The following graphs show comparisons of acceptance and acceptance corrected distributions between a simple Monte Carlo, engineered to be flat in Gottfried-Jackson variables, and Gradphi, which shows structure in the generated cos(theta).
Each plot is divided into 4 sections. The top two sections show acceptances. The bottom two sections show acceptance-corrected distributions. The sections on the left correspond to the simple Monte Carlo. The sections on the right correspond to Gradphi.