Chemical Nonequilibrium in High Energy Nuclear Collisions

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dc.creatorLetessier, Jean
dc.creatorRafelski, Johann
dc.date1998-10-12
dc.date1998-11-09
dc.date.accessioned2026-07-07T10:52:56Z
dc.date.available2026-07-07T10:52:56Z
dc.descriptionStrange particles produced in S-Au/W/Pb 200 A GeV and Pb-Pb 158 A GeV reactions are described invoking final hadronic phase space in thermal equilibrium, but allowing chemical non-equilibrium. Several sets of statistical freeze-out parameters are obtained for each system, invoking different models of dense matter. We show that only when allowing for strange and non-strange flavor abundance non-equilibrium, a statistically significant description of the experimental results is obtained. Physical properties of the fireball at chemical freeze-out condition are evaluated and considerable universality of hadron freeze-out between the two different collision systems is established. The relevance of the Coulomb effect in the highly charged Pb-Pb fireballs for the chemical analysis are discussed. The influence of explosive collective matter flow is also described.
dc.descriptionPresented at the International Conference Strangeness in Quark Matter held in Padova, July 1998 To appear in: Journal of Physics G 16 pages incl. one figure; v2: minor typos corrected
dc.identifierhttps://arxiv.org/abs/hep-ph/9810332
dc.identifierhttp://arxiv.org/abs/hep-ph/9810332
dc.identifierJ.Phys.G25:295-309,1999
dc.identifierdoi:10.1088/0954-3899/25/2/018
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185322
dc.subjectHigh Energy Physics - Phenomenology
dc.titleChemical Nonequilibrium in High Energy Nuclear Collisions
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