Exclusive measurements of the cross section and analyzing power for the [Formula Presented] proton knockout reaction at 202 MeV are presented for three quasifree angle pairs. Energy-sharing cross section distributions are found to be in excellent agreement with distorted wave impulse approximation (DWIA) calculations, yielding spectroscopic factors that are in reasonable agreement with [Formula Presented] studies and theoretical expectations. The measured analyzing powers are, however, in significant disagreement with results of standard DWIA calculations that utilize the free nucleon-nucleon interaction. Analyzing power calculations are furthermore found to be insensitive to variations in the distorting potentials, different descriptions of the bound state, different energy prescriptions of the two-body interaction, and nonlocality effects. Agreement between theory and experiment is shown to improve only when the density dependence of the nucleon-nucleon interaction is incorporated within the DWIA.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics