Coupled-channels calculations of intermediate energy $\text{π}{}^{\mathrm{+}}\text{−}{}^{13}\text{C}$ inelastic scattering and charge exchange

Abstract

Coupled-channels calculations have been carried out for pion inelastic scattering and charge exchange on 1p-shell nuclei at pion energies between 120 and 226 MeV. A momentum space technique is used, with the 1p-shell shell-model wavefunctions of Cohen and Kurath. Results are presented here for A=13. Channel-coupling effects are negligible in the strong $\text{3}\text{2}{}^{\mathrm{-}}$ and $\text{5}\text{2}{}^{\mathrm{-}}$ inelastic excitations of ¹³C, but enhance the analog charge-exchange cross sections by 7 to 20%.