Speaker
Description
The trilinear Higgs coupling is a crucial tool to investigate the structure of the Higgs sector and the nature of the electroweak phase transition, and to probe the parameter space of Beyond-the-Standard-Model (BSM) theories. The vast number of BSM models for which it is relevant to compute the trilinear coupling motivates the automation of its calculation. While calculations are possible at one loop for arbitrary theories using the public code anyH3, at two loops only a handful of model-specific results are available – but in these cases, their inclusion is known to be important.
In this talk, I will present new two-loop results for the trilinear Higgs coupling in generic renormalisable theories. After explaining the setup of our calculation, I will show how we can map our generic expressions onto arbitrary theories. I will review the different checks performed on the new expressions, as well as examples of new results. I will end with some words on possible further steps.
