Virtual QCD corrections to gg → ZZ: top-quark loops from a transverse-momentum expansion-Reference-Cited by-同舟云学术

Virtual QCD corrections to gg → ZZ: top-quark loops from a transverse-momentum expansion

Published:2024-07-25 Issue:7 Volume:2024 Page:
ISSN:1029-8479
Container-title:Journal of High Energy Physics
language:en
Short-container-title:J. High Energ. Phys.

Author:

Degrassi Giuseppe^ORCID,Gröber Ramona^ORCID,Vitti Marco^ORCID

Abstract

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.

Publisher

Springer Science and Business Media LLC

Link

https://link.springer.com/content/pdf/10.1007/JHEP07(2024)244.pdf

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