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

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

2003-07-02

arxiv.org/abs/hep-lat/0307002v3

Eur.Phys.J.C31:227-238,2003

Physics

High Energy Physics

High Energy Physics - Lattice

21 pages, 4 figures; discussion of the sea quark mass dependence changed, references added

Scientific paper

10.1140/epjc/s2003-01321-3

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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