Extended Goldstone-Boson-Exchange Constituent Quark Model

Abstract

We present an extension of the Goldstone-boson-exchange constituent quark model including additional interactions beyond the ones used hitherto. For the hyperfine interaction between the constituent quarks we assume pseudoscalar, vector, and scalar meson exchanges and consider all relevant force components produced by these types of exchanges. The resulting model, which corresponds to a relativistic Poincare-invariant Hamiltonian (or equivalently mass operator), provides a unified framework for a covariant description of all light and strange baryons. The ground states and resonances up to an excitation energy of about 2 GeV are reproduced in fair agreement with phenomenology, with the exception of the first excitations above the Lambda and Xi ground states.

11 pages, 4 figures, 3 tables; substantial revisions, additional author, bibliography extended and updated

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Cited by in corpus (9)

• Baryons as relativistic three-quark bound states
• A review of the open charm and open bottom systems
• Axial charges of octet and decuplet baryons
• Effects of a spin-flavour dependent interaction on the baryon mass spectrum
• Effects of a spin-flavour dependent interaction on light-flavoured baryon helicity amplitudes
• Point-form quantum field theory
• Axial charges of the nucleon and N* resonances
• Electromagnetic Properties of Few-Body Systems Within a Point-Form Approach
• Isovector axial vector and pseudoscalar transition form factors of $\Delta$ in QCD