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Measurement of the cross-section for production of two isolated prompt photons in $\bar{p}p$ collisions at $\sqrt{s} = 1.8$ TeV

Authors
  • Abe, F.
  • Albrow, Michael G.
  • Amidei, Dante E.
  • Anway, Carol E.
  • Apollinari, G.
  • Atac, M.
  • Auchincloss, Priscilla S.
  • Azzi, P.
  • Baden, Andrew R.
  • Bacchetta, Nicola
  • Badgett, W.
  • Bailey, Mark W.
  • Bamberger, A.
  • de Barbaro, Pawel
  • Barbaro-Galtieri, Angela
  • Barnes, V.E.
  • Barnett, Bruce A.
  • Bauer, G.
  • Baumann, T.
  • Bedeschi, Franco
  • And 302 more
Publication Date
Dec 01, 1992
Identifiers
DOI: 10.1103/PhysRevLett.70.2232
OAI: oai:inspirehep.net:343802
Source
INSPIRE-HEP
License
Unknown
External links

Abstract

We present measurements from events with two isolated prompt photons in p¯p collisions at √s =1.8 TeV. The differential cross section, measured as a function of transverse momentum (PT) of each photon, is about 3 times what next-to-leading-order QCD calculations predict. The cross section for photons with PT in the range 10–19 GeV is 86±27(stat)−23+32(syst) pb. We also study the correlation between the two photons in both azimuthal angle and PT. The magnitude of the vector sum of the transverse momenta of both photons, KT=‖PT1+PT2‖, has a mean value of 〈KT〉=5.1±1.1 GeV.

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