First page Back Continue Last page Overview Graphics
Theory vs. data (I): final-state very dense medium
Medium properties according to “jet quenching” models:
dNg/dy ~ 1100 [Vitev & Gyulassy]
<n> = L/≈ 3 – 4 [Levai et al.]
<q 0> ~ 3.5 GeV/fm2 [BDMPS, F.Arleo ]
T ~ 0.4 GeV [G. Moore]
- 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:
(i) large rescattering: thermalization, (ii) energy densities εcrit QCD >> 1 GeV/fm3