Gauge-invariant YFS exponentiation of (un)stable W+W- production at and beyond CERN LEP 2 energies

We present the theoretical basis and sample Monte Carlo data for the YFS exponentiated calculation of e(+)e(-)-->W+W---><f(1)(f)over bar (1)'> + <(f)over bar (2)f'(2)> at and beyond CERN LEP 2 energies, where the left-handed parts of f(1) and f(i)' are the respective upper and lower components of an SU(2)(L) doublet, i=1,2. The problem of gauge invariance of the radiation from the unstable charged spin 1 W-+/- is solved in an entirely physical manner. Our formulas are illustrated in a prototypical YFS Monte Carlo event generator YFSWW2, wherein both standard model and anomalous triple gauge boson couplings are allowed.