Natural minimal dark matter

TL;DR

This paper proposes a supersymmetric minimal dark matter model that naturally protects the Higgs boson mass from large corrections, allowing for heavy dark matter candidates up to 15 TeV, thus addressing the little hierarchy problem.

Contribution

It introduces a supersymmetric framework for minimal dark matter that suppresses Higgs mass corrections to three-loop level, extending naturalness to higher dark matter masses.

Findings

Higgs mass corrections are suppressed to three-loop level.

Model accommodates dark matter masses up to 15 TeV.

Addresses the little hierarchy problem with a new naturalness approach.

Abstract

We show how the Higgs boson mass is protected from the potentially large corrections due to the introduction of minimal dark matter if the new physics sector is made supersymmetric. The fermionic dark matter candidate (a 5-plet of $SU(2)_L$) is accompanied by a scalar state. The weak gauge sector is made supersymmetric and the Higgs boson is embedded in a supersymmetric multiplet. The remaining standard model states are non-supersymmetric. Non vanishing corrections to the Higgs boson mass only appear at three-loop level and the model is natural for dark matter masses up to 15 TeV--a value larger than the one required by the cosmological relic density. The construction presented stands as an example of a general approach to naturalness that solves the little hierarchy problem which arises when new physics is added beyond the standard model at an energy scale around 10 TeV.