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Dense medium properties

From data vs. model (pQCD+ non-Abelian parton energy loss) comparison:
- Initial gluon densities:

dNg/dy ~ 1000 [Vitev & Gyulassy]

Opacities:

<n> = L/≈ 3 – 4 [Levai et al.]

Transport coefficients:

<q 0> ~ 14 GeV2/fm

Medium-induced radiative
energy losses:

dE/dx ≈ 0.25 GeV/fm (expanding)

dE/dx|eff ≈ 14 GeV/fm (static source) [X.N.Wang]

Such large opacities imply fast thermalization.

All transport & thermodynam. values imply energy densities well above ecrit QCD