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Covariant QCD Modeling of Light Meson Physics

Peter C. Tandy
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Abstract

We summarize recent progress in soft QCD modeling based on the set of Dyson--Schwinger equations truncated to ladder-rainbow level. This covariant approach to hadron physics accommodates quark confinement and implements the QCD one-loop renormalization group behavior. We compare the dressed quark propagator, pseudoscalar and vector meson masses as a function of quark mass, and the rho -> pi pi coupling to recent lattice-QCD data. The error in the Gell-Mann--Oakes--Renner relation with increasing quark mass is quantified by comparison to the exact pseudoscalar mass relation as evaluated within the ladder-rainbow Dyson-Schwinger model.

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Peter C. Tandy. 2003-01-10. Covariant QCD Modeling of Light Meson Physics. https://doi.org/10.1016/s0146-6410(03)00024-3

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