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Article overview
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Scale Setting for $alpha_s$ Beyond Leading Order | | K. Hornbostel
; G.P. Lepage
; C. Morningstar
; | | Date: |
10 Nov 2000 | | Journal: | Nucl.Phys.Proc.Suppl. 94 (2001) 579-583 | | Subject: | hep-lat | | Abstract: | We present a general procedure for applying the scale-setting prescription of Brodsky, Lepage and Mackenzie to higher orders in the strong coupling constant $alphas$. In particular, we show how to apply this prescription when the leading coefficient or coefficients in a series in $alphas$ are anomalously small. We give a general method for computing an optimum scale numerically, within dimensional regularization, and in cases when the coefficients of a series are known. We find significant corrections to the scales for $R_{e^+ e^-}$, $Gamma(B o X_u e ar{
u})$, $Gamma(t o b W)$, and the ratios of the quark pole to $MSbar$ and lattice bare masses. | | Source: | arXiv, hep-lat/0011049 | | Other source: | [GID 540054] hep-ph/0208224 | | Services: | Forum | Review | PDF | Favorites | |
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