Analytic approximations for double Higgs production at the LHC

by Kay Schönwald (Uni Zürich)

Tuesday 13 May 2025, 11:00 → 12:30 Europe/Berlin

Seminar room, 1st floor (01-03) (HLL)

In this talk I will present recent efforts to calculate analytic approximations for double Higgs production at the LHC, concentrating on the virtual corrections to the gluon fusion channel. On the one hand, I will report on recent results on electro-weak corrections to this process at NLO. On the other hand, I discuss the extension of the calculation to NNLO QCD, which is crucial to address large uncertainties stemming from the top quark mass renormalization. The methods I discuss are based on analytic expansions in forward kinematics and the high-energy limit, which can be effectively matched to cover the whole kinematic region of the process. The results are important for the precise determination of the Higgs self coupling in the future, but are also applicable to a wide range of other collider signatures.