We report results for the masses of the flavor nonsinglet light $0^{++}$, $1^{--}$, and $1^{+-}$ mesons from unquenched lattice QCD at two lattice spacings. The twisted mass formalism was used with two flavors 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 KSRF relations, between the mass, leptonic coupling constant, and strong coupling of the rho meson.

• Received 2 July 2009

DOI:https://doi.org/10.1103/PhysRevD.80.054510