Precision predictions for trilinear scalar couplings and Higgs pair production in models with extended scalar sectors

TL;DR

This paper reviews recent advances in precise theoretical predictions of trilinear scalar couplings and Higgs pair production in models with extended scalar sectors, crucial for understanding the Higgs potential.

Contribution

It summarizes recent progress in high-precision calculations of Higgs-related processes in BSM models with extended scalar sectors.

Findings

Enhanced precision in predicting trilinear scalar couplings.

Improved theoretical predictions for Higgs pair production at the HL-LHC.

Insights into probing BSM physics through Higgs potential measurements.

Abstract

Reconstructing the shape of the Higgs potential realised in Nature is one of the most pressing tasks of current and future colliders. This will offer deep insights into the dynamics of the electroweak phase transition and provide a unique opportunity to probe physics beyond the Standard Model (BSM). In this context, it is essential to have precise theory predictions for trilinear scalar couplings, which control the form of the potential, and for Higgs pair production processes, which are the observables that allow accessing the trilinear couplings. I summarise in these proceedings recent progress in precision calculations of both trilinear scalar couplings and Higgs pair production at the (HL-)LHC in BSM models with extended scalar sectors.