Modeling Nonperturbative QCD for Mesons and Couplings

Abstract

We discuss aspects of a covariant QCD modeling of meson physics by illustrating applications to several coupling constants and form factors. In particular, we cover the $\rho \pi \pi$ and ${\pi }^0\gamma \gamma$ interactions, the $\rho$ contribution to the pion charge radius, and $\pi NN$ coupling.

Comments: Talk given at the IVth Workshop on Quantum Chromodynamics, Paris, June 1998; 8 pages, LaTeX, incl 3 PS figs; to be published