W-boson pair production at lepton colliders in the Feynman-diagram gauge

Hiroyuki Furusato, Kentarou Mawatari, Yutaro Suzuki +1

We calculate helicity amplitudes for $e^{-}{e}^{+}\to W^{-}{W}^{+}$ analytically in the Feynman-diagram (FD) gauge. We show that, unlike in the unitary gauge, there is no energy growth of the…