Neutralino dark matter and naturalness of the electroweak scale

TL;DR

This paper examines how neutralino dark matter and experimental constraints challenge the naturalness of minimal and non-minimal supersymmetric models in explaining the electroweak scale.

Contribution

It analyzes the impact of dark matter detection limits on the naturalness of various SUSY models, highlighting a notable exception.

Findings

Stringent bounds from dark matter experiments constrain minimal SUSY models.

Non-minimal SUSY models generally face similar naturalness issues.

An exception exists where certain non-minimal models can better address these constraints.

Abstract

If weak scale supersymmetry (SUSY) is to somehow explain the radiative stability of the Higgs boson mass, it is likely that non-minimal variants of SUSY models should be considered. Under the assumption that the dark matter of the universe is comprised of neutralinos, recent limits from direct detection experiments as well as dark matter abundance measurements place stringent bounds on the naturalness of minimal supersymmetric models. We show that even non-minimal models introducing moderately decoupled new physics in order to address the Higgs boson mass problem face similar issues, with one interesting exception.