Production of multi-strangeness hypernuclei and the YN-interaction

TL;DR

This paper explores how different hyperon-nucleon interaction models affect the formation of multi-strangeness hypernuclei in antiproton and Xi interactions, highlighting the potential for experimental observation at FAIR.

Contribution

It introduces a novel analysis of YN-interaction models' impact on strangeness dynamics in reactions relevant for the extsc{panda} experiment, using transport simulations.

Findings

Strong sensitivity of hypernuclei formation to YN-interaction models

Prediction of observable Xi-hypernuclei formation

Implications for future experiments at FAIR

Abstract

We investigate for the first time the influence of hyperon-nucleon (YN) interaction models on the strangeness dynamics of antiproton- and $\Xi$-nucleus interactions. Of particular interest is the formation of bound multi-strangeness hypermatter in reactions relevant for \panda. The main features of two well-established microscopic approaches for YN-scattering are first discussed and their results are then analysed such that they can be applied in transport-theoretical simulations. The transport calculations for reactions induced by antiproton beams on a primary target including also the secondary cascade beams on a secondary target show a strong sensitivity on the underlying YN-interaction. In particular, we predict the formation of $\Xi$-hypernuclei with an observable sensitivity on the underlying $\Xi$N-interaction. We conclude the importance of our studies for the forthcoming research plans at FAIR.