Strangeness enhancement and strangeness suppression in nuclear collisions at 200 GeV/N |
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| Authors: | Helena Bia?kowska Marek Ga?dzicki Waldemar Retyk Ewa Skrzypczak |
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| Institution: | 1. High Energy Department, So?tan Institute for Nuclear Studies, ul. Ho?a 69, PL-00-681, Warsaw, Poland
2. Institute of Experimental Physics, Warsaw University, ul. Ho?a 69, PL-00-681, Warsaw, Poland
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| Abstract: | Data on yields of strange and negative hadrons in full phase space produced in proton-nucleus and central S+S collisions at 200 GeV/nucleon are reviewed. The total number of produced strange and nonstrange valence quark-antiquark pairs is determined on the basis of the hadron multiplicity at freezout. It is shown that the strangeness production factor λ s is increased by a factor of 2 in central S+S collisions, whereas no increase is observed in proton-nucleus collisions. |
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