Light-meson properties from the Bethe-Salpeter equation
hep-ph
/ Authors
/ 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 $ρ(1450)$ or $ρ'$ meson. We also attempt to identify the momentum range contributing to a vector meson's decay constant.