Failure of the distorted-wave Born approximation in analysis of theMg24(p→,d)Mg23reaction atTp=94MeV

Abstract

We describe a detailed analysis for the $l=0\mathrm{}$ transition to the 2.36 MeV ${\mathrm{½}}^{+}$ level in ${}_{}{}^{23}{}_{}{}^{}\mathrm{Mg}$ where the analyzing powers are large and oscillatory at $T_p=94\mathrm{}$ MeV. Distorted-wave Born approximation calculations completely fail to reproduce this behavior. Qualitative agreement is obtained only by introducing a great deal of absorption artifically, e.g., by using a large radial cutoff.