Preprint
Oct 2026
Two-loop helicity amplitudes for $gg\to W^+W^-$ using high-energy and forward expansions
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 approach relies on combining expansions valid in different regions of phase space. Specifically, we perform a high-energy expansion in which the M...
M. Czaja, Ben Rott, Matthias Steinhauser et al.
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