Form factors in radiative decays of pseudoscalar and vector mesons

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

OSTI ID:6359487

Ivanov, A I; Shekhter, V M

From the dominance of the structureless anomalous part of the triangle quark diagram in processes of the type P..--> gamma gamma.. and P..-->..V..gamma.. it is deduced that the form factors of the decays P..-->..l/sup +/l/sup -/..gamma.. and V..-->..Pl/sup +/l/sup -/ are determined mainly by the contribution from virtual vector mesons, which corresponds to the vector-dominance model. The respective form factors of the photons also render convergent the expression for the amplitude of the process P/sup 0/..-->..l/sup +/l/sup -/. The calculation of the probabilities of the above decays leads to results in reasonable agreement with the measured data within the large experimental errors.

• Research Organization: Leningrad Institute of Nuclear Physics, USSR Academy of Sciences
• OSTI ID: 6359487
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 32:3; 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
AMPLITUDES
BOSONS
DECAY
DECAY AMPLITUDES
ELECTROMAGNETIC PARTICLE DECAY
ELEMENTARY PARTICLES
FORM FACTORS
HADRONS
MATHEMATICAL MODELS
MESON RESONANCES
MESONS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
RADIATIVE DECAY
RESONANCE PARTICLES
TRANSITION AMPLITUDES
VECTOR DOMINANCE MODEL
VECTOR MESONS
WEAK PARTICLE DECAY