Abstract
Coherent pion photoproduction, , is calculated in a coupled channels approach in momentum space using an elementary production operator that includes Born terms, vector meson exchange, and -resonance excitation. The final state interaction is treated in the Kerman-McManus-Thaler multiple scattering approach that describes elastic scattering well. Differential cross sections are found to agree well with existing data. The polarization observables and the tensor analyzing powers are predicted for forthcoming experiments. A number of transparent relationships between polarization observables and the elementary production operator is derived. Finally, calculations are performed for coherent photoproduction, , in the threshold region which agree well with a very recent Mainz experiment.
- Received 2 October 1995
DOI:https://doi.org/10.1103/PhysRevC.55.98
©1997 American Physical Society