Remarks on the Final State Interaction in Fermi's Theory of Multiple Particle Production

Abstract

A method of modifying Fermi's statistical formula of multiple particle production is presented. It consists of expressing the “matrix element” of Fermi's theory as an integration of plane wave in the effective interaction volume, and then replacing this free state wave function by that of interacting particles. Its application to the Π-N system and deuteron production is given. Belenky's formalism on the same problem is critically discussed.