Partially conserved axial-vector current condition in the quark model: G/sub A//G/sub V/ for vector mesons and the. omega. rho. pi. coupling constant

Journal Article · Tue Jun 01 04:00:00 EDT 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.25.2955· OSTI ID:5164614

Pham, T N

The PCAC (partially conserved axial-vector current) condition is implemented at the quark level for hadrons considered as bound states of constituent quarks. Using the Goldberger-Treiman relation and the ..omega..rho..pi.. coupling constant, it is shown that G/sub A//G/sub V/ for the ..omega -->..rho Gamow-Teller transition is lower than the quark-model prediction by 20%. This supports the current view that G/sub A//G/sub V/ for bound quarks is reduced by confinement effects. With this reduction, the decay rates GAMMA(D*..-->..D..pi../sup 0/) are calculated and found to be more or less in agreement with measurements.

• Research Organization: Centre de Physique Theorique de l'Ecole Polytechnique, Plateau de Palaiseau, 91128 Palaiseau Cedex, France
• OSTI ID: 5164614
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 25:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645205* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 0-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BOUND STATE
COMPOSITE MODELS
COUPLING CONSTANTS
DECAY
ELEMENTARY PARTICLES
GAMOW-TELLER RULES
GOLDBERGER-TREIMAN RELATION
HADRONS
MATHEMATICAL MODELS
MESON RESONANCES
MESONS
PARTICLE DECAY
PARTICLE MODELS
PCAC THEORY
PIONS
PSEUDOSCALAR MESONS
QUARK MODEL
RESONANCE PARTICLES
VECTOR MESONS