Abstract
We determine the bottom MS quark mass m b and the quark mass in the potential subtraction scheme from moments of the b b ̄ production cross section and from the mass of the Upsilon 1S state at next-to-next-to-leading order in a reorganized perturbative expansion that sums Coulomb exchange to all orders. We find m b( m b)=(4.25±0.08) GeV and m b, PS (2 GeV)=(4.59±0.08) GeV for the potential-subtracted mass at the scale 2 GeV, adopting a conservative error estimate.
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