Off-shell effects in elastic pion-nucleus scattering

Abstract
For elastic scattering of pions from nuclei in the energy region of the (3, 3) resonance, the effects of the binding of the target nucleons are shown to be important in the calculation of the pion-nucleus optical potential. The size of these binding effects is estimated for the case in which the free pion-nucleon scattering amplitude is represented by a separable form.