Relativistic Hydrodynamics in Heavy-Ion Collisions: General Aspects and Recent Developments

Figure 4

Extracted values of for Au-Au collision at  GeV (a) and for Pb-Pb collision at  TeV (b) by different model calculations using different experimental observables. The solid vertical line at the left shows the lower limit of in unit of [30]. For comparison we have also shown of Helium at (dashed vertical line on the right).

(a)

(b)