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Pàgina inicial > Articles > Articles publicats > Measurement of the cross section for prompt diphoton production in pp¯ collisions at √s=1.96 TeV |
Data: | 2005 |
Resum: | We report a measurement of the rate of prompt diphoton production in pp¯ collisions at √s=1. 96 TeV using a data sample of 207 pb−1 collected with the upgraded Collider Detector at Fermilab. The background from nonprompt sources is determined using a statistical method based on differences in the electromagnetic showers. The cross section is measured as a function of the diphoton mass, the transverse momentum of the diphoton system, and the azimuthal angle between the two photons and is found to be consistent with perturbative QCD predictions. |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; Versió publicada |
Matèria: | CDF ; Elementary particle electromagnetic interactions ; High-energy elementary particle interactions ; Photon production ; Proton-proton inclusive interactions ; Quantum chromodynamics |
Publicat a: | Physical review letters, Vol. 95, Issue 2 (July 2005) , p. 022003-1-022003-7, ISSN 1079-7114 |
7 p, 127.6 KB |