Measurement of the cross section for prompt isolated diphoton production in pp¯ collisions at s=1.96TeV
Abstract
This article reports a measurement of the production cross section of prompt isolated photon pairs in proton-antiproton collisions at s=1.96TeV using the CDF II detector at the Fermilab Tevatron collider. The data correspond to an integrated luminosity of 5.36fb-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.
- Publication:
-
Physical Review D
- Pub Date:
- September 2011
- DOI:
- 10.1103/PhysRevD.84.052006
- arXiv:
- arXiv:1106.5131
- Bibcode:
- 2011PhRvD..84e2006A
- Keywords:
-
- 13.85.Qk;
- Inclusive production with identified leptons photons or other nonhadronic particles;
- High Energy Physics - Experiment
- E-Print:
- 33 pages, 21 figures, submitted to Physical Review D