Equivalent hyperon-nucleon interactions in low-momentum space

Abstract

Equivalent interactions in a low-momentum space for the $\hat{I}›N$, $\hat{I}\pounds N$ and $\hat{I}žN$ 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.

9 pages, 13 figures, accepted for publication in Phys. Rev. C