Abstract:
The Ultra-relativistic Quantum Molecular
Dynamics model
(UrQMD) is used to study global observables
in central
reactions of Au+Au at $\sqrt{s}=200$ AGeV
(RHIC). Strong
stopping governed by massive particle
production is
predicted if secondary interactions are taken
into account.
The underlying string dynamics and the early
hadronic
decoupling implies only small transverse
expansion rates.
However, rescattering with mesons is found to
act as a
source of pressure leading to additional flow
of baryons and
kaons, while cooling down pions.