Complete spin-transfer observables for the two lowest $1^{+}$ levels in ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ have been studied with incident protons of 500 MeV. Outgoing protons were detected with an energy resolution of 120 keV at laboratory angles of 3.5°, 5.0°, 7.5°, 9.5°, and 12.5°. Angular distributions of differential cross sections, analyzing powers, and the individual spin observables for each $1^{+}$ state are recombined into three transverse and one longitudinal partial differential cross section as well as the spin-sum and spin-difference functions. Results are compared with model calculations and electron-scattering data. Information about experimental quantities not accessible in electron scattering is also discussed.

• Received 6 December 1990

DOI:https://doi.org/10.1103/PhysRevC.44.2041