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Baron, Remi; Boucaud, Phillip; Dimopoulos, Petros; Frezzotti, Roberto; Palao, David; Rossi, Giancarlo; Farchioni, Federico; Münster, Gernot; Sudmann, Tobias; Gimenez, Vicent; Herdoiza, Gregorio; Jansen, Karl; Lubicz, Vittorio; Simula, Silvano; Michael, C.; Scorzato, L.; Shindler, A.; Urbach, C.; Wenger, U.
The journal of high energy physics, 08/2010, Letnik: 2010, Številka: 8Journal Article
We present a comprehensive investigation of light meson physics using maximally twisted mass fermions for N f = 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 ≲ m PS ≲ 650MeV we control the major systematic effects of our calculation. This enables us to confront our N f = 2 data with SU(2) chiral perturbation theory and extract low energy constants of the effective chiral Lagrangian and derived quantities, such as the light quark mass.
