Charm quark mass from inclusive semileptonic B decays

The MS¯ charm quark mass is determined to be m¯c(m¯c)=1224±17±54MeV from a global fit to inclusive B meson decay data, where the first error is experimental, and includes the uncertainty in αs, and the second is an estimate of theoretical uncertainties in the computation. We discuss the implications of the pole mass renormalon in the determination of mc.