Light-meson properties from the Bethe-Salpeter equation

Abstract

We discuss how to extract observables from an inhomogeneous vertex Bethe-Salpeter equation without resorting to the corresponding homogeneous equation. As an example we present a prediction for the $e^{+}{e}^{-}$ decay width of the $\rho (1450)$ or ${\rho }^{\prime }$ meson. We also attempt to identify the momentum range contributing to a vector meson's decay constant.

Comments: 3 pages, 3 figures, talk presented at the conference "Quark Confinement and the Hadron Spectrum IX", Madrid, Spain, 30th of August-3rd of September 2010; submitted to the proceedings