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

2010/04/30 by Gerhard Ecker, Pere Masjuan, Helmut Neufeld · 1 citation
Physics and Astronomy · #hep-ph #hep-lat

paper · pdf · doi:10.1016/j.physletb.2010.07.037

published as Phys.Lett.B692:184-188,2010 · 10 pages, 1 figure, matches version published in PLB: title enlarged, comments added, results unchanged

arxiv created 2010/08/16 · arxiv updated 2011/08/05

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.

Cited by

• A new global fit of the Lir at next-to-next-to-leading order in Chiral Perturbation Theory