Unified description of light- and strange-baryon spectra
L. Ya. GlozmanInstitute for Theoretical Physics, University of Graz, A-8010 Graz, AustriaW. PlessasInstitute for Theoretical Physics, University of Graz, A-8010 Graz, AustriaK. VargaInstitute of Nuclear Research, Hungarian Academy of Sciences, H-4001 Debrecen, HungaryR. F. WagenbrunnInstitute for Theoretical Physics, University of Graz, A-8010 Graz, Austria
1998en
ABI
Abstract
We present a chiral constituent-quark model for light and strange baryons providing a unified description of their ground states and excitation spectra. The model relies on constituent quarks and Goldstone bosons arising as effective degrees of freedom of low-energy QCD from the spontaneous breaking of chiral symmetry. The spectra of the three-quark systems are obtained from a precise variational solution of a Schr\"odinger-type equation with a semirelativistic Hamiltonian. The theoretical predictions are found to be in close agreement with experiment.
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