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Quark mass dependence of masses and decay constants of the pseudo-Goldstone bosons in QCD

F. Farchioni·I. Montvay·E. Scholz·L. Scorzato
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Abstract

The dependence of the pseudoscalar meson masses and decay constants on sea and valence quark masses is compared to next-to-leading order (NLO) Chiral Perturbation Theory (ChPT). The numerical simulations with two light dynamical quark flavors are performed with the Wilson-quark lattice action at gauge coupling beta=5.1 and hopping parameters kappa=0.176, 0.1765, 0.177 on a 16^4 lattice. O(a) lattice artifacts are taken into account by applying chiral perturbation theory for the Wilson lattice action. The values of the relevant combinations of Gasser-Leutwyler constants L_4, L_5, L_6 and L_8 are estimated.

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F. Farchioni, I. Montvay, E. Scholz, L. Scorzato. 2003-08-06. Quark mass dependence of masses and decay constants of the pseudo-Goldstone bosons in QCD. https://doi.org/10.1140/epjc%2Fs2003-01321-3

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