RHIC=CGC+hydro+jet+cascade+ReCo?

There are several important findings in relativistic heavy ion collisions at BNL-RHIC. According to the STAR white paper (see also, T.Hallman, talk at ICHEP2004, you can find his presentation file at http://ichep04.ihep.ac.cn/2_heavy_ion.htm), these are called "five pillars at RHIC":

(1) The relative yield of produced hadrons suggests chemical equilibrium of the system,
(2) Large magnitude of v2 and its mass-splitting behavior of v2(pT,m) are consistent with ideal hydrodynamic calculations in low pT region,
(3) Scaling properties of v2(pT) in the intermediate pT region, i.e., v2(pT)/n is represented by a universal function of pT/n, where n is the number of constituent quark,
(4) Suppression in single hadron spectra at high pT and disappearance of away-side peak in di-hadron spectra indicate jet quenching phenomena, i.e., hard jets lose their energies in traversing dense (possibly partonic) medium, and(5) Centrality dependence of particle yields is consistent with the Color Glass Condensate picture.

Unfortunately, five distinct models are invoked to analyze these data. Each model has its proper parameter to reproduce the experimental data. I show some discrepancies of the parameters among these models. After that, I emphasize the importance of a unified approach for dynamical modeling in relativistic heavy ion collisions and show you a first step towards a comprehensive understanding of relativistic heavy ion collisions (and hopefully towards making a case for the discovery of the QGP!).