Transport model study of nuclear stopping in heavy ion collisions over an energy range from 0.09A GeV to 160A GeV

Details Transport model study of nuclear stopping in heavy ion collisions over an energy range from 0.09A GeV to 160A GeV Transport model study of nuclear stopping in heavy ion collisions over an energy range from 0.09A GeV to 160A GeV

2010-02-26

arxiv.org/abs/1002.4905v1

Phys.Rev.C81:034913,2010

Physics

Nuclear Physics

Nuclear Theory

15 pages, 7 figures

Scientific paper

10.1103/PhysRevC.81.034913

Nuclear stopping in the heavy ion collisions over a beam energy range from SIS, AGS up to SPS is studied in the framework of the modified UrQMD transport model, in which mean field potentials of both formed and "pre-formed" hadrons (from string fragmentation) and medium modified nucleon-nucleon elastic cross sections are considered. It is found that the nuclear stopping is influenced by both the stiffness of the equation of state and the medium modifications of nucleon-nucleon cross sections at SIS energies. At the high SPS energies, the two-bump structure is shown in the experimental rapidity distribution of free protons, which can be understood with the consideration of the "pre-formed" hadron potentials.

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