ar X iv : h ep - p h / 95 09 26 9 v 2 2 M ay 1 99 7 The Charm and Bottom Hyperons in a Chiral Quark Model

The spectrum of the C = 1 hyperons is well described by the constituent quark model, if the fine structure interaction between the light and strange quarks is mediated by the SU(3)F octet of light pseudoscalar mesons, which are the Goldstone bosons of the hidden approximate chiral symmetry of QCD. With the addition of a phenomenological flavor exchange interaction of the same form between the light and the charm quarks to describe the Σc − Σc and Ξc − Ξc splittings, the splittings between the C = 1 states fall within 10-30 MeV of the empirical values. Predictions are presented for the lowest negative parity excited states and the magnetic moments as well. Corresponding predictions for the B = −1 hyperon states are also given. Preprint HU–TFT–95–53, hep-ph 9509269