Measurement of the cross section for production of two isolated prompt photons in pp¯ collisions at √s =1.8 TeV
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We present measurements from events with two isolated prompt photons in p̄p 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, has a mean value of KT=5.1±1.1 GeV. © 1993 The American Physical Society.
author list (cited authors)
Abe, F., Albrow, M., Amidei, D., Anway-Wiese, C., Apollinari, G., Atac, M., ... Zucchelli, S.