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High Energy Physics - Phenomenology

arXiv:hep-ph/9807346 (hep-ph)
[Submitted on 12 Jul 1998 (v1), last revised 27 Oct 1998 (this version, v3)]

Title:Quark-Gluon Plasma in Pb--Pb 158 A GeV collisions: Evidence from strange particle abundances and the Coulomb effect

Authors:Jean Letessier, Johann Rafelski (LTHE-Paris 7 and Department of Physics, University of Arizona, Tucson, AZ, 85721)
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Abstract: The hadronic particle production data from relativistic nuclear Pb--Pb 158 A GeV collisions are successfully described within the chemical non-equilibrium model, provided that the analysis treats Omega and anti-Omega abundances with care. We further show that there is a subtle influence of the Coulomb potential on strange quarks in quark matter which is also seen in our data analysis, and this Coulomb effect confirms the finding made by chemical analysis in the S--Au/W/Pb 200 A GeV collisions that the hadron particle source is deconfined with respect to strange quark propagation. Physical freeze-out conditions (pressure, specific energy, entropy, and strangeness) are evaluated and considerable universality of hadron freeze-out between the two different collision systems is established.
Comments: 10 pages including one figure, to appear in Acta Phys. Pol. B
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/9807346
  (or arXiv:hep-ph/9807346v3 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/9807346
Journal reference: Acta Phys.Polon. B30 (1999) 153-168

Submission history

From: Johann Rafelski [view email]
[v1] Sun, 12 Jul 1998 03:00:29 UTC (29 KB)
[v2] Mon, 27 Jul 1998 23:54:58 UTC (29 KB)
[v3] Tue, 27 Oct 1998 22:24:02 UTC (27 KB)
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