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- W102617487 startingPage "1244" @default.
- W102617487 abstract "The corrections to the gluonic width of $ensuremath{Upsilon}$-like mesons in quantum chromodynamics (QCD) through first order in ${ensuremath{alpha}}_{s}$ are calculated, with the result ${ensuremath{Gamma}}_{g}={{ensuremath{Gamma}}_{g}}^{0}[1+(3.8ifmmodepmelsetextpmfi{}0.5)ifmmodetimeselsetexttimesfi{}{ensuremath{alpha}}_{s}frac{({M}_{ensuremath{Upsilon}})}{ensuremath{pi}}]$, using the $stackrel{-}{mathrm{MS}}$ scheme definition of ${ensuremath{alpha}}_{s}$, renormalized at ${M}_{ensuremath{Upsilon}}$. With this correction, the measured value of the leptonic branching ratio of the $ensuremath{Upsilon}$ can be used to determine ${ensuremath{alpha}}_{s}$, or, equivalently, the QCD scale parameter ${ensuremath{Lambda}}_{stackrel{-}{mathrm{MS}}}$. The result is ${ensuremath{Lambda}}_{stackrel{-}{mathrm{MS}}}=100$ MeV, with experimental errors of $_{ensuremath{-}25}^{+34}mathrm{MeV}$ and comparable theoretical uncertainties. Analysis of the $ensuremath{psi}$ and ${ensuremath{psi}}^{ensuremath{'}}$ data is consistent with this value." @default.
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- W102617487 date "1981-11-02" @default.
- W102617487 modified "2023-09-27" @default.
- W102617487 title "Quantum Chromodynamic Corrections to the Gluonic Width of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>ϒ</mml:mi></mml:math>Meson" @default.
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- W102617487 doi "https://doi.org/10.1103/physrevlett.47.1244" @default.
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