Measurement of the cross section for prompt isolated diphoton production in pp̅ collisions at √s=1.96 TeV
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Aaltonen-2011-Measurement of the cross section for prompt isolated.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Bauer, Gerry P
Makhoul, Khaldoun
Date Issued
September 2011
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Aaltonen, T. et al. “Measurement of the cross section for prompt isolated diphoton production in pp[over ¯] collisions at sqrt[s]=1.96 TeV.” Physical Review D 84.5 (2011): n. pag. Web. 26 Jan. 2012. © 2011 American Physical Society
Version
Final published version
Abstract
This article reports a measurement of the production cross section of prompt isolated photon pairs in proton-antiproton collisions at √s=1.96 TeV using the CDF II detector at the Fermilab Tevatron collider. The data correspond to an integrated luminosity of 5.36 fb[superscript -1]. The cross section is presented as a function of kinematic variables sensitive to the reaction mechanisms. The results are compared with three perturbative QCD calculations: (1) a leading-order parton shower Monte Carlo, (2) a fixed next-to-leading-order calculation and (3) a next-to-leading-order/next-to-next-to-leading-log resummed calculation. The comparisons show that, within their known limitations, all calculations predict the main features of the data, but no calculation adequately describes all aspects of the data.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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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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DOI of Published Version
https://doi.org/10.1103/PhysRevD.84.052006
