Dynamical interpretation of chemical freeze-out in heavy ion collisions

Toneev, V. D.; Cleymans, J.; Nikonov, E. G.; Redlich, K.; Shanenko, A. A.; .

Dynamical interpretation of chemical freeze-out in heavy ion collisions

Authors

Description

It is demonstrated that there exists a direct correlation between chemical freeze-out point and the softest point of the equation of state where the pressure divided by the energy density, $p(ε)/ε$, has a minimum. A dynamical model is given as an example where the passage of the softest point coincides with the condition for chemical freeze-out, namely an average energy per hadron $\approx$ 1 GeV. The sensitivity of the result to the equation of state used is discussed.
10 pages, 2 figures