dorsal/arxiv
View SchemaChemical freezeout in relativistic A+A collisions: is it close to the QGP?
| Authors | M. I. Gorenstein, H. Stoecker, G. D. Yen, S. N. Yang, W. Greiner |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9711055 |
| URL | https://arxiv.org/abs/nucl-th/9711055 |
| DOI | 10.1088/0954-3899/24/9/010 |
| Journal | J.Phys. G24 (1998) 1777-1784 |
Abstract
Preliminary experimental data for particle number ratios in the collisions of Au+Au at the BNL AGS (11$A$ GeV/$c$) and Pb+Pb at the CERN SPS (160$A$ GeV/$c$) are analyzed in a thermodynamically consistent hadron gas model with excluded volume. Large values of temperature, T=140--185 MeV, and baryonic chemical potential, $\mu_b=590$--270 MeV, close to the boundary of the quark-gluon plasma phase are found from fitting the data. This seems to indicate that the energy density at the chemical freezeout is tremendous which would be indeed the case for the point-like hadrons. However, a self-consistent treatment of the van der Waals excluded volume reveals much smaller energy densities which are very far below a lowest limit estimate of the quark-gluon plasma energy density.
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"abstract": "Preliminary experimental data for particle number ratios in the collisions of\nAu+Au at the BNL AGS (11$A$ GeV/$c$) and Pb+Pb at the CERN SPS (160$A$ GeV/$c$)\nare analyzed in a thermodynamically consistent hadron gas model with excluded\nvolume. Large values of temperature, T=140--185 MeV, and baryonic chemical\npotential, $\\mu_b=590$--270 MeV, close to the boundary of the quark-gluon\nplasma phase are found from fitting the data. This seems to indicate that the\nenergy density at the chemical freezeout is tremendous which would be indeed\nthe case for the point-like hadrons. However, a self-consistent treatment of\nthe van der Waals excluded volume reveals much smaller energy densities which\nare very far below a lowest limit estimate of the quark-gluon plasma energy\ndensity.",
"arxiv_id": "nucl-th/9711055",
"authors": [
"M. I. Gorenstein",
"H. Stoecker",
"G. D. Yen",
"S. N. Yang",
"W. Greiner"
],
"categories": [
"nucl-th"
],
"doi": "10.1088/0954-3899/24/9/010",
"journal_ref": "J.Phys. G24 (1998) 1777-1784",
"title": "Chemical freezeout in relativistic A+A collisions: is it close to the QGP?",
"url": "https://arxiv.org/abs/nucl-th/9711055"
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