Statistical hadronization model for heavy-ion collisions in a few GeV energy regime
Abstract
We show that the transverse-mass and rapidity spectra of protons and pions produced in Au-Au collisions at sqrt(sNN) = 2.4 GeV can be well reproduced in a thermodynamic model assuming single freeze-out of particles from a spherically symmetric hypersurface. This scenario corresponds to a physical picture used by Siemens and Rasmussen in the original formulation of the blast-wave model. Our framework modifies and extends this approach by incorporation of a Hubble-like expansion of QCD matter and inclusion of resonance decays. In particular, the Delta(1232) resonance is taken into account, with a width obtained from the virial expansion. Altogether, our results bring evidence for substantial thermalization of the matter produced in heavy-ion collisions in a few GeV energy regime and its nearly spherical expansion.
Cite
@article{arxiv.2003.12992,
title = {Statistical hadronization model for heavy-ion collisions in a few GeV energy regime},
author = {Sz. Harabasz and W. Florkowski and T. Galatyuk and M. Gumberidze and R. Ryblewski and P. Salabura and J. Stroth},
journal= {arXiv preprint arXiv:2003.12992},
year = {2021}
}
Comments
published version