Meson Decay Constant Predictions of the Valence Approximation to Lattice QCD

Details Meson Decay Constant Predictions of the Valence Approximation to Lattice QCD Meson Decay Constant Predictions of the Valence Approximation to Lattice QCD

1993-02-28

arxiv.org/abs/hep-lat/9302012v2

Physics

High Energy Physics

High Energy Physics - Lattice

14 pages of Latex using REVTEX macros, included, plus Postscript for 2 figures, also included. (corrected two typos, one somew

Scientific paper

We evaluate $f_{\pi}/ m_{\rho}$, $f_K/ m_{\rho}$, $1/f_{\rho}$, and $ m_{\phi}/(f_{\phi} m_{\rho})$, extrapolated to physical quark mass, zero lattice spacing and infinite volume, for lattice QCD with Wilson quarks in the valence (quenched) approximation. The predicted $m_{\phi}/(f_{\phi} m_{\rho})$ differs from experiment by less than its statistical uncertainty of approximately 15\%. The other three constants are 10\% to 20\% below experiment, equivalent to between one and two times the corresponding statistical uncertainties.

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