Measurement of the Cross Section for Prompt Isolated Diphoton Production in $$p\bar{p}$$ Collisions at \sqrt s = 1.96 TeV

Conference · Thu Sep 01 00:00:00 EDT 2011

OSTI ID:1028844

Vellidis, Costas

This article reports a measurement of the cross section of prompt isolated photon pair production in p{bar p} collisions at a total energy {radical}s = 1.96 TeV using data of 5.36 fb{sup -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 (LO) parton shower calculation and two next-to-leading order (NLO) calculations. The NLO 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 NLO predictions.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1028844
• Report Number(s): FERMILAB-CONF-11-493-E; arXiv eprint number arXiv:1109.6827; TRN: US1105526
• Resource Relation: Conference: To appear in the proceedings of DPF 2011, Providence, Rhode Island, USA, 9-13 Aug 2011
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
FORECASTING
LUMINOSITY
PAIR PRODUCTION
PHOTONS
PRODUCTION
QUANTUM CHROMODYNAMICS
QUARKS
RADIATIONS
SCATTERING
Experiment-HEP