%0 Journal Article
%A de Soto, Feliciano
%A Blossier, B.
%A Boucaud, P.
%A Brinet, M.
%A Morenas, V.
%A Pène, O.
%A Petrov, K.
%A Rodríguez-Quintero, J.
%T Testing the operator product expansion Wilson coefficient for A2 from lattice QCD with a dynamical charm
%D 2013
%@ 1550-7998
%U http://hdl.handle.net/10433/999
%X Gluon and ghost propagators, obtained in Landau gauge from lattice simulations with two light two heavy dynamical quark flavors (Nf=2+1+1), are described here with a running formula including a four-loop perturbative expression and a nonperturbative operator product expansion correction dominated by the local operator A2. The Wilson coefficients and their variation as a function of the coupling constant are extracted from the numerical data and compared with the theoretical expressions that, after being properly renormalized, are known at O(¿4). As ¿MS¯¯¯¯¯¯ is also rather well known for Nf=2+1+1, this allows for a precise consistency test of the operator product expansion approach in the joint description of different observables.
%K Lattice
%K Gluon propagators
%K Ghost propagators
%~