Amplitude analysis of pi(+/-)-C-12 elastic scattering

An energy-dependent amplitude analysis of pi(+/-)-C-12 elastic-scattering data in the pion energy range from 486 to 870 MeV was carried out. Using a careful treatment of Coulomb effects to describe the Coulomb nuclear interference together with the constraints from the pi(+/-)-C-12 forward amplitude f(0) by dispersion relations allows a stringent consistency check of the data. In general a satisfactory description of the data was achieved. but recent pi(-)-C-12 elastic-scattering data need considerable normalization factors to fit into the framework. The still not measured pi(+)-C-12 data as well as the n(+/-)-C-12 data at 870 MeV are predicted. Phase shifts are calculated by partial wave projection of the amplitudes. The partial waves are summed up to obtain the total, total-elastic and total-inelastic cross sections.