Kaon and hyperon production in antiproton-induced reactions on nuclei

Abstract

We study the strangeness production in antiproton-nucleus collisions at the beam momenta from 200 MeV/c to 15 GeV/c within the Giessen Botzmann-Uehling-Uhlenbeck (GiBUU) transport model. The GiBUU model contains a very detailed description of the underlying antinucleon-nucleon cross sections, in-particular, of the strangeness production channels. We compare our calculations with the bubble chamber data on Λ- and K^0_S-production in antiproton-nucleus collisions and with the earlier intranuclear cascade calculations. The contributions of the various partial channels to the hyperon production are reported and systematic differences with experiment are discussed. The possible formation of the bound Λ- and ΛΛ-nucleus systems is also considered. Finally, the results on the Ξ-hyperon production are presented in view of the forthcoming experiments with antiproton beams at FAIR.

44 pages, 15 figures, (new Figs. 5,9,11,12), accepted in Phys. Rev. C

References in corpus (5)

• PYTHIA 6.4 Physics and Manual
• Transport-theoretical Description of Nuclear Reactions
• In-medium nuclear interactions of low-energy hadrons
• Dynamical simulation of bound antiproton-nuclear systems and observable signals of cold nuclear compression
• Antiproton-nucleus collisions simulation within a kinetic approach with relativistic mean fields

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