The role of the chiral phase transition in modelling the kaon to pion ratio

Abstract

A sharp peak in the $K^{+}/{\pi }^{+}$ ratio in relativistic heavy-ion collision is discussed in the framework of the SU(3) Polyakov-loop extended NJL model with vector interaction. In the model, the $K^{+}/{\pi }^{+}$ ratio was calculated along the chiral phase transition line for different values of the vector coupling $g_V$. We showed that the value of the vector coupling had no significant effect on the $K^{+}/{\pi }^{+}$ behaviour.

Comments: 6 pages, 3 figs