Strangeness production in nuclear interactions at 200 AGeV and the number of nucleon-nucleon collisions

Details Strangeness production in nuclear interactions at 200 AGeV and the number of nucleon-nucleon collisions Strangeness production in nuclear interactions at 200 AGeV and the number of nucleon-nucleon collisions

1997-11-11

arxiv.org/abs/hep-ph/9711285v1

Eur.Phys.J.C5:135-141,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages,3 figures

Scientific paper

10.1007/s100520050255

Data on mean numbers of $\Lambda$, $\bar\Lambda$, K's and on the total number $$ of pairs of strange valence quarks in final state hadrons in hadronic and nuclear collisions at CERN- SPS energies are studied as a function of the mean number $$ of nucleon- nucleon collisions. Results give indications of an almost linear dependence over most of the region of $$. This in turn points out to strangeness being produced mostly in the central rapidity region of nucleon- nucleon collisions by a mechanism similar to a hard or semi- hard process. The available data are extrapolated to Pb+Pb interactions by two simple models, leading to $_{Pb+Pb}\approx 300\pm 30 $. Observations exceeding these values of $_{Pb+Pb}$ would give evidence of the onset of a new dynamical regime in Pb+Pb interactions.

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