TheK¯KΠN¯N-amplitude in a Veneziano type model with spin

Abstract

The generalized Veneziano Model has been applied by Chanet al. to the processes (K¯KΠN¯N) with very impressive results, but in this treatment baryon spin was neglected. In this work we give a covariant spin and isospin decomposition of the above class of processes. Postulating factorization at the lowest meson and baryon poles and using the very stringent duality diagram prescription we are led to a Veneziano type ansatz for the various invariant amplitudes.