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Measurement of the inclusive isolated prompt photon cross-section in pp collisions at √s = 7 TeV using 35 pb[superscript -1] of ATLAS data

Author(s)
Taylor, Frank E.
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Abstract
A measurement of the differential cross-section for the inclusive production of isolated prompt photons in pp collisions at a center-of-mass energy √s = 7 TeV is presented. The measurement covers the pseudorapidity ranges |η|<1.37 and 1.52⩽|η|<2.37 in the transverse energy range 45⩽ET<400 GeV. The results are based on an integrated luminosity of 35 pb[superscript −1], collected with the ATLAS detector at the LHC. The yields of the signal photons are measured using a data-driven technique, based on the observed distribution of the hadronic energy in a narrow cone around the photon candidate and the photon selection criteria. The results are compared with next-to-leading order perturbative QCD calculations and found to be in good agreement over four orders of magnitude in cross-section.
Date issued
2011-11
URI
http://hdl.handle.net/1721.1/95931
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physics Letters B
Publisher
Elsevier
Citation
Aad, G., B. Abbott, J. Abdallah, A.A. Abdelalim, A. Abdesselam, O. Abdinov, B. Abi, et al. “Measurement of the Inclusive Isolated Prompt Photon Cross-Section in Pp Collisions at √s = 7 TeV Using 35 pb[superscript -1] of ATLAS Data.” Physics Letters B 706, no. 2–3 (December 2011): 150–167.
Version: Final published version
ISSN
03702693

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