Dyson-Schwinger studies of meson masses and decay constants

Details Dyson-Schwinger studies of meson masses and decay constants Dyson-Schwinger studies of meson masses and decay constants

1999-08-12

arxiv.org/abs/nucl-th/9908044v1

Nucl.Phys. A663 (2000) 621-624

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

10.1016/S0375-9474(99)00669-7

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 $\rho$, $\phi$, and $K^\star$ are in good agreement with the experimental values.

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