Abstract
Photoproduction cross sections of charged pi mesons from hydrogen and deuterium have been measured as a function of meson angle at gamma-ray energies of 200, 235, and 265 Mev. The angular range extends from 30° to 180° in the laboratory system. Absolute cross sections have been determined. A least-squares fit of the measured cross sections has been made to the expression , which assumes only and wave scattering. The coefficients so determined are qualitatively consistent with electric and magnetic dipole absorption together with the assumption of a resonant state of angular momentum and of energy close to 300 Mev. Comparison with neutral meson production indicates some direct charged meson production in the state.
- Received 12 March 1954
DOI:https://doi.org/10.1103/PhysRev.95.179
©1954 American Physical Society