2002/01/31 by C. Fuchs, Fuchs, C., Amand Faessler +9
Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/0201088
8 pages, 5 figures, uses iopams.sty; Talk at the 6th International Conference on Strange Quarks in Matter 2001(SQM2001), Frankfurt, Germany, 25-29 Sep 2001; to appear in JPG
arxiv created 2002/01/31 · arxiv updated 2009/12/01
The dependence of K+ production on the nuclear equation of state is investigated in heavy ion collisions. An increase of the excitation function of K+ multiplicities obtained in heavy (Au+Au) over light (C+C) systems when going far below threshold which has been observed by the KaoS Collaboration strongly favours a soft equation of state. This observation holds despite of the influence of an in-medium kaon potential predicted by effective chiral models which is necessary to reproduce the experimental K+ yields. Phase space effects are discussed with respect to the K+ excitation function.