THE CHARM AND BOTTOM HYPERONS IN A CHIRAL QUARK-MODEL

The spectrum of the C = 1 hyperons is well described by the constituen t quark model, if the fine structure interaction between the light and strange quarks is mediated by the SU(3)(F) octet of light pseudoscala r mesons, which are the Goldstone bosons of the hidden approximate chi ral symmetry of QCD. With the addition of a phenomenological flavor ex change interaction of the same form between the light and the charm qu arks to describe the Sigma(c)-Sigma(c) and Xi(c)(s)-Xi(c)* splittings , the splittings between the C = 1 states fall within 10-30 MeV of the empirical values. Predictions are presented for the lowest negative p arity excited states and the magnetic moments as well. Corresponding p redictions for the B = -1 hyperon states are also given.