Unitary symmetry in baryon-baryon scattering. Pt. 2

In a number of papers Carl Dover and I have studied SU(3) symmetry in the baryon-baryon interaction. Of course, SU(3) symmetry is broken. The mass of the members of the baryon octet (or the meson octet), the nucleon, the Σ and Λ and Ξ differ. But beyond this the baryon-baryon interaction as is well known also shows symmetry breaking. For example, the np system in the triplet state is bound while the Λp system which belongs to the same representation (anti 10) is not. Our concern has been the structure of the symmetry breaking. A particularly important question (but not the only one) asks if there are non-vanishing matrix elements of the baryon-baryon interaction between different SU(3) states. That is: Is the symmetry breaking diagonal. In the SU(2) case - that of nucleons - isospin symmetry of the nucleon-nucleon interaction is broken by the Coulomb interaction. The main effect of this symmetry breaking in nuclei is to change the nuclear energy. However, matrix elements of the Coulomb interaction between states of different isotope spin are small. The consequence of this structure is the existence of isobar analog states. Is a similar structure correct for the SU(3) baryon-baryon interaction. Do SU(3) analog states exist. (orig.)