Properties of the a1 Meson from Lattice QCD

Abstract

We determine the mass and decay constant of the $a_1$ meson using Monte Carlo simulation of lattice QCD. We find $M_{a_1}=1250\pm 80$ MeV and $f_{a_1}=0.30\pm 0.03(\mathrm{GeV}{)}^2$, in good agreement with experiment.

Comments: 9 page uu-encoded compressed postscript file. version appearing in Phys. Rev. Lett. 74 (1995) 4596