On a generalized distorted-wave approximation for nuclear rearrangement reactions

Summary  Starting from an exact three-body theory for the nuclear rearrangement reactiona+(b+c)→b+(a+c), we study a generalized distorted-wave approximation in the momentum-space representation. Using suitable kinematic transformations we recast this representation in a form coinciding with the one obtained by means of the Feynmandiagram summation method. The generalized potential responsible for the transition will be written in a compact form involving the resolvent operator for thea-b subsystem.