Interactions of Hadrons with Nuclei at High Energy. II. Photoproduction

Abstract

The Glauber theory is applied to photoproduction reactions where the final state of the nucleus is not measured. It is found that the theory matches existing data on ${\rho }^0$ photoproduction very well. It is shown that ${\sigma }_{\rho N}$, the $\rho$-nucleon cross section, can be obtained from these data, and is 25±3 mb. It is argued that in photoproduction of nonvector mesons, similar cross sections can be derived, but that more parameters are involved than in the case of vector mesons. It is predicted that nuclear effects will cause a shift of the central mass in resonance production, and that this shift will depend on the angle of production of the resonance.