This article reports a measurement of the production cross section of prompt isolated photon pairs in proton-antiproton collisions at root 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(-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.
|Titolo:||Measurement of the cross section for prompt isolated diphoton production in p(p)over-bar collisions at root s=1.96 TeV|
|Citazione:||T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Measurement of the cross section for prompt isolated diphoton production in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(5), 052006-1-052006-32.|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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