Dual Parton Model with complete formation zone intranuclear cascade and a minijet component for the description of particle production in heavy ion collisions at collider energies

Abstract

We present a Monte Carlo version of the Dual Parton Model for the description of particle production in hadron-nucleus and nucleus-nucleus collisions with a complete formation zone intranuclear cascade. Each nucleon nucleon collision is described by the two component Dual Parton Model. Soft hadronic collisions and hard perturbative collisions (minijets) are the two components included in the unitarization scheme. Depending on the transverse momentum cut off we find up to several thousand minijets in collisions of heavy ions at the TeV energies of the future LHC collider. The model is compared with rapidity distributions and grey-particle production in hadron-nucleus interactions as well as with results from nucleus-nucleus collisions. We present predictions for the rapidity and transverse momentum distributions as well as for the hadronic energy density at LHC energies. We also study the cascade of the partons from the perturbative component.