Speaker
Prof.
Johann Rafelski
Description
We study properties of the expanding quark-gluon plasma (QGP) fireball and the principles governing QGP hadronization, employing the statistical hadronization model (SHM) description of particle production in relativistic heavy-ion collisions. We show that the chemical non-equilibrium model gives a very good description of the hadron production in entire energy range including the LHC Pb-Pb collisions at 2.76 TeV. The SHM model parameters assume expected values, and the quark-gluon plasma fireball beaks-up at a universal hadronization condition. The fireball bulk properties to vary significantly are the reaction volume and degree of strangeness phase space saturation. There are small variations of energy density and pressure of the fireball at hadronization, compatible with the expected expansion dynamics of the fireball.
