Abstract
Subthreshold kaon production has been studied in symmetric nucleus-nucleus collisions as a function of the nucleus mass, beam energy and centrality. In Au+Au collsions at 1 AGeV theK + multiplicity increases more than linearly with increasing number of participating nucleons. Transport calculations have to assume a soft equation of state in order to reproduce the data. The in-mediumK − cross section measured in Ni+Ni collisions is enhanced by about a factor of 7 as compared to the free cross section when using theK + cross section at equivalent beam energies as a normalization.
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Senger, P., the Kaos Collaboration., Barth, R. et al. Kaon production in hadronic matter. APH N.S., Heavy Ion Physics 4, 317–324 (1996). https://doi.org/10.1007/BF03155627
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DOI: https://doi.org/10.1007/BF03155627