Measurement of the cross section for prompt diphoton production in p(p)over-bar collisions at root s=1.96 TeV


Acosta D., Adelman J., Affolder T., Akimoto T., Albrow M., Ambrose D., ...More

PHYSICAL REVIEW LETTERS, vol.95, no.2, 2005 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 95 Issue: 2
  • Publication Date: 2005
  • Doi Number: 10.1103/physrevlett.95.022003
  • Journal Name: PHYSICAL REVIEW LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Istanbul University Affiliated: Yes

Abstract

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.