• Open Access

Measurement of the inclusive isolated prompt photon cross section in pp collisions at s=7TeV with the ATLAS detector

G. Aad et al. (ATLAS Collaboration)
Phys. Rev. D 83, 052005 – Published 18 March 2011

Abstract

A measurement of the cross section for the inclusive production of isolated prompt photons in pp collisions at a center-of-mass energy s=7TeV is presented. The measurement covers the pseudorapidity ranges |ηγ|<1.37 and 1.52|ηγ|<1.81 in the transverse energy range 15ETγ<100GeV. The results are based on an integrated luminosity of 880nb1, collected with the ATLAS detector at the Large Hadron Collider. Photon candidates are identified by combining information from the calorimeters and from the inner tracker. Residual background in the selected sample is estimated from data based on the observed distribution of the transverse isolation energy in a narrow cone around the photon candidate. The results are compared to predictions from next-to-leading-order perturbative QCD calculations.

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  • Received 20 December 2010

DOI:https://doi.org/10.1103/PhysRevD.83.052005

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2011 CERN, for the ATLAS Collaboration

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Vol. 83, Iss. 5 — 1 March 2011

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