QGP “EoS” from thermal g & hadron multiplicities (II)

• Different medium EoS (e.g. HRG-like) should result in significantly different geff(dNch/dη,Teff) evolution with AuAu centrality:

• CONCLUSIONS:

• Concurrent reproduction of hydro models of experimental data on: (i) thermal g, and (ii) hadron spectra imposes severe constraints in the initial thermodynamical conditions of the system.

• Combined measurement of (i) thermal g inverse slopes, and (ii) dNch/dη in diff. AuAu centralities provides direct information on the evolution (with T) of the # of degrees of freedom (EoS) of the produced medium