Abstract
We use the quantum molecular dynamics model based on the covariant kaon dynamics to investigate the transverse kinematical energy spectra of K + mesons from 58 Ni + 58 Ni collisions at 1.93 AGeV, and discuss the influence of the K+ in-medium potential on its transverse kinematical energy spectrum. We observe that the KaoS data can only be reasonably described by calculated results with a repulsive K + N potential. This indicates that one can extract the information on the K + in-medium potential in a nuclear medium from the analysis of the transverse kinematical energy spectra of K + mesons. We find that the transverse kinematical energy spectrum of K + mesons is also a sensitive observable to probe the nuclear equation of state.
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