Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-08-27
Phys.Rev.C57:922-926,1998
Physics
Nuclear Physics
Nuclear Theory
16 pages, using RevTex, 6 PS-Figures
Scientific paper
10.1103/PhysRevC.57.922
The importance of a isospin dependent nuclear mean field (IDMF) in regard to the pion production mechanism is studied for the reaction $Au+Au$ at 1 GeV/nucleon using the Quantum Molecular Dynamics (QMD) model. In particular, the effect of the IDMF on pion spectra and the charged pion ratio are analyzed. It is found that the inclusion of a IDMF considerably suppresses the low$-p_t$ pions, thus, leading to a better agreement with the data on pion spectra. Moreover, the rapidity distribution of the charged pion ratio appears to be sensitive to the isospin dependence of the nuclear mean field.
Faessler Amand
Fuchs Ch.
Kosov Daniel S.
Uma Maheswari V. S.
Wang Zhao-Sheng
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