Determination of Mb and αs from the Upsilon System
M. Jamin, A. Pich
Abstract
The mass of the bottom quark (both the pole mass Mb and the mass mb) and the strong coupling constant αs have been determined from QCD moment sum rules for the Υ system. In the pole-mass scheme large perturbative corrections resulting from coulombic contributions have been resummed. The results of this analysis are: Mb=4.60 0.02 , mb(mb)=4.13 0.06 and αs(MZ)=0.119 0.008.
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