Freeze-Out Parameters in Heavy-Ion Collisions at AGS, SPS, RHIC, and LHC Energies

Figure 1

Dependence on the Choice of Ensemble. Thermal parameters (a) , (b) (, , and ), (c) , and (d) radius, plotted versus collision energy, extracted within the GCE and SCE ensembles with 1CFO as the freeze-out scheme. The dotted curves in the figures represent parameterizations from [81, 82]. The choice of ensemble does not seem to influence the values of the extracted thermal parameters. However, the , which is similar for SPS and higher energies, is significantly smaller for SCE at the AGS energies. This is mainly because in the SCE there is one less free parameter.

(a)

(b)

(c)

(d)