Charm quark effects on the strong coupling extracted from the static force*
University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
2 University of Wuppertal, Gauβstr. 20, 42119 Wuppertal, Germany
** Speaker, e-mail: email@example.com
Published online: 26 March 2018
We compute the fermionic contribution to the strong coupling αqq extracted from the static force in Lattice QCD up to order g4 in perturbation theory. This allows us to subtract the leading fermionic lattice artifacts from recent determinations of αqq produced in simulations of two dynamical charm quarks.
Moreover, by using a suitable parametrization of the βqq-function, we can evaluate the charm loop effects on αqq in the continuum limit.
Talk given at the 35th International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain. The title of the talk at the conference was “Computation of αqq in QCD (Nf = 2) using Lattice Perturbation Theory”.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).