Higgsino Dark Matter in Nonuniversal Gaugino Mass Models

TL;DR

This paper investigates nonuniversal gaugino mass models predicting higgsino dark matter, consistent with observed relic density and Higgs mass, with testable predictions for LHC and dark matter experiments.

Contribution

It introduces two simple nonuniversal gaugino mass models that naturally produce higgsino dark matter compatible with current observations.

Findings

Higgsino mass around 1 TeV explains dark matter relic density.

Gluino masses in the 2-3 TeV range are consistent with models.

Parts of the parameter space are accessible to 14 TeV LHC experiments.

Abstract

We study two simple and well motivated nonuniversal gaugino mass models, which predict higgsino dark matter. One can account for the observed dark matter relic density along with the observed Higgs boson mass of ~ 125 GeV over a large region of the parameter space of each model, corresponding to higgsino mass of ~ 1 TeV. In each case this parameter region covers the gluino mass range of 2-3 TeV, parts of which can be probed by the 14 TeV LHC experiments. We study these model predictions for LHC in brief and for dark matter detection experiments in greater detail.