Dark matter and Higgs boson physics

TL;DR

This paper explores how adding specific fermions to the Standard Model can explain dark matter and influence Higgs boson physics, focusing on the lightest neutral particle below the W mass.

Contribution

It introduces a model with a vector-like fermion doublet and singlet that unifies dark matter explanation with gauge coupling unification.

Findings

Lightest neutral particle mass range below W mass analyzed

Potential significant effects on Higgs boson physics identified

Model supports consistent dark matter interpretation

Abstract

A vector-like colorless fermion doublet and a singlet added to the Standard Model allow a consistent interpretation of dark matter in terms of the lightest neutral particle, as they may help in obtaining successful gauge coupling unification. We analyze in detail the mass range of the lightest neutral particle below the W mass, i.e. in a range of the parameters where the physics of the Standard Model Higgs boson may be substantially affected either directly or indirectly.