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Author Kamal, A. N. ♦ Chong-Huah, L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ♦ PSEUDOSCALAR MESONS ♦ DISPERSION RELATIONS ♦ VERTEX FUNCTIONS ♦ DUALITY ♦ ELECTRON-POSITRON INTERACTIONS ♦ ELECTRONS ♦ GAMMA RADIATION ♦ HADRONS ♦ LIGHT CONE ♦ MUONS ♦ PAIR PRODUCTION ♦ PARTICLE DECAY ♦ PARTICLE PRODUCTION ♦ PHOTONS ♦ PIONS NEUTRAL ♦ QUANTUM CHROMODYNAMICS ♦ QUARKS ♦ SCATTERING ♦ SUM RULES ♦ VECTOR MESONS ♦ BOSONS ♦ DECAY ♦ ELECTROMAGNETIC RADIATION ♦ ELEMENTARY PARTICLES ♦ EQUATIONS ♦ FERMIONS ♦ FIELD THEORIES ♦ FUNCTIONS ♦ INTERACTIONS ♦ IONIZING RADIATIONS ♦ LEPTON-LEPTON INTERACTIONS ♦ LEPTONS ♦ MASSLESS PARTICLES ♦ MESON RESONANCES ♦ MESONS ♦ PARTICLE INTERACTIONS ♦ PIONS ♦ POSTULATED PARTICLES ♦ QUANTUM FIELD THEORY ♦ RADIATIONS ♦ RESONANCE PARTICLES ♦ SPACE-TIME ♦ High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties ♦ High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties ♦ High Energy Physics- Field Theory
Abstract A double-dispersion-relation model for the neutral-pseudoscalar-meson--two-photon vertex function is proposed. Several spectral-function sum rules are derived. Quark-hadron duality is established in the model, so that the low-energy behavior of the vertex function is dominated by vector-meson resonances, and the high-energy behavior of the vertex function is determined by QCD dynamics and light-cone algebra. The vertex function is then applied to study the decay processes ..pi../sup 0/(eta/sup 0/)..--> gamma gamma.., ..pi../sup 0/(eta/sup 0/)..-->..e/sup +/e/sup -/(..mu../sup +/..mu.. /sup -/), ..pi../sup 0/(eta/sup 0/)..-->..e/sup +/e/sup -/(..mu../sup +/..mu.. /sup -/)..gamma.., and the scattering process e/sup +/e/sup -/..--> pi../sup 0/(eta/sup 0/)..gamma... .AE
Educational Use Research
Learning Resource Type Article
Publisher Date 1985-10-01
Publisher Department Department of Physics, Theoretical Physics Institute, University of Alberta, Edmonton, Alberta, Canada T6G 2J1
Publisher Place United States
Journal Phys. Rev. D
Volume Number 32
Issue Number 7
Organization Department of Physics, Theoretical Physics Institute, University of Alberta, Edmonton, Alberta, Canada T6G 2J1


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