Properties of the Isovector Monopole and Other Giant Resonances in Pion Charge Exchange

Abstract
We present the energies, widths, and cross sections of the isovector monopole resonance in nuclei between Ca40 and Pb208 excited by the (π±, π0) reactions. We also give results for the giant dipole resonance. Both resonances exhaust the same substantial fraction of the cross section calculated in a random-phase, distorted-wave impulse-approximation model. No isovector quadrupole resonance was observed.