Quark-gluon plasma in PB-PB 158 a GEV collisions: Evidence from strange particle abundances and the coulomb effect

Jean Letessier, Jan Rafelski

Research output: Contribution to journalArticle

13 Scopus citations

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 Ω and Ω̄ 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.

Original languageEnglish (US)
Pages (from-to)153-168
Number of pages16
JournalActa Physica Polonica B
Volume30
Issue number1
StatePublished - Dec 1 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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