Hyperon Enhancement in the Dual Parton Model

Details Hyperon Enhancement in the Dual Parton Model Hyperon Enhancement in the Dual Parton Model

2000-07-21

arxiv.org/abs/hep-ph/0007236v1

NewJ.Phys.2:30,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 2 eps-figures

Scientific paper

10.1088/1367-2630/2/1/330

We review the two sources of hyperon enhancement in the dual parton model: strings originating from diquark-antidiquark pairs in the nucleon sea and net baryons containing two or three sea quarks with a yield controlled by the observed stopping. We show that adding final state interactions (including strangeness exchange reactions as well as the inverse reactions required by detailed balance) with a single averaged cross-section $\sigma=0.2$ mb, we can explain the observed hyperon enhancement in PbPb collisions at CERN SPS.

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