Extended baryon fields and baryon-meson interaction

Abstract

We construct a trilocal baryon field yielding a linear Chew-Frautschi plot for its mass spectrum in conformity with the experiment. This field has a conserved current yielding a dipole form factor, which is also in agreement with the experiment. The field is coupled via a Yukawa-γ5 coupling to a bilocal meson field, and a unitaryS-matrix is constructed in a perturbative manner. The expressions for the terms of higher order of thisS-matrix are formally very similar to those of a local field theory. Moreover, the Zweig-Iizuka rule automatically follows from the extended field theory we have formulated.