Abstract
The theoretical π-nucleus optical potential is constructed based on the α-particle model of the nucleus. This potential has only two necessary inputs, namely, the α-particle wave function of the nucleus and the π-α amplitudes, and has otherwise no adjustable parameters. The differential cross sections for π- 12 C elastic scattering are calculated using this potential over a wide energy region (260-50 MeV). The calculated results show better agreement with the experimental data, particularly in the low-energy region, than those calculated with the Kisslinger potential.
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