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We report on baryon and antibaryon as well as K + and K - production cross sections measured in lead-lead collisions at 158GeV/c per nucleon. The presented data were taken at zero degree production angle with a minimum bias trigger. The measurements covered a wide range of rapidity 1.4<y<6.0. Using a simple thermodynamical and a coalescence model the temperature and the chemical...
We investigate antinuclei production in Pb + Pb interactions at 158 GeV/c per nucleon at zero degree production angle. We quote invariant differential production cross sections for antiprotons and antideuterons. The corresponding antideuteron to antiproton ratio at midrapidity is 4.2 10 -4 . One antihelium-3 nucleus was observed. The results are discussed in the framework of a simple...
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