Status of alpha_s determinations from the non-perturbatively renormalised three-gluon vertex

B. Alles; C. Parrinello; C. Pittori; D. G. Richards; H. Panagopoulos

arxiv: hep-lat/9710053 · v1 · submitted 1997-10-13 · ✦ hep-lat · hep-ph

Status of alpha_s determinations from the non-perturbatively renormalised three-gluon vertex

B. Alles , H. Panagopoulos , C. Parrinello , C. Pittori , D. G. Richards This is my paper

classification ✦ hep-lat hep-ph

keywords alphalatticethree-gluonvertexappearartifactsasymptoticbeta

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We demonstrate the feasibility of computing alpha_s from the lattice three-gluon vertex in the Landau gauge. Data from 16^4 and 24^4 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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Status of alpha_s determinations from the non-perturbatively renormalised three-gluon vertex

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