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arXiv · hep-lat/0511036

Nf=2 Lattice QCD and Chiral Perturbation Theory

L. Scorzato·F. Farchioni·P. Hofmann·K. Jansen·I. Montvay·G. Munster·M. Papinutto·E. E. Scholz·A. Shindler·N. Ukita·C. Urbach·U. Wenger·I. Wetzorke
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Abstract

By employing a twisted mass term, we compare recent results from lattice calculations of Nf=2 dynamical Wilson fermions with Wilson Chiral Perturbation Theory (WChPT). The final goal is to determine some combinations of Gasser-Leutwyler Low Energy Constants (LECs). A wide set of data with different lattice spacings (a ~ 0.2-0.12 fm), different gauge actions (Wilson plaquette, DBW2) and different quark masses (down to the lowest pion mass allowed by lattice artifacts and including negative quark masses) provide a strong check of the applicability of WChPT in this regime and the scaling behaviours in the continuum limit.

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L. Scorzato, F. Farchioni, P. Hofmann, K. Jansen, I. Montvay, G. Munster, M. Papinutto, E. E. Scholz, A. Shindler, N. Ukita, C. Urbach, U. Wenger, I. Wetzorke. 2005-11-30. Nf=2 Lattice QCD and Chiral Perturbation Theory. https://doi.org/10.1016/j.nuclphysbps.2006.01.035

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