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Hydrodynamical model: Initial conditions
For head-on (b=0 fm) AuAu @ 200 GeV, fix :
- t0 = 2R/g = 0.15 fm/c (transit time AuAu). Take into account secondary (“cascading”) g
- s0 ~ 500 fm-3 (reproduce exp. dNch/dη) ⇒ ε0 ∝ s04/3 = 220 GeV/fm3 (max. ε0, source center)
- μB = 25 MeV (as given by experimental hadron ratios at y=0)
For other centralities, use Kolb et al. Glauber prescription:
s0(b) = s0(b=0)∙[0.75 Npart(b)+ 0.25 Ncoll(b)]
End of evolution: Cooper-Frye freeze-out prescription at Tfo = 120 MeV