Abstract
We calculate the K +-production cross section in 197Au+ 197Au collisions at 1 GeV/u in the framework of quantum molecular dynamics (QMD). The Skyrme potentials, with parameters chosen to generate the soft and hard nuclear equations of state, are used in the propagation of nucleons within QMD. Our calculations show that the kaons are produced from an earlier stage of the collisions and mainly through a two-step process. Theoretical predictions with the soft equation of state are in good agreement with the experimental data from SIS at GSI. The results for soft and hard equations of state differ by approximately a factor 2 to 3.
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