6–11 Jul 2025
PALAIS DU PHARO, Marseille, France
Europe/Paris timezone

Towards HH at NNLO QCD: the $n_h^2$ contribution

8 Jul 2025, 10:00
20m
PALAIS DU PHARO, Marseille, France

PALAIS DU PHARO, Marseille, France

Parallel T08 - Higgs Physics T08

Speaker

Marco Vitti (Karlsruhe Institute of Technology - TTP and IAP)

Description

The virtual corrections for $gg \to HH$ at NLO QCD have been efficiently approximated using a Taylor expansion in the limit of a forward kinematics. The same method has been recently applied to the calculation of a subset of the NNLO corrections, which are desirable given the significant impact, at NLO, of the uncertainty due to the choice of the top mass renormalization scheme. In this talk, I will report on the progress in the calculation of another contribution at NNLO, given by diagrams in which the two Higgs bosons couple to different top quark loops. For this contribution a naive Taylor expansion cannot be used, and I will instead discuss an approach based on asymptotic expansions in different kinematic limits.

Secondary track T05 - QCD and Hadronic Physics

Author

Marco Vitti (Karlsruhe Institute of Technology - TTP and IAP)

Presentation materials

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