Leptonic decays and magnetic moments of baryons in a nonlocal quark model
The leptonic decays of the baryon octet are investigated in the framework of a nonlocal quark model. A baryon-quark strong-interaction Lagrangian invariant under SU(3) x SU/sup c/(3) x U(1) is constructed. The weak interaction is introduced as a pure current x current V--A interaction without admixture of D-coupling. All the parameters determining the quark field have been determined from analysis of decays of mesons. The widths of the leptonic decays of the baryons are considered, the renormalization, due to the strong interaction, of the axial coupling constant is calculated, the intensities of the contributions of F- and D-coupling to the matrix elements of the leptonic decays are calculated, and the magnitudes of the anomalous magnetic moments and ''weak magnetism'' of the baryons are determined. The effective constant of the perturbation-theory expansion turns out to be less than unity. The results are in good agreement with experiment.
- Research Organization:
- Joint Institute for Nuclear Research, Dubna
- OSTI ID:
- 6191846
- Journal Information:
- Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Vol. 32:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BARYONS
LEPTONIC DECAY
MAGNETIC MOMENTS
QUARK MODEL
BARYON OCTETS
AXIAL-VECTOR CURRENTS
COUPLING CONSTANTS
LAGRANGIAN FUNCTION
PERTURBATION THEORY
RENORMALIZATION
SU-3 GROUPS
ALGEBRAIC CURRENTS
BASIC INTERACTIONS
COMPOSITE MODELS
CURRENTS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
INTERACTIONS
LIE GROUPS
MATHEMATICAL MODELS
MULTIPLETS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE MULTIPLETS
SU GROUPS
SYMMETRY GROUPS
WEAK INTERACTIONS
WEAK PARTICLE DECAY
645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties