Speaker
Alexandra Friesen
(Joint Institute for Nuclear Research)
Description
A sharp peak in the ratio of strange to non-strange mesons 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. We present a comparison with the experimental pattern of kaon-to-pion ratios within the Beth-Uhlenbeck approach and using $x$-dependent pion and strange quark potentials. The brief discussion of the possibility to describe the $\Lambda/\pi^-$ ratio in the frame of PNJL model is presented.
Primary author
Alexandra Friesen
(Joint Institute for Nuclear Research)
