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

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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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, diff...

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Bibliographic Details
Main Authors: Bauer, Gerry P., Conway, J., Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Makhoul, K., Paus, Christoph M. E.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2012
Online Access:http://hdl.handle.net/1721.1/69661
https://orcid.org/0000-0002-6047-4211
Description
Summary: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.

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