Universal QGP Hadronization Conditions at RHIC and LHC

Abstract. We address the principles governing QGP hadronization and particle produc-tion in relativistic heavy-ion collisions. We argue that chemical non-equilibrium is re-quired and show that once this condition is assumed a very good description of hadron production in collider RHIC and LHC heavy ion experiments follows. We present re-sults of our analysis as a function of centrality. Comparing most extreme experimental conditions we show that only the reaction volume and degree of strangeness phase space saturation change. We determine the universal QGP fireball hadronization conditions. 1 Hadronization of quark-gluon plasma In the hot primordial Universe free color charged quarks and gluons were present in the deconfined phase of matter, the quark-gluon plasma (QGP). In the laboratory heavy ion collider RHIC and LHC experiments we recreate QGP and study this 5th state of matter. The process QGP undergoes while freezing the color degree of freedom is called ‘hadronization’: all quarks bind into colorless combi-nations of three quarks, baryons (and of antiquarks, antibaryons) and quark-antiquark states, mesons. Gluons are either absorbed in the process balancing color charge, or fuse into quark pairs. In laboratory collider experiments the Lorentz contracted heavy ion pancakes encounter eac