Centrality dependence of the N(Omega)/N(phi) ratios and phi v(2) - a test of thermalization in Au plus Au collisions at RHIC

摘要

We present the centrality dependence of the N( Omega)/ N( phi) ratios and phi upsilon(2) measured in Au+Au collisions at v root(NN)-N-S = 200 GeV by the STAR experiment at RHIC. The results are compared to measurements of other identified particles and recombination model expectations in order to gain insight into the partonic collectivity and possible thermalization of the produced medium.