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- Title
Three-gluon running coupling from lattice QCD at N = 2 + 1 + 1: a consistency check of the OPE approach.
- Authors
Boucaud, Ph.; Brinet, M.; Soto, F.; Morenas, V.; Pène, O.; Petrov, K.; Rodríguez-Quintero, J.
- Abstract
We present a lattice calculation of the renormalized running coupling constant in symmetric (MOM) and asymmetric $ \left( {\widetilde{\mathrm{MOM}}} \right) $ momentum substraction schemes including u, d, s and c quarks in the sea. An Operator Product Expansion dominated by the dimension-two 〈 A〉 condensate is used to fit the running of the coupling. We argue that the agreement in the predicted 〈 A〉 condensate for both schemes is a strong support for the validity of the OPE approach and the effect of this non-gauge invariant condensate over the running of the strong coupling.
- Publication
Journal of High Energy Physics, 2014, Vol 2014, Issue 4, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP04(2014)086