Charm quark effects on the strong coupling extracted from the static force

Abstract

We compute the fermionic contribution to the strong coupling ${\alpha }_{qq}$ extracted from the static force in Lattice QCD up to order $g^4$ in perturbation theory. This allows us to subtract the leading fermionic lattice artifacts from recent determinations of ${\alpha }_{qq}$ produced in simulations of two dynamical charm quarks. Moreover, by using a suitable parametrization of the ${\beta }_{qq}$-function, we can evaluate the charm loop effects on ${\alpha }_{qq}$ in the continuum limit.

8 pages, 2 figures; Proceedings of the 35th International Symposium on Lattice Field Theory, Granada, Spain

References in corpus (2)

• Lattice QCD with open boundary conditions and twisted-mass reweighting
• On the effects of heavy sea quarks at low energies

Cited by in corpus (2)

• Past, present, and future of precision determinations of the QCD coupling from lattice QCD
• Static Energy in ($2+1+1$)-Flavor Lattice QCD: Scale Setting and Charm Effects