Production of fragments with and without strangeness within a combined BUU+SMM approach

TL;DR

This paper develops a hybrid model combining transport and statistical methods to study hypernuclei production, successfully describing fragment data and extending to include strangeness, with predictions for future hypernuclear experiments.

Contribution

It introduces a novel combined BUU+SMM approach that incorporates strangeness degrees of freedom for hypernuclei production in heavy-ion and proton reactions.

Findings

The hybrid model accurately reproduces fragment multiplicities and spectra.

Including strangeness via phase-space coalescence extends the model's applicability.

Predictions for hypernuclear spectra and cross sections are provided for upcoming experiments.

Abstract

The formation of hypernuclei in hadron-induced reactions and in heavy-ion collisions within a combination of a covariant transport model and a statistical fragmentation approach is investigated. We study the applicability and limitations of such a hybrid approach by comparing fragmentation data in heavy-ion collisions and proton induced reactions. It turns out that the combined approach describes fairly well multiplicities and momentum spectra of fragments. We thus extend the model by including strangeness degrees of freedom in the fragmentation process, modeled by a phase-space coalescence method. We provide theoretical predictions on spectra and on inclusive cross sections of light hypernuclei for the future experiments on hypernuclear physics at the new GSI facility.