Blossier, B.Boucaud, Ph.Brinet, M.Rodríguez Quintero, José2020-07-202020-07-202014-05Blossier, B., Boucaud, P., Brinet, M. ... Rodríguez Quintero, J. (2014). Testing the operator product expansion Wilson coefficient forA2from lattice QCD with a dynamical charm. Physical Review D, 87(7). DOI: https://doi.org/10.1103/physrevd.87.0740332470-0010http://hdl.handle.net/10272/18566Gluon and ghost propagators data, obtained in Landau gauge from lattice simulations with two light and two heavy dynamical quark flavours (Nf=2+1+1), are described here with a running formula including a four-loop perturbative expression and a nonperturbative OPE correction dom- inated 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 ex- pressions that, after being properly renormalized, are known at O( 4). As also ms is rather well known for Nf=2+1+1, this allows for a precise consistency test of the OPE approach in the joint description of different observables.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/OPEWilson coefficientLattice QCDQCDDynamical charmjournal article10.1103/PhysRevD.87.074033open access