Determination of Low-Energy Constants of Wilson Chiral Perturbation Theory
Gregorio Herdoiza, Karl Jansen, Chris Michael, Konstantin Ottnad,, Carsten Urbach
TL;DR
This paper determines key low-energy constants in Wilson Chiral Perturbation Theory by matching lattice QCD data, analyzing their dependence on lattice action choices and dynamical flavors.
Contribution
It provides new determinations of low-energy constants and explores their dependence on lattice parameters and dynamical flavors.
Findings
Values of $W'_6$, $W'_8$, and $c_2$ determined.
Dependence of constants on lattice action analyzed.
Impact of dynamical flavors on low-energy constants studied.
Abstract
By matching Wilson twisted mass lattice QCD determinations of pseudoscalar meson masses to Wilson Chiral Perturbation Theory we determine the low-energy constants , and their linear combination . We explore the dependence of these low-energy constants on the choice of the lattice action and on the number of dynamical flavours.
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