Determination of $M_b$ and $\alpha_s$ from the Upsilon System

M. Jamin; A. Pich

doi:10.1016/S0920-5632(97)01091-8

Determination of $M_b$ and $\alpha_s$ from the Upsilon System

High Energy Physics - Phenomenology 2009-10-30 v1

Authors: 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 $\alpha_s$ have been determined from QCD moment sum rules for the $\Upsilon$ 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 $\alpha_s(M_Z)=0.119 \pm 0.008$ .

Keywords

bottom quark mass strong coupling constant QCD sum rules Upsilon system pole mass

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@article{arxiv.hep-ph/9709495,
  title  = {Determination of $M_b$ and $\alpha_s$ from the Upsilon System},
  author = {M. Jamin and A. Pich},
  journal= {arXiv preprint arXiv:hep-ph/9709495},
  year   = {2009}
}

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5 pages, 1 Postscript figure Invited talk at the High Energy Conference on Quantum Chromodynamics (QCD'97), Montpellier, July 1997

Determination of $M_b$ and $\alpha_s$ from the Upsilon System

Abstract

Keywords

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