Quark mass dependence of masses and decay constants of the pseudo-Goldstone bosons in QCD期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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

Authors:	F Farchioni I Montvay E Scholz L Scorzato The qqq Collaboration

Institution:	(1) Westfälische Wilhelms-Universität Münster, Institut für Theoretische Physik, Wilhelm-Klemm-Strasse 9, 48149 Münster, Germany;(2) Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany

Abstract:	The dependence of the pseudo-scalar 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 16⁴ lattice. ${\cal O}(a)$ 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.Received: 7 July 2003, Published online: 2 October 2003

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