A simple expression for the entropy of a fireball from experimental strange particle ratios

P. Lévai, B. Lukács, J. Zimányi, U. Heinz

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We derive an expression for the specific entropy S/NB in a non-interacting, non-relativistic Boltzmann gas mixture in terms of strange particle ratios like {Mathematical expression}, NK/NΛ and NΛ/NN. Then we investigate the influence of relativistic and quantum statistical effects and the role of hadronic interactions on reconstructing the specific entropy from the particle ratios. Since neglection of the relativistic effects causes the largest corrections, we include them in an improved expression. The resulting formula gives the specific entropy from the observed particle ratios with less than 20% error.

Original languageEnglish
Pages (from-to)77-87
Number of pages11
JournalZeitschrift für Physik A Atomic Nuclei
Volume334
Issue number1
DOIs
Publication statusPublished - Mar 1 1989

Keywords

  • 12.38.Mh
  • 25.70.-z
  • 25.70.Np

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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