Differential cross sections for ${}_{}{}^{13}{}_{}{}^{}\mathrm{C}$(${\pi }^{\pm }$,${\pi }^{\pm }$${)}^{13}$${\mathrm{C}}^{\mathrm{*}}$ were measured at an incident pion energy of 65 MeV. Data were gathered for several states up to 11.8 MeV in excitation energy. The experimental results are compared to distorted wave impulse approximation calculations and to other pion scattering data from the same nucleus at higher beam energies. The striking enhancement of ${\pi }^{\mathrm{-}}$ over ${\pi }^{+}$ scattering to the 9.5 MeV ${(9/2\mathrm{}}^{+}$ state observed in previous studies at resonance energies is found to persist at 65 MeV.

• Received 28 September 1987

DOI:https://doi.org/10.1103/PhysRevC.37.710