HYPERON PRODUCTION IN PROTON-LEAD AND LEAD-LEAD COLLISIONS AT 158 GeV/c PER NUCLEON
نویسنده
چکیده
for the WA97 collaboration) The WA97 experiment studies the production of strange and multistrange particles in Pb{Pb and p{Pb collisions at 158 GeV/c per nucleon. Recent results on and production ratios and transverse mass distributions are reported and compared with those obtained by WA85 and WA94 experiments. A signiicant enhancement of the // ratio has been observed when going from nucleon-Nucleus to Nucleus-Nucleus reactions.
منابع مشابه
ar X iv : n uc l - ex / 9 81 00 05 v 1 7 O ct 1 99 8 Ξ and Ξ Production in 158 GeV / Nucleon Pb + Pb Collisions ( The NA
We report measurements of Ξ and Ξ + hyperon absolute yields as a function of rapidity in 158 GeV/c Pb+Pb collisions. At midrapidity, dN dy = 2.29± 0.12 for Ξ, and 0.52 ± 0.05 for Ξ+, leading to the ratio of Ξ+/Ξ−=0.23±0.03. Inverse slope parameters fitted to the measured transverse mass spectra are of the order of T ≈ 300 MeV near mid-rapidity. The estimated total yield of Ξ particles in Pb+Pb ...
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