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- Title
Virtual QCD corrections to gg → ZZ: top-quark loops from a transverse-momentum expansion.
- Authors
Degrassi, Giuseppe; Gröber, Ramona; Vitti, Marco
- Abstract
We present the virtual corrections due to the top-quark loops for the process gg → ZZ at next-to-leading order in QCD. The associated two-loop box diagrams are computed using a small-transverse-momentum expansion. Our results are then merged with those available in the complementary energy region, obtained via a high-energy expansion, in order to provide an analytic result that is valid in the whole phase space. The results presented allow for an efficient modelling of the signal-background interference as well as the irreducible background in off-shell Higgs production.
- Publication
Journal of High Energy Physics, 2024, Vol 2024, Issue 7, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP07(2024)244