Two-loop helicity amplitudes for $gg\to W^{+}{W}^{-}$ using high-energy and forward expansions

Mateusz Czaja, Ben Rott, Matthias Steinhauser +1

We calculate next-to-leading order QCD corrections for the process $gg\to W^{+}{W}^{-}$ with two off-shell $W$ bosons, accounting for virtual top quarks in the loop diagrams. Our approa…