Recent Results From Experiment Na52 At The Cern Sps

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS(1997)

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摘要
We present recent results of the NA52 experiment on the strangelet search and on particle, antiparticle, light nuclei and antinuclei production in minimum bias Pb+Pb collisions at 158 A GeV and zero production angle. Upper limits for the production of strangelets are given and one candidate found using less stringent lifetime cuts is discussed. The rapidity dependence of K+(K-), p((p) over bar), d((d) over bar), t and He-3(<(He-3)over bar>) as well as first results on He-4, Li-6 and Be-7 at forward rapidities are presented. First results on the centrality dependence of the (p) over bar/p ratio are reported. Within the framework of a thermodynamical and a coalescence model, the temperature, the baryon-and strangeness-chemical potentials and the radius of the particle source at midrapidity have been estimated.
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chemical potential,thermodynamics
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