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arxiv: 1004.3422 · v3 · pith:O6ACA2TPnew · submitted 2010-04-20 · ✦ hep-ph · hep-lat

Chiral extrapolation and determination of low-energy constants from lattice data

classification ✦ hep-ph hep-lat
keywords constantsdatalatticechiraldeterminationextrapolationlow-energymeson
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We propose analytic approximations of chiral SU(3) amplitudes for the extrapolation of lattice data to the physical meson masses. The method allows the determination of NNLO low-energy constants in a controllable fashion. We test the approach with recent lattice data for the ratio F_K/F_pi of meson decay constants.

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