The Charm and Bottom Hyperons in a Chiral Quark Model

Details The Charm and Bottom Hyperons in a Chiral Quark Model The Charm and Bottom Hyperons in a Chiral Quark Model

1995-09-11

arxiv.org/abs/hep-ph/9509269v2

Nucl.Phys. A603 (1996) 326-344; Erratum-ibid. A620 (1997) 510

Physics

High Energy Physics

High Energy Physics - Phenomenology

Numerical values in Table 3 for negative parity charm cascade state energies & misprint in Table 1 corrected

Scientific paper

10.1016/0375-9474(96)80005-C

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 $\Sigma_c-\Sigma_c^*$ 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 parity excited states and the magnetic moments as well. Corresponding predictions for the B=-1 hyperon states are also given.

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