Determination of the strong coupling alphas from the QCD static energy
Abstract
We obtain a determination of the strong coupling alphas in quantum chromodynamics, by comparing perturbative calculations for the short-distance part of the static energy with lattice computations. Our result reads alphas(1.5GeV)=0.3260.019, and when evolved to the scale MZ (the Z-boson mass) it corresponds to alphas(MZ)=0.1156+0.0021-0.0022.
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