Direct measurement of αQED(mZ 2) at the FCC-ee

When the measurements from the FCC-ee become available, an improved determination of the standard-model input parameters will be needed to fully exploit the new precision data towards either constraining or fitting the parameters of beyond-the-standard-model theories. Among these input parameters is the electromagnetic coupling constant estimated at the Z mass scale, alpha(QED)(m(Z) (2)). The measurement of the muon forwardbackward asymmetry at the FCC-ee, just below and just above the Z pole, can be used to make a direct determination of alpha(QED)(m (Z) (2)) with an accuracy deemed adequate for an optimal use of the FCC-ee precision data.