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Light meson physics from maximally twisted mass lattice QCD

AuthorsBaron, R.; Boucaud, Ph.; Dimopoulos, P.; Farchioni, F.; Frezzotti, R.; Giménez Gómez, Vicente ; Herdoiza, Gregorio ; Jansen, K.; Lubicz, V.; Michael, C.; Muenster, G.; Palao, David ; Rossi, G. C.; Scorzato, L.; Shindler, Andrea ; Simula, S.; Sudmann, T.; Urbach, C.; Wenger, U.
KeywordsLight mesons
Low energy constants
Chiral perturbation theory
Issue Date5-Feb-2010
AbstractWe present a comprehensive investigation of light meson physics using maximally twisted mass fermions for two 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 MeV to 650 MeV 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.
Description40 pages, 5 figures, 8 tables, 3 appendix.-- PACS: 11.15.Ha; 12.38.Gc; 12.39.Fe
Publisher version (URL)http://arxiv.org/abs/0911.5061
Appears in Collections:(IFT) Artículos
(IFIC) Artículos
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