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

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

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 FK/Fπ of meson dec...

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Veröffentlicht in:Physics letters. B 2010-08, Vol.692 (3), p.184-188
Hauptverfasser: Ecker, G., Masjuan, P., Neufeld, H.
Format: Artikel
Sprache:eng
Schlagworte:
Approximation
Chiral extrapolation
Chiral perturbation theory
Constants
Decay
Elementary particles
Exact sciences and technology
Extrapolation
Lattice QCD
Lattices
Low-energy constants
Mathematical analysis
Mesons
Nuclear physics
Physics
The physics of elementary particles and fields
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Zusammenfassung: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 FK/Fπ of meson decay constants.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2010.07.037