Definitive Test of Outgoing-Nucleon Analog Charge Exchange Using the ReactionsC12(π±, πN)C12(4.44 and 15.11 MeV)

Outgoing-nucleon charge exchange has been used to explain reduction in $\pi -N$ isospin selectivity in a large number of nucleon-removal experiments. The present work tests the validity of this model by measuring the total cross sections for nucleon removal to the 4.44-MeV, $T=0\mathrm{}$ and the 15.11-MeV, $T=1\mathrm{}$ states in ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, where analog charge exchange is possible for the latter, but not the former state.