2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187056We present the theoretical basis and sample Monte Carlo data for the YFS exponentiated calculation of $e^+e^- \rightarrow W^+ W^- \rightarrow f_1\bar f'_1 + \bar f_2 f'_2$ at and beyond LEP2 energies, where the left-handed parts of $f_i$ and $f'_i$ are the respective upper and lower components of an $SU_{2L}$ doublet, $i=1,2$. The problem of gauge invariance of the radiation from the unstable charged spin~1 $W^{\pm}$ is solved in an entirely physical manner. Our formulas are illustrated in a proto-typical YFS Monte Carlo event generator YFSWW2, wherein both Standard Model and anomalous triple gauge boson couplings are allowed.Latex replaces postscript, 17 pagesHigh Energy Physics - Phenomenologytext