The Monte Carlo Event Generator DPMJET-III
Stefan Roesler, Ralph Engel, Johannes Ranft
TL;DR
The paper presents DPMJET-III, a Monte Carlo event generator that unifies several prior codes (DPMJET-II, DTUNUC-2, PHOJET-1.12) to simulate hadron-hadron, hadron-nucleus, nucleus-nucleus, and photon-induced interactions from a few GeV to cosmic-ray energies. It implements the Dual Parton Model with soft/hard components, high-mass diffraction, Gribov-Glauber multiple scattering, an intranuclear cascade, and Lund string fragmentation, while incorporating photon interactions via direct/resolved processes and generalized vector dominance. Validation against diverse data sets shows generally good agreement across hadronic and photonic processes, with caveats at low energies and some heavy-ion observables. The work provides a versatile, thoroughly tested tool for high-energy/astroparticle and radiation-physics simulations, with availability upon request and online resources.
Abstract
A new version of the Monte Carlo event generator DPMJET is presented. It is a code system based on the Dual Parton Model and unifies all features of the DTUNUC-2, DPMJET-II and PHOJET 1.12 event generators. DPMJET-III allows the simulation of hadron-hadron, hadron-nucleus, nucleus-nucleus, photon-hadron, photon-photon and photon-nucleus interactions from a few GeV up to the highest cosmic ray energies.