OEDIPUS: Onium Evolution, Dipole Interaction and Perturbative Unitarisation Simulation

Abstract

A Monte Carlo simulation program is presented which can be used to determine the small-$x$ evolution of a heavy onium using Mueller's colour dipole formulation, giving the full distribution of dipoles in rapidity and impact parameter. Routines are also provided which calculate onium-onium scattering amplitudes between individual pairs of onium configurations, making it possible to establish the contribution of multiple pomeron exchange terms to onium-onium scattering (the unitarisation corrections).

21 pages LaTeX2e. Postscript available from http://www.hep.phy.cam.ac.uk/theory/papers and program available from ftp://axpf.hep.phy.cam.ac.uk/pub/theory/oedipus.tar.gz