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AbstractAbstract
[en] One possibility to test the vector-meson-dominance hypothesis for nucleons is the production of e+e--pairs from protons. We present a model for the pp-γ-vertex that takes into account all necessary symmetries, i.e. current conservation and Lorentz-invariance. The vertex function will be constructed from an effective hadronic lagrangian within a loop expansion approach. Results for a subset of diagrams will be presented. (orig.)
Primary Subject
Source
Feldmeier, H. (ed.); Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany); Technische Hochschule Darmstadt (Germany). Inst. fuer Kernphysik; Bundesministerium fuer Forschung und Technologie, Bonn (Germany); 352 p; 1993; p. 127-130; 21. international workshop: Gross properties of nuclei and nuclear excitations; Hirschegg (Austria); 18-23 Jan 1993
Record Type
Miscellaneous
Literature Type
Conference; Numerical Data
Report Number
Country of publication
CVC THEORY, EFFECTIVE MASS, ELECTROMAGNETIC FORM FACTORS, ELECTRONS, FEYNMAN DIAGRAM, GAUGE INVARIANCE, LAGRANGIAN FIELD THEORY, LORENTZ INVARIANCE, MASS SPECTRA, PAIR PRODUCTION, PHOTON-PROTON INTERACTIONS, PION-NUCLEON INTERACTIONS, POSITRONS, PROTONS, PSEUDOVECTOR COUPLING, SERIES EXPANSION, THEORETICAL DATA, VECTOR DOMINANCE MODEL, VERTEX FUNCTIONS
ANTILEPTONS, ANTIMATTER, ANTIPARTICLES, BARYONS, BASIC INTERACTIONS, CATIONS, CHARGED PARTICLES, COUPLING, DATA, DIAGRAMS, ELECTROMAGNETIC INTERACTIONS, ELEMENTARY PARTICLES, FERMIONS, FIELD THEORIES, FORM FACTORS, FUNCTIONS, HADRON-HADRON INTERACTIONS, HADRONS, HYDROGEN IONS, HYDROGEN IONS 1 PLUS, INFORMATION, INTERACTIONS, INVARIANCE PRINCIPLES, IONS, LEPTONS, MASS, MATHEMATICAL MODELS, MATTER, MESON-BARYON INTERACTIONS, MESON-NUCLEON INTERACTIONS, NUCLEONS, NUMERICAL DATA, PARTICLE INTERACTIONS, PARTICLE MODELS, PARTICLE PRODUCTION, PARTICLE PROPERTIES, PHOTON-BARYON INTERACTIONS, PHOTON-HADRON INTERACTIONS, PHOTON-NUCLEON INTERACTIONS, QUANTUM FIELD THEORY, SPECTRA
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