Sideward flow of K+ mesons in Ru+Ru and Ni+Ni reactions near threshold
arXiv:nucl-ex/0006004 · doi:10.1016/S0370-2693(00)00712-7
Abstract
Experimental data on K+ meson and proton sideward flow measured with the FOPI detector at SIS/GSI in the reactions Ru+Ru at 1.69 AGeV and Ni+Ni at 1.93 AGeV are presented. The K+ sideward flow is found to be anti-correlated (correlated) with the one of protons at low (high) transverse momenta. When compared to the predictions of a transport model, the data favour the existence of an in-medium repulsive K+ nucleon potential.
16 pages Revtex, 3 ps-figures, submitted to Phys. Lett. B