Equivalent hyperon-nucleon interactions in low-momentum space

TL;DR

This paper constructs low-momentum hyperon-nucleon interactions using different theoretical models to understand baryon-baryon interactions in the strangeness sector, highlighting model dependence due to limited experimental data.

Contribution

It compares equivalent hyperon-nucleon interactions derived from the SU6 quark model and Nijmegen OBEP models in low-momentum space, emphasizing model dependence.

Findings

Equivalent interactions are model dependent after removing high-momentum components.

Study provides insights into baryon-baryon interactions in the strangeness sector.

Highlights the importance of theoretical models due to limited experimental data.

Abstract

Equivalent interactions in a low-momentum space for the $\Lambda N$, $\Sigma N$ and $\Xi N$ interactions are calculated, using the SU$_6$ quark model potential as well as the Nijmegen OBEP model as the input bare interaction. Because the two-body scattering data has not been accumulated sufficiently to determine the hyperon-nucleon interactions unambiguously, the construction of the potential even in low-energy regions has to rely on a theoretical model. The equivalent interaction after removing high-momentum components is still model dependent. Because this model dependence reflects the character of the underlying potential model, it is instructive for better understanding of baryon-baryon interactions in the strangeness sector to study the low-momentum space $YN$ interactions.