Production and rescattering of strange baryons at SPS energies in a transport model with hadron potentials

Abstract

A mean-field potential version of the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model is used to investigate the production of strange baryons, especially the $\Lambda$s and $\overline{\Lambda }$s, from heavy ion collisions at SPS energies. It is found that, with the consideration of both formed and pre-formed hadron potentials in UrQMD, the transverse mass and longitudinal rapidity distributions of experimental data of both $\Lambda$s and $\overline{\Lambda }$s can be quantitatively explained fairly well. Our investigation also shows that both the production mechanism and the rescattering process of hadrons play important roles in the final yield of strange baryons.

15 pages, 7 figures

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Cited by in corpus (5)

• Effects of a phase transition on two-pion interferometry in heavy-ion collisions at $\sqrt{s_{\mathrm{NN}}}=2.4-7.7$ GeV
• Rapidity distribution of protons from the potential version of UrQMD model and the traditional coalescence afterburner
• Helium-3 production from Pb+Pb collisions at SPS energies with the UrQMD model and the traditional coalescence afterburner
• Elliptic flow splitting between protons and antiprotons from hadronic potentials
• An explanation of the elliptic flow difference between proton and anti-proton from the UrQMD model with hadron potentials