Chiral extrapolation and determination of low-energy constants from lattice data期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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

Authors:	G Ecker P MasjuanH Neufeld

Institution:	Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Wien, Austria

Abstract:	We propose analytic approximations of chiral SU(3) $SU (3)$ 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 FK/Fπ $F_{K} / F_{π}$ of meson decay constants.

Keywords:	Lattice QCD Chiral perturbation theory Chiral extrapolation Low-energy constants
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