Relating the QCD Pomeron to an effective gluon mass

Abstract

We construct the Pomeron as an exchange of two nonperturbative gluons, where the nonperturbative gluon propagator is described by an approximate solution of the Schwinger-Dyson equation which contains a dynamically generated gluon mass. We compute the total and elastic differential (dσdt) cross sections for pp scattering, obtaining agreement with the experimental data for a gluon mass m=370 MeV for ΛQCD=300 MeV. In particular, the Pomeron effectively behaves like a photon-exchange diagram with a coupling determined by the gluon mass. © 1993 The American Physical Society.