Leptonic decays and magnetic moments of baryons in a nonlocal quark model

Journal Article · Tue Jul 01 04:00:00 EDT 1980 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6191846

Dineikhan, M; Efimov, G V; Lobanov, Y Y

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), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 32:1; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BARYON OCTETS
BARYONS
BASIC INTERACTIONS
COMPOSITE MODELS
COUPLING CONSTANTS
CURRENTS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
INTERACTIONS
LAGRANGIAN FUNCTION
LEPTONIC DECAY
LIE GROUPS
MAGNETIC MOMENTS
MATHEMATICAL MODELS
MULTIPLETS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE MULTIPLETS
PERTURBATION THEORY
QUARK MODEL
RENORMALIZATION
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
WEAK INTERACTIONS
WEAK PARTICLE DECAY