Neutralino dark matter detection beyond the MSSM

TL;DR

This paper explores how extending the MSSM with non-renormalizable Higgs terms impacts neutralino dark matter detection, revealing new viable regions and assessing detection prospects via direct detection and gamma-ray signals.

Contribution

It introduces non-renormalizable Higgs interactions to the MSSM, expanding the parameter space for neutralino dark matter compatible with observations and analyzing detection prospects.

Findings

New regions for neutralino relic abundance are permitted.

Direct detection prospects in XENON-like experiments are evaluated.

Gamma-ray detection potential with FERMI is studied.

Abstract

The addition of non-renormalizable terms involving the Higgs fields to the MSSM ameliorates the little hierarchy problem of the MSSM. For neutralino dark matter, new regions for which the relic abundance of the LSP is consistent with WMAP (as the bulk region and the stop coannihilation region) are now permitted. In this framework, we analyze in detail first the direct dark matter detection prospects in a XENON-like experiment; then we study the capability of detecting gamma-rays produced in the annihilation of neutralino LSPs in the FERMI satellite.