PHOTON PAIR PRODUCTION WITH SOFT GLUON RESUMMATION IN HADRONIC-INTERACTIONS

The production rate and kinematic distributions of isolated photon pai rs produced in hadron interactions are studied. The effects of the ini tial-state multiple soft-gluon emission to the scattering subprocesses q (q) over bar,qg, and gg-->gamma gamma X are resummed with the Colli ns-Soper-Sterman soft gluon resummation formalism. The effects of frag mentation photons from qg-->gamma q, followed by q-->gamma X, are also studied. The results are compared with data from the Fermilab Tevatro n collider. A prediction of the production rate and kinematic distribu tions of the diphoton pair in proton-nucleon reactions is also present ed.