Light-meson properties from the Bethe-Salpeter equation

preprint2010arXivOpen access

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.

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Light-meson properties from the Bethe-Salpeter equation

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