We report a measurement of the rate of prompt diphoton production in p (p) over bar collisions at root 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.
|Titolo:||Measurement of the cross section for prompt diphoton production in p(p)over-bar collisions at root s=1.96 TeV RID C-1693-2008 RID G-1087-2011 RID E-4473-2011|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1103/PhysRevLett.95.022003|
|Appare nelle tipologie:||1.1 Articolo in rivista|