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Open Access item Measurement of the cross section for prompt isolated diphoton production in pp̅ collisions at √s=1.96  TeV

Authors:Aaltonen, T.
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, G.
Palencia, Enrique
Rodrigo, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar, Rocío
Vizán, J.
Issue Date:Sep-2011
Publisher:American Physical Society
Citation:Physical Review D 84(5): 052006 (2011)
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-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.
Description:32 páginas, 21 figuras, 10 tablas.-- PACS numbers: 13.85.Qk.-- CDF Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevD.84.052006
URI:http://hdl.handle.net/10261/46245
ISSN:1550-7998
E-ISSNmetadata.dc.identifier.doi = DOI:1550-2368
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Appears in Collections:(IFCA) Artículos

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