Regularized zero-range model and an application to the triton and the hypertriton Original Research Article

We examine the regularized zero-range model in an application to three-fermion systems — the triton and the hypertriton. We consider bound states and low-energy neutron–deuteron and lambda–deuteron scattering. The model is shown to provide an adequate quantitative description of these system on a par with finite-range potential models. The well-known correlation between the doublet nd scattering length and the triton binding energy (Phillips line) finds a natural explanation within the model.