Qcd physics: measurement of the cross section for prompt diphoton production in p anti-p collisions at s**(1/2) = 1.96 tev

Acosta, D. ; Collaboration, The CDF

Lawrence Berkeley National Laboratory

关键词: Quantum Chromodynamics;    Photons;    Transverse Momentum;    43 Particle Accelerators;    Production;   

DOI  :  10.2172/842916
RP-ID  :  LBNL--58117
RP-ID  :  AC03-76SF00098
RP-ID  :  842916

美国|英语

来源: UNT Digital Library

【 摘 要 】

We report a measurement of the rate of prompt diphoton production in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample of 207 pb{sup -1} collected with the upgraded Collider Detector at Fermilab (CDF II). The background from non-prompt 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.