The charm quark's mass in quenched QCD
Abstract
We present our preliminary result for the charmed quark mass, which follows from taking the Ds and K meson masses from experiment and r0=0.5 fm (or, equivalently FK=160 MeV) to set the scale. For the renormalization group invariant quark mass we obtain Mc = 1684(64) MeV, which translates to mc(mc)= 1314 (40)(20)(7) MeV for the running mass in the MSbar scheme. Renormalization is treated non-perturbatively, and the continuum limit has been taken, so that the only uncontrolled systematic error consists in the use of the quenched approximation.
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