Abstract
We present recent results obtained with the extended soft-core (ESC) interactions. This ESC-model, henceforth called ESC03, describes nucleon–nucleon ( NN), hyperon–nucleon ( YN), and hyperon–hyperon ( YY), in a unified manner using (broken) SU f ( 3 ) -symmetry. Novel ingredients are the inclusion of (i) the axial-vector meson potentials, (ii) a zero in the scalar-meson form-factors. With these innovations, it proved possible for the first time to keep the parameters of the model closely to the predictions of the P 0 3 quark-pair-creation model (QPC). This is the case for the meson–baryon coupling constants and F / ( F + D ) -ratio's as well. Also, the YN and YY results for this model are rather excellent.
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