Extended scalar sectors at future colliders

TL;DR

This paper discusses the potential to test extended scalar sector models beyond the Standard Model at future collider experiments, including high-luminosity LHC and future lepton colliders, to determine if the Higgs sector is more complex.

Contribution

It provides an overview of how future colliders can probe extended scalar sectors, highlighting the importance of these experiments in understanding the Higgs boson’s nature.

Findings

Future colliders can significantly improve sensitivity to extended scalar sectors.

Probing scalar sectors at 27 and 100 TeV colliders enhances discovery prospects.

Lepton colliders offer complementary tests of scalar sector extensions.

Abstract

After the discovery of the Higgs boson in 2012, particle physics has entered an exciting era. An important question is whether the Standard Model of particle physics correctly describes the scalar sector realized by nature, or whether it is part of a more extended model, featuring additional particle content. A prime way to test this is to probe models with extended scalar sectors at future collider facilities. We here discuss such models in the context of high-luminosity LHC, a possible proton-proton collider with 27 and 100 TeV center-of-mass energy, as well as future lepton colliders with various center-of-mass energies.