2 6 N ov 2 00 9 Light Meson Physics from Maximally Twisted Mass Lattice QCD ETM
نویسنده
چکیده
We present a comprehensive investigation of light meson physics using maximally twisted mass fermions for Nf = 2 mass-degenerate quark flavours. By employing four values of the lattice spacing, spatial lattice extents ranging from 2.0 fm to 2.5 fm and pseudo scalar masses in the range 280 . mPS . 650MeV we control the major systematic effects of our calculation. This enables us to confront our data with chiral perturbation theory and extract low energy constants of the effective chiral Lagrangian and derived quantities, such as the light quark mass, with high precision. PACS: 11.15.Ha; 12.38.Gc; 12.39.Fe Preprint-No: HISKP-TH-09-37, DESY 09-187, SFB/CPP-09-115, MS-TP-09-27, ROM2F/2009/24, IFT-UAM/CSIC-09-58
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