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The determination of alpha_s(M_Z) via perturbative analyses ofshort-distance-sensitive lattice observables is revisited, incorporating newlattice data and performing a modified version of the original analysis. Theanalysis employs two high-intrinsic-scale observables, log (W_11) andlog(W_12), and one lower-intrinsic-scale observable, log(W_12/u_0^6). We findgood consistency among the values extracted using the different observables anda final result, alpha_s(M_Z)=0.1192(11), in excellent agreement with variousrecent non-lattice determinations, as well as with the results of a similar,but not identical, re-analysis by the HPQCD collaboration. The relation betweenthe two re-analyses is discussed, focussing on the complementarity of the twoapproaches.

The determination of alpha_s(M_z) from perturbative analyses of short-distance-sensitive lattice QCD observables revisited