Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-11-12
Eur.Phys.J.C16:311-330,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
45 pages Latex, 16 eps files plus some metafont files; replaced by the version to appear in Eur. Phys. J. C
Scientific paper
10.1007/s100520050024
We discuss the production of photon pairs in hadronic collisions, from fixed target to LHC energies. The study which follows is based on a QCD calculation at full next-to-leading order accuracy, including single and double fragmentation contributions, and implemented in the form of a general purpose computer program of "partonic event generator" type. To illustrate the possibilities of this code, we present the comparison with observables measured by the WA70 and D0 collaborations, and some predictions for the irreducible background to the search of Higgs bosons at LHC in the channel $h \to \gamma \gamma$. We also discuss theoretical scale uncertainties for these predictions, and examine several infrared sensitive situations which deserve further study.
Binoth Thomas
Guillet J.-Ph.
Pilon Eric
Werlen Monique
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