The QCD Phase Diagram from Statistical Model Analysis
Abstract
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. We also reproduce the deuteron to proton ratio at LHC energy by the SHM, and by UrQMD after attaching a phase space coalescence process. We discuss the resulting (T,) diagram.
Cite
@article{arxiv.1811.07766,
title = {The QCD Phase Diagram from Statistical Model Analysis},
author = {Reinhard Stock and Francesco Becattini and Marcus Bleicher and Jan Steinheimer},
journal= {arXiv preprint arXiv:1811.07766},
year = {2019}
}
Comments
Quark Matter 2018 proceedings. Talk presented by Reinhard Stock. Accepted version