Anomalous quark diagrams in the virtual decays V. -->. P+P' and P. -->. V+P' and in related processes

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5564810

Ivanov, A N

The form factors of the virtual decays V..-->..P+P' and P..-->..V+P' are calculated under the assumption that the vertex VPP', where V and P are vector and pseudoscalar mesons, is dominated by the anomaly associated with the corresponding quark diagram. The effect of the resulting form factors on the electromagnetic and weak form factors of the P meson is considered. It is shown that the results agree with the predictions of the standard vector-dominance model if the interaction of the photon and W boson with the pseudoscalar mesons is determined by the anomaly of the quark diagram in the ..gamma..PP and WPP vertices. A discussion is given of the effect of the form factors of the decay rho..--> pi pi.. of a virtual rho meson on the superconvergence of the dispersion relations for the rho..pi -->..rho..pi.. scattering amplitude and on the rho-meson constribution to the ..pi pi.. scattering length. Rules for calculating quark amplitudes involving any number of mesons are formulated for the examples of the decays ..omega --> pi../sup +/..pi../sup -/..pi../sup 0/ and eta(eta')..--> pi../sup +/..pi../sup -/..gamma...

• Research Organization: M. I. Kalinin Polytechnic Int., Leningrad
• OSTI ID: 5564810
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 33:6; ISSN SJNCA
• 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
COMPOSITE MODELS
DECAY
DIAGRAMS
DISPERSION RELATIONS
ELEMENTARY PARTICLES
ETA MESONS
FEYNMAN DIAGRAM
FORM FACTORS
HADRONIC PARTICLE DECAY
HADRONS
MATHEMATICAL MODELS
MESON RESONANCES
MESONS
OMEGA-784 RESONANCES
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUARK MODEL
RESONANCE PARTICLES
RHO-765 RESONANCES
SUPERCONVERGENCE RELATIONS
VECTOR DOMINANCE MODEL
VECTOR MESONS
VIRTUAL PARTICLES