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Determination of Mb and αs from the upsilon system

AuthorsJamin, Matthias; Pich, Antonio
Issue DateMay-1998
CitationNuclear Physics B Proceedings Supplements 64(1-3): 371-375 (1998)
AbstractThe 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 $\alpha_s(M_Z)=0.119 \pm 0.008$.
Description5 páginas, 1 figura, 2 tablas.-- Comunicación presentada a la High Energy Conference on Quantum Chromodynamics (QCD'97) celebrada en Julio de 1997 en Montpellier (Francia).-- arXiv:hep-ph/9709495v1
Publisher version (URL)http://dx.doi.org/10.1016/S0920-5632(97)01091-8
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