Orateur
Dr
Costas Vellidis
(Fermilab)
Description
We report a measurement of the cross section of prompt isolated photon pair production in ppbar collisions at a total CM energy of 1.96 TeV using data of 5.4/fb integrated luminosity
collected with the CDF II detector at the Fermilab Tevatron.
The measured differential cross section
is compared with three perturbative QCD predictions,
a Leading Order (LO) parton shower Monte Carlo and two
Next-to-Leading Order (NLO) calculations. The NLO calculations reproduce most aspects of the data. By including photon radiation from quarks before and after hard scattering, the parton shower
Monte Carlo becomes competitive with the NLO predictions.
Auteur principal
Dr
Christina Mesropian
(The Rockefeller University)
