Gluon propagator, triple gluon vertex and the QCD coupling constant
D. Becirevic, Ph. Boucaud, J. P. Leroy, J. Micheli, O. Pene, J. Rodriguez-Quintero, C. Roiesnel
Abstract
We study the UV-scaling of the flavorless gluon propagator in the Landau gauge in an energy window up to 9 GeV. Dominant hypercubic lattice artifacts are eliminated. A large set of renormalization schemes is used to test asymptotic scaling. We compare with our results obtained directly from the triple gluon vertex. We end-up with ΛMS = 318(12)(5) MeV and 292(5)(15) MeV respectively for these two methods, compatible which each other but significantly above the Schrodinger method estimate.
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