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arxiv: 1012.1522 · v1 · pith:QYAHVWXWnew · submitted 2010-12-07 · ✦ hep-ph · hep-lat

Chiral extrapolation of SU(3) amplitudes

classification ✦ hep-ph hep-lat
keywords chiralamplitudesapproximationsconstantsdataextrapolationlatticennlo
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Approximations of chiral SU(3) amplitudes at NNLO are proposed to facilitate the extrapolation of lattice data to the physical meson masses. Inclusion of NNLO terms is essential for investigating convergence properties of chiral SU(3) and for determining low-energy constants in a controllable fashion. The approximations are tested with recent lattice data for the ratio of decay constants F_K/F_pi.

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