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

Gerhard Ecker; Pere Masjuan; Helmut Neufeld

doi:10.1016/j.physletb.2010.07.037

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

High Energy Physics - Phenomenology 2011-08-05 v3 High Energy Physics - Lattice

Authors: Gerhard Ecker , Pere Masjuan , Helmut Neufeld

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Abstract

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.

Keywords

chiral extrapolation low-energy constants lattice QCD SU(3) amplitudes meson decay constants

Cite

@article{arxiv.1004.3422,
  title  = {Chiral extrapolation and determination of low-energy constants from lattice data},
  author = {Gerhard Ecker and Pere Masjuan and Helmut Neufeld},
  journal= {arXiv preprint arXiv:1004.3422},
  year   = {2011}
}