Quark-gluon vertex in a momentum subtraction scheme
High Energy Physics - Lattice
2010-03-04 v1 High Energy Physics - Phenomenology
Abstract
We compute the quark-gluon vertex in quenched QCD, in the Landau gauge using an off-shell mean-field O(a)-improved fermion action. The running coupling is calculated in an `asymmetric' momentum subtraction scheme (MOM~). We obtain a crude estimate for Lambda_MSbar=170+/-65 MeV, which is considerably lower than other determinations of this quantity. However, substantial systematic errors remain.
Keywords
Cite
@article{arxiv.hep-lat/0109027,
title = {Quark-gluon vertex in a momentum subtraction scheme},
author = {J. Skullerud and A. Kizilersu and A. G. Williams},
journal= {arXiv preprint arXiv:hep-lat/0109027},
year = {2010}
}
Comments
Lattice2001(improvement); 3 pages, 3 figures