Diffraction and an infrared finite gluon propagator

Abstract

We discuss some phenomenological applications of an infrared finite gluon propagator characterized by a dynamically generated gluon mass. In particular we compute the effect of the dynamical gluon mass on pp and,pp diffractive scattering. We also show how the data on gamma p photoproduction and hadronic gamma gamma reactions can be derived from the pp and pp forward scattering amplitudes by assuming vector meson dominance and the additive quark model.