Nonlinear Effects on Effective Mass of Kaon and Antikaon Mesons

Key words: 
• kaon meson /
• effective mass /
• σ-ω-ρ model /
• nuclear matter /
•  /

Abstract: We investigate the effect of the nuclear vector density ρ_B and the scalar density ρ_S on in-medium kaon and antikaon effective masses. Based on nonlinear σ-ω-ρ model in the relativistic mean-field approximation, we obtained the relation between the two nuclear densities both σ-ω model and σ-ω-ρ model. By (using) the relation, we improve the dependence of in-medium kaon and antikaon effective masses. We also studied the differences of kaon and antikaon effective mass abtained by...