Meson masses and decay constants from unquenched lattice QCD
K. Jansen, C. McNeile, C. Michael, C. Urbach (for the ETM, Collaboration)
TL;DR
This paper presents unquenched lattice QCD calculations of meson masses and decay constants, analyzing decay effects, chiral extrapolations, and testing theoretical relations with two sea quark flavors.
Contribution
It provides new unquenched lattice QCD results for various meson properties using twisted mass formalism with two sea quarks.
Findings
Masses of non-singlet light mesons determined at two lattice spacings.
Decay constants of the rho meson computed and analyzed.
Validation of KRSF relations' mass dependence.
Abstract
We report results for the masses of the flavour non-singlet light 0++, 1--, and 1+- mesons from unquenched lattice QCD at two lattice spacings. The twisted mass formalism was used with two flavours of sea quarks. For the 0++ and 1+- mesons we look for the effect of decays on the mass dependence. For the light vector mesons we study the chiral extrapolations of the mass. We report results for the leptonic and transverse decay constants of the rho meson. We test the mass dependence of the KRSF relations.
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