The role of the chiral phase transition in modelling the kaon to pion ratio
A. V. Friesen+, Yu. L. Kalinovsky+*, V. D. Toneev+
+Joint Institute for Nuclear Research, 141980 Dubna, Russia
*State University "Dubna", 141982 Dubna, Russia
Abstract
A sharp peak in the K+/π+ ratio in relativistic heavy-ion
collision is discussed in the framework of the SU(3) Polyakov-loop extended
Nambu-Jona-Lasinio
model with vector interaction. In the model, the K+/π+ ratio was
calculated along the chiral phase transition line for different values of the
vector coupling gV. We showed that the value of the vector coupling had no
significant effect on the K+/π+ behaviour.