%0 Conference Paper
%A Verduras Schaeidt, Alain
%A Braathen, Johannes
%A Egle, Felix
%T Two-Loop Corrections to Trilinear Higgs Couplings in Higgs BSM models
%M PUBDB-2025-01794
%D 2025
%X The precise determination of the Higgs self-couplings is an essential task for understanding electroweak symmetry breaking and probing physics beyond the Standard Model (SM). The calculation of two-loop corrections is important to provide a critical test of the perturbative stability, especially in the case of large one-loop corrections that can occur in scenarios with extended scalar sectors. Morever, they need to be taken into account for the future perspective of precisely measuring the Higgs self-couplings. In this talk, we will present our work on the leading two-loop corrections to the trilinear Higgs couplings in the two-Higgs-doublet model (THDM) and other models beyond the SM. We focus in particular on the couplings hhh, hhH , which are the most important for di-Higgs production at the (HL-)LHC. We will discuss the technical details of the calculation, in particular concerning the renormalization of the alignment limit, and briefly illustrate the phenomenological impact of our results.
%B KUTS14
%C 7 Apr 2025 - 9 Apr 2025, Freiburg (Germany)
Y2 7 Apr 2025 - 9 Apr 2025
M2 Freiburg, Germany
%F PUB:(DE-HGF)6
%9 Conference Presentation
%U https://bib-pubdb1.desy.de/record/629281