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arXiv · hep-ph/9709495

Determination of $M_b$ and $α_s$ from the Upsilon System

M. Jamin·A. Pich
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Abstract

The mass of the bottom quark (both the pole mass $M_b$ and the $\MSb$ mass $m_b$) and the strong coupling constant $α_s$ 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: $M_b=4.60 \pm 0.02 \gev$, $m_b(m_b)=4.13 \pm 0.06 \gev$ and $α_s(M_Z)=0.119 \pm 0.008$.

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M. Jamin, A. Pich. 1997-09-29. Determination of $M_b$ and $α_s$ from the Upsilon System. https://doi.org/10.1016/s0920-5632(97)01091-8

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