published: Wednesday, February 23, 2011
Citation: Physical Review Letters, Volume 106, Number 8, Pages 082001
arXiv.org: 1012.0799
Link: http://prl.aps.org/abstract/PRL/v106/i8/e082001

Authors (1 total): J. Rohlf

Abstract:

The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy ETγ in pp collisions at √s=7  TeV using data recorded by the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2.9  pb-1. Photons are required to have a pseudorapidity |ηγ|<1.45 and ETγ>21  GeV, covering the kinematic region 0.006<xT<0.086. The measured cross section is found to be in agreement with next-to-leading-order perturbative QCD calculations.