Light Meson Physics from Maximally Twisted Mass Lattice QCD
R. Baron, Ph. Boucaud, P. Dimopoulos, F. Farchioni, R. Frezzotti, V., Gimenez, G. Herdoiza, K. Jansen, V. Lubicz, C. Michael, G. Muenster, D., Palao, G.C. Rossi, L. Scorzato, A. Shindler, S. Simula, T. Sudmann, C., Urbach, U. Wenger
TL;DR
This study uses maximally twisted mass lattice QCD to precisely analyze light meson properties, controlling systematic effects and extracting low energy constants and quark masses by comparing data with chiral perturbation theory.
Contribution
It provides a comprehensive lattice QCD analysis of light meson physics with multiple lattice spacings and volumes, enabling high-precision determination of physical parameters.
Findings
Extraction of low energy constants of chiral Lagrangian
Precise determination of light quark masses
Validation of chiral perturbation theory fits
Abstract
We 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.
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Taxonomy
TopicsNonlinear Waves and Solitons