Effect of complex coupling in inelastic cross sections,asymmetries and spin flip in the DWA

The effects of adding an effective imaginary part to real inelastic microscopic form factors in DWA are investigated. Calculations are compared to data for the proton differential cross sections and asymmetries of the lowest-lying states of ¹²⁰Sn, ⁵⁸Ni, and ²⁰⁸Pb. Proton spin flip is calculated for ¹²⁰Sn. Both collective imaginary and effective microscopic imaginary contributions were considered. The most substantial improvements were in fits to asymmetry data. Collective-model calculations indicate the effects of complex coupling are comparable to those of the deformed spin-orbit well.