文章基本信息

标题：The determination of alpha_s(M_Z) from perturbative analyses of short-distance-sensitive lattice QCD observables revisited
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作者：K. Maltman ; D. Leinweber ; P.J Moran 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2008
卷号：2008
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The determination of as(MZ) via perturbative analyses of short-distance-sensitive lattice observables is revisited, incorporating new lattice data and performing a modified version of the original analysis. The analysis employs two high-intrinsic-scale observables, log(W11) and log(W12), and one lower-intrinsic-scale observable, log(W12=u60 ). We find good consistency among the values extracted using the different observables and a final result, as(MZ) = 0:11920:0011, in excellent agreement with various recent non-lattice determinations, as well as with the results of a similar, but not identical, re-analysis by the HPQCD collaboration. The relation between the two re-analyses is discussed, focussing on the complementarity of the two approaches.