Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-07-06
Z.Phys. C70 (1996) 507-516
Physics
High Energy Physics
High Energy Physics - Phenomenology
Plain TeX + epsf, 40 pages; 1 Postscript-table and 7 Postscript figures (uuencoded)
Scientific paper
The rapidity distribution of $\Lambda$ and $\bar{\Lambda}$ produced in nucleus-nucleus collisions at CERN energies is studied in the framework of an independent string model - with quark-antiquark as well as diquark-antidiquark pairs in the nucleon sea. It is shown that, besides the $\Lambda$-$\bar{\Lambda}$ pair production resulting from the fragmentation of sea diquarks, final state interactions of co-moving secondaries $\pi + N \to K + \Lambda$ and $\pi + \bar{N} \to K + \bar{\Lambda}$ are needed in order to reproduce the data. Predictions for $Pb$-$Pb$ collisions are presented.
Akil Kouider A.
Capella Antonio
Kaidalov Alexei
Merino Carlos
Thanh Van Tran J.
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