Interpretation of two-nucleon photoemission data

The variation of two-nucleon photoemission cross sections and photon asymme tries over kinematic ranges defined by typical detector acceptances is inve stigated. A Monte Carlo sampling technique, applied to theoretical calculat ions based on an unfactorized, distorted-wave approach, is used to obtain a verage cross sections and photon asymmetries. Comparisons are made with cal culations evaluated at one central point per bin. Significant differences b etween the averaged calculations and the central values are observed for C- 12(gamma,np) cross sections, while for (gamma,pp) the differences are much smaller. The averaged photon asymmetries for both reactions are consistent with central values. [S0556-2813(99)05706-4].