Strangeness production in antiproton-nucleus annihilation

Abstract

The results of the microscopic transport calculations of p̄-nucleus interactions within a GiBUU model are presented. The dominating mechanism of hyperon production is the strangeness exchange processes K̄N → Yπ and K̄N → ξ K. The calculated rapidity spectra of Ξ hyperons are significantly shifted to forward rapidities with respect to the spectra of S = -1 hyperons. We argue that this shift should be a sensitive test for the possible exotic mechanisms of p̄-nucleus annihilation. The production of the double δ-hypernuclei by Ξ- interaction with a secondary target is calculated.