Particle ratios from central Pb + Pb collisions at the CERN SPS

研究成果: Article査読

30 被引用数 (Scopus)

抄録

We will address the physics of K-/K+ and p̄/p ratios measured in 158 A GeV Pb + Pb collisions as a function of centrality and transverse momentum. We observe little significant centrality dependence in neither K-/K+ nor p̄/p ratios and they are almost constant as a function of PT. In addition to the chemical freeze-out temperature Tch, we extract the chemical potentials for both light and strange quarks (μq and μs) by comparing the present data with simple model predictions. Tch is greater than the thermal freeze-out temperature which is extracted from the transverse momentum distribution of charged hadrons.

本文言語English
ページ(範囲)1865-1871
ページ数7
ジャーナルJournal of Physics G: Nuclear and Particle Physics
23
12
DOI
出版ステータスPublished - 1997 12
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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