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.
