First results from the asymmetric O(a) improved Fermilab action
Abstract
We present first results from calculations using O(a) improved (FNAL) space-time asymmetric action on a 123 x 24 quenched lattice at β = 5.7 and cSW = 1.57. The asymmetry parameter is determined non-perturbatively from the energy-momentum dispersion relation. This improvement scheme is mass dependent, and the calculations have been done in the charm and bottom quark mass sectors since it is at these heavier masses that the asymmetry is expected to be relevant.
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