Source theory analysis of electron-positron annihilation experiments.
The phenomenological viewpoint already applied to deep inelastic scattering is extended to the discussion of electron-positron annihilation experiments. Some heuristic arguments lead to simple forms for the pion differential cross section that are in reasonable accord with the published experimental data in the energy interval 3-4.8 Gev.
Schwinger
J
J
University of California, Los Angeles, Calif. 90024.