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

Journal Article · Sun Jun 01 00:00:00 EDT 1986 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.33.3374· OSTI ID:5610649

Horvat, D; Ilakovac, A; Tadic, D

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 g/sub A//sup S/ 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 g/sub A//sup S/ and of the axial-vector coupling constants measured in hyperon semileptonic decays.

• Research Organization: Zavod za Fiziku, Elektrotehniki Fakultet, University of Zagreb, Zagreb, Croatia, Yugoslavia
• OSTI ID: 5610649
• Journal Information: Phys. Rev. D; (United States), Vol. 33:11
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
SYMMETRY BREAKING
BARYONS
COUPLING CONSTANTS
SU-3 GROUPS
CHIRAL SYMMETRY
DEEP INELASTIC SCATTERING
ELECTRON-PROTON INTERACTIONS
HARMONIC OSCILLATOR MODELS
MATRIX ELEMENTS
POLARIZED BEAMS
POLARIZED TARGETS
QUARK MODEL
SUM RULES
WAVE FUNCTIONS
BEAMS
COMPOSITE MODELS
ELECTRON-NUCLEON INTERACTIONS
ELEMENTARY PARTICLES
EQUATIONS
EXTENDED PARTICLE MODEL
FERMIONS
FUNCTIONS
HADRONS
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
SCATTERING
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
TARGETS
645302* - High Energy Physics- Particle Invariance Principles & Symmetries- Applications to Electromagnetic & Weak Interactions- (-1987)