Nf=2 Lattice QCD and Chiral Perturbation Theory

Details Nf=2 Lattice QCD and Chiral Perturbation Theory Nf=2 Lattice QCD and Chiral Perturbation Theory

2005-11-16

arxiv.org/abs/hep-lat/0511036v3

Nucl.Phys.Proc.Suppl.153:283-290,2006

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages. To appear in proceedings of Computational Hadron Physics, Nicosia, 14-17 Sep 2005. Notation made uniform with other p

Scientific paper

10.1016/j.nuclphysbps.2006.01.03

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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