Overlap functions in correlation methods and quasifree nucleon knockout from O-16 - art. no. 014306

The cross sections of the (e,e'N) and (gamma,p) reactions on O-16 are calcu lated, for the transitions to the 1/2- ground state and the first 3/2(-) ex cited state of the residual nucleus, using single-particle overlap function s obtained on the basis of one-body density matrices within different corre lation methods. The electron-induced one-nucleon knockout reaction is treat ed within a nonrelativistic distorted wave impulse approximation framework. The theoretical treatment of the (gamma,p) reaction includes both contribu tions of the direct knockout mechanism and of meson-exchange currents. The results are sensitive to details of the different overlap functions. The co nsistent analysis of the reaction cross sections and the comparison with th e experimental data make it possible to study the nucleon-nucleon correlati on effects.