ANALYSIS OF DISCRETE AMBIGUITIES FOR PI-N-DELTA AND RHO-N-DELTA VERTEX FUNCTIONS USING INCLUSIVE CHARGE-EXCHANGE REACTIONS

The formalism of Feynman diagrams is used to describe the charge-excha nge (p, n), (n, p), and (He-3, t) reactions on a free proton target, a nd spectator and decay modes are taken into account in the pi + rho g'-model. The type of interference between these modes is shown to dep end on the set of vertex function parameters that are used. It is show n that discrete ambiguities exist for the piNDELTA and rhoNDELTA verte x functions. They are partly removed if charge-exchange data for a wid e energy range are used.