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Measurement of the Cross Section for Prompt Isolated Diphoton Production in pp[over-bar] Collisions at [sqrt]s=1.96  TeV

Author(s)
Bauer, Gerry P.; Conway, J.; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Makhoul, K.; Paus, Christoph M. E.; ... Show more Show less
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Alternative title
Measurement of the Cross Section for Prompt Isolated Diphoton Production in pp̅ Collisions at √s=1.96  TeV
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
This Letter reports a measurement of the cross section of prompt isolated photon pair production in pp[over-bar] collisions at a total energy [sqrt]s=1.96  TeV using data of 5.36  fb-1 integrated luminosity collected with the CDF II detector at the Fermilab Tevatron. The measured cross section, differential in basic kinematic variables, is compared with three perturbative QCD predictions, a leading order parton shower calculation and two next-to-leading order calculations. The next-to-leading order calculations reproduce most aspects of the data. By including photon radiation from quarks before and after hard scattering, the parton shower prediction becomes competitive with the next-to-leading order predictions.
Date issued
2011-09
URI
http://hdl.handle.net/1721.1/69661
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaltonen, T. et al. (CDF Collaboration). "Measurement of the Cross Section for Prompt Isolated Diphoton Production in pp[over-bar] Collisions at [sqrt]s=1.96  TeV." Physical Review Letters 107, 102003 (2011) [8 pages] © 2011 American Physical Society.
Version: Final published version
ISSN
0031-9007

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