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| Título: | Measurement of the Cross Section for Prompt Isolated Diphoton Production in pp̅ Collisions at √s=1.96 TeV |
Autor: | Aaltonen, T.; Álvarez González, B.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Palencia, Enrique CSIC ORCID; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; Vizán, J. CSIC ORCID | Fecha de publicación: | sep-2011 | Editor: | American Physical Society | Citación: | Physical Review Letters 107(10): 102003 (2011) | Resumen: | This Letter reports a measurement of the cross section of prompt isolated photon pair production in pp̅ collisions at a total energy √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. | Descripción: | 8 páginas, 1 figura.-- PACS numbers: 13.85.Qk.-- CDF Collaboration: et al. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevLett.107.102003 | URI: | http://hdl.handle.net/10261/46246 | DOI: | 10.1103/PhysRevLett.107.102003 | ISSN: | 0031-9007 | E-ISSN: | 1079-7114 |
| Aparece en las colecciones: | (IFCA) Artículos |
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| e102003.pdf | 287,82 kB | Adobe PDF |  Visualizar/Abrir |
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