Dyson-Schwinger studies of meson masses and decay constants

Abstract

The masses and decay constants of the light mesons are studied within a ladder-rainbow truncation of the set of Dyson-Schwinger equations using a model 2-point gluon function. The one phenomenological parameter and two current quark masses are fitted to reproduce $f_{\pi }$, $m_{\pi }$ and $m_K$. Our results for $f_K$, and for the vector mesons $\rho$, $\varphi$, and $K^{\star }$ are in good agreement with the experimental values.

4 pages, uses espcrc1.sty, talk presented at PANIC99, Uppsala, Sweden

References in corpus (3)

• Pion mass and decay constant
• Hadron Physics from the Global Color Model of QCD
• Infrared Behaviour of Propagators and Vertices

Cited by in corpus (5)

• Decay constants of the pseudoscalar mesons in the framework of the coupled Schwinger-Dyson equation and Bethe-Salpeter equation
• Why $\Xi (1690)$ and $\Xi (2120)$ are so narrow?
• A study of the $KN$-$K^{\ast }N$ coupled systems
• Decay constants of the pseudoscalar charmonium and bottomonium
• Ground state mass spectrum for scalar diquarks with Bethe-Salpeter equation