The QCD Phase Diagram from Statistical Model Analysis

Understand

In high multiplicity nucleus-nucleus collisions baryon-antibaryon annihilation and regeneration occur during the final hadronic expansion phase, thus distorting the initial equilibrium multiplicity ratios.

• We quantify the modifications employing the hybrid UrQMD transport model and apply them to the grand canonical partition functions of the Statistical Hadronization Model(SHM).
• We analyze minimum bias and central Pb+Pb collision data at SPS and LHC energy.
• We explain the Pion to Proton ratio puzzle.