Measurement of the Cross Section for Prompt Isolated Diphoton Production in pp[over-bar] Collisions at [sqrt]s=1.96 TeV
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Aaltonen-2011-Letters-Measurement of the Cross Section.pdf
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Author(s)
Bauer, Gerry P.
Conway, J.
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Makhoul, K.
Paus, Christoph M. E.
Alternative Title
Measurement of the Cross Section for Prompt Isolated Diphoton Production in pp̅ Collisions at √s=1.96 TeV
Date Issued
September 2011
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
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.107.102003
