Strange mesons in dense nuclear matter

Abstract

Experimental data on the production of kaons and antikaons in heavy ion collisions at relativistic energies are reviewed with respect to in-medium effects. The $K^{-}/K^{+}$ ratios measured in nucleus-nucleus collisions are 1 - 2 orders of magnitude larger than in proton-proton collisions. The azimuthal angle distributions of $K^{+}$ mesons indicate a repulsive kaon-nucleon potential. Microscopic transport calculations consistently explain both the yields and the emission patterns of kaons and antikaons when assuming that their properties are modified in dense nuclear matter. The $K^{+}$ production excitation functions measured in light and heavy collision systems provide evidence for a soft nuclear equation-of-state.

16 pages, 12 figures, Invited talk at the 7. international Conference Nucleus-Nucleus Collisions, Strasbourg, July 3-7, 2000

Cited by in corpus (8)

• Strange Quark Matter and Compact Stars
• Close-to-threshold Meson Production in Hadronic Interactions
• Ultra-Dense Neutron Star Matter, Strange Quark Stars, and the Nuclear Equation of State
• $K^{-}/K^{+}$ ratio in heavy-ion collisions at GSI with an antikaon self-energy in hot and dense matter
• Effects of nuclear symmetry energy on eta meson production and its rare decay to the dark U-boson in heavy-ion reactions
• Strangeness in Neutron Stars
• In-medium effects on the $K^{-}/K^{+}$ ratio at GSI
• K^-/K^+ ratio at GSI in hot and dense matter