Status of alphas determinations from the non-perturbatively renormalised three-gluon vertex
B. Alles, H. Panagopoulos, C. Parrinello, C. Pittori, D. G. Richards
Abstract
We demonstrate the feasibility of computing alphas from the lattice three-gluon vertex in the Landau gauge. Data from 164 and 244 quenched lattices at beta=6.0 are presented. Our main result is that 2-loop asymptotic scaling is observed for momenta in the range 1.8-2.3 Gev, where lattice artifacts appear to be under control.
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