Coherent ${\pi }^0$ photoproduction from nuclei is calculated in the $\Delta$-hole framework. Important background production terms are included, and a comparison with data is presented. Sensitivity to various aspects of the dynamics, such as recoil and the $\Delta$ spreading potential, are examined.

NUCLEAR REACTIONS ${}_{}{}^4{}_{}{}^{}\mathrm{He}$, ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(\gamma , {\pi }^0)$ calculated in $\Delta$-hole formalism and compared with data for $E_{\gamma }=200\mathrm{} \mathrm{to} 400$ MeV.

• Received 20 September 1982

DOI:https://doi.org/10.1103/PhysRevC.27.751