Neutralino dark matter with a Light Higgs

TL;DR

This paper explores how certain supersymmetric models with a light Higgs and nonuniversal Higgs masses can produce neutralino dark matter with detectable gamma-ray and antiproton signals, emphasizing the importance of detection uncertainties.

Contribution

It investigates neutralino dark matter in models with nonuniversal Higgs masses, highlighting the potential for indirect detection signals near the pseudoscalar A resonance.

Findings

Most of the A pole region yields detectable gamma-ray signals.

Antiproton signals are also promising in this region.

Detection results are sensitive to various uncertainties.

Abstract

We examine the neutralino dark matter phenomenology in supersymmetric scenarios with nonuniversal Higgs masses at the gauge coupling unification scale that can acommodate a light Higgs boson, where the correct relic density is obtained mostly through the annihilation into a pseudoscalar A. Our analysis shows that most part of the A pole region can produce detectable gamma-ray and antiproton signals. We further focus on uncertainties influencing the results in indirect and mainly direct detection.