Baryon axial-vector couplings and SU(3)-symmetry breaking in chiral quark models

D. Horvat, A. Ilakovac, and D. Tadić
Phys. Rev. D 33, 3374 – Published 1 June 1986
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Abstract

SU(3)-symmetry breaking is studied in the framework of the chiral bag models. Comparisons are also made with the MIT bag model and the harmonic-oscillator quark model. An important clue for the nature of the symmetry breaking comes from the isoscalar axial-vector coupling constant gAS which can be indirectly estimated from the Bjorken sum rules for deep-inelastic scattering. The chiral bag model with two radii reasonably well accounts for the empirical values of gAS and of the axial-vector coupling constants measured in hyperon semileptonic decays.

  • Received 14 November 1985

DOI:https://doi.org/10.1103/PhysRevD.33.3374

©1986 American Physical Society

Authors & Affiliations

D. Horvat

  • Zavod za Fiziku, Elektrotehniki Fakultet, University of Zagreb, Zagreb, Croatia, Yugoslavia

A. Ilakovac and D. Tadić

  • Zavod za Teorijsku Fiziku, Prirodoslovno-Matematiki Fakultet, University of Zagreb, Zagreb, Croatia, Yugoslavia

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Vol. 33, Iss. 11 — 1 June 1986

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