Approximations for the treatment of final state interactions in nuclear knockout form factors

Abstract

To investigate the role of final state interactions in knockout reactions, we study the transition form factor corresponding to the absorption of a scalar probe in a single particle model description of the nucleus. The numerical aspects of an approximation which treats at the same level initial and final state interactions are discussed. It provides fair agreement with the corresponding exact calculations for momenta of the ejected nucleon larger than 2 fm/sup -1/. Comparisons with various other approximations show that a careful treatment of the final state interaction is necessary to obtain a realistic estimate of the form factor.