Abstract
Within the standard three-quark model of excited baryon resonances we discuss a model which considers one gluon exchange as well as the effects of the confining potential. The latter is assumed universal and scalar but may be non-local (momentum dependent). This leads to an additional type of spin-orbit interactions which can compensate contributions of gluon exchange and explain the general smallness of spin orbit terms. For strange resonances the wave function distortion due to the different quark masses turns out to be very important. The low position of Λ (1405) is a natural consequence in our model.
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