Analysis of theC12(p→, p′)C12reaction at 200 MeV in the distorted-wave impulse approximation

Differential cross sections and analyzing powers are presented for discrete states of ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ up to 21-MeV excitation energy as observed by the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(\overrightarrow{p}, p^{\prime }){}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ reaction at 200 MeV. The results of distorted-wave, impulse-approximation calculations with a 210-MeV free nucleon-nucleon $t$ matrix are compared with the data for most of the transitions. The comparisons are divided into classes that emphasize different aspects of the effective interaction. As a whole, the comparisons are comparable to those at lower energies. However, the description of the 15.11-MeV transition to a $1^{+}$, $T=1\mathrm{}$ state is decidedly inferior. The effects of removing abnormal-parity amplitudes with $S=1\mathrm{}$ are considered for several transitions. In particular, their removal produces good agreement for the 15.11-MeV state.