The Higgs singlet extension at LHC Run 2

TL;DR

This paper reviews the current theoretical and experimental constraints on the Higgs singlet extension of the Standard Model, focusing on the second Higgs boson up to 1 TeV and electroweak corrections to specific decay processes.

Contribution

It provides a comprehensive analysis of constraints and electroweak corrections in the Higgs singlet extension, highlighting new insights into the model's parameter space.

Findings

Mass range for the second Higgs up to 1 TeV constrained by collider data

Electroweak corrections to H to hh decay calculated within the model

Current experimental limits restrict the parameter space of the Higgs singlet extension

Abstract

We discuss the current status of theoretical and experimental constraints on the real Higgs singlet extension of the Standard Model. For the second neutral (non-standard) Higgs boson the mass range up to 1 TeV accessible at past and current collider experiments is considered. We furthermore discuss electroweak corrections to the H to hh partial decay width within this model.