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arxiv: hep-ph/9909407 · v1 · submitted 1999-09-16 · ✦ hep-ph

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Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)

M. Bleicher , E. Zabrodin , C. Spieles , S.A. Bass , C. Ernst , S. Soff , L. Bravina , M. Belkacem
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H. Weber H. St\"ocker W. Greiner (Frankfurt University LBNL Duke University Moscow State University)
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classification ✦ hep-ph
keywords modelcollisionsenergiesurqmddatahadron-hadronhadronichadrons
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Hadron-hadron collisions at high energies are investigated in the Ultra-relativistic-Quantum-Molecular-Dynamics approach (UrQMD). This microscopic transport model is designed to study pp, pA and A+A collisions. It describes the phenomenology of hadronic interactions at low and intermediate energies ($\sqrt s <5$ GeV) in terms of interactions between known hadrons and their resonances. At high energies, $\sqrt s >5$ GeV, the excitation of color strings and their subsequent fragmentation into hadrons dominates the multiple production of particles in the UrQMD model. The model shows a fair overall agreement with a large body of experimental h-h data over a wide range of h-h center-of-mass energies. Hadronic reaction data with higher precision would be useful to support the use of the UrQMD model for relativistic heavy ion collisions.

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