Abstract
The results of the microscopic transport calculations of -nucleus interactions within a GiBUU model are presented. The dominating mechanism of hyperon production is the strangeness exchange processes → γπ and → ΞK. 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 -nucleus annihilation. The production of the double Λ-hypernuclei by Ξ− interaction with a secondary target is calculated.
Highlights
The interest to strangeness production in p-nucleus interactions was originally related to the mechanism of strangeness enhancement in a quark-gluon plasma (QGP) proposed by Rafelski and Muller in early 80’s for relativistic heavy-ion collisions [1]
The following-up theoretical analyses within the intranuclear cascade (INC) models [6,7] seem to support the usual mechanism of strangeness production in terms of binary hadron-hadron collisions, the collected experimental data constitute a very useful base for testing newly developing theoretical models needed in view of forthcoming experiments with antiproton beams at FAIR
In this talk we discuss our recent results of the microscopic transport calculations of the KS0, Λ- and Ξ−-hyperon and double-Λ hypernuclei production based on the Giessen BoltzmannUehling-Uhlenbeck (GiBUU) transport model
Summary
The interest to strangeness production in p-nucleus interactions was originally related to the mechanism of strangeness enhancement in a quark-gluon plasma (QGP) proposed by Rafelski and Muller in early 80’s for relativistic heavy-ion collisions [1]. The following-up theoretical analyses within the intranuclear cascade (INC) models [6,7] seem to support the usual mechanism of strangeness production in terms of binary hadron-hadron collisions, the collected experimental data constitute a very useful base for testing newly developing theoretical models needed in view of forthcoming experiments with antiproton beams at FAIR.
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