Hypertriton as a test of theoretical hyperon-nucleon potentials

A separable potential approximation to recent meson theoretic hyperon-nucleon potentials is made such that the low energy scattering parameters are reproduced. The resulting charge asymmetric potentials describing the $\Lambda -p$ and $\Lambda -n$ singlet and triplet interactions are used in a Faddeev-type calculation of the hypertriton binding energy. One particular one-boson exchange potential model, having effective ranges greater than 3 fm, gives a reasonable binding.