Baryon-baryon interaction with a flip-flop model for quark confinement: The case of color SU(2)

The baryon-baryon interaction with a new type of confinement potential (a flip-flop model) free from the pathology of the color van der Waals force is studied in the framework of the quark-cluster model in the case of color SU(2). For moderate values of the parameter describing the confinement of the ''hidden-color'' part, the confinement potential turns out not to contribute to the scattering so much. The Calilei-invariant part of the spin-orbit interaction arising as a relativistic effect from the confinement potential is also studied in comparison with the one from the OGEP. The former does not contribute significantly between baryons even if its strength is determined so as to cancel the latter in the excited state of a single baryon, which suggests the possibility that the latter is an important source of the baryon-baryon spin-orbit interaction. Similar results are expected for the more realistic case of color SU(3). (orig.)