Polarizations, analyzing powers and spin-current couplings in inelastic proton scattering

Non-local spin-dependent couplings in the effective nucleon-nucleon interaction are shown to probe current x spin correlations in inelastic nuclear excitations. Together, these couplings and correlations provide an important dynamical source of polarization-analyzing power differences observed in inelastic proton scattering. In most of the presently used models of inelastic scattering this type of coupling arises from knock-on exchange effects. Plane wave impulse approximation (PWIA) results are given for 0+→1+ transitions to illustrate explicitly the role of these current x spin couplings in calculations of P and A. The very selective 0+→0- transitions are also briefly considered. (author)