Well-Mixed Dark Matter and the Higgs

TL;DR

This paper explores models where electroweak symmetry breaking leads to well-mixed neutralino dark matter with relic density and scattering properties consistent with current data, predicting a Higgs mass around 125-126 GeV.

Contribution

It demonstrates that RG flow in MSSM-like models can produce well-mixed neutralino dark matter with observable implications for collider and direct detection experiments.

Findings

Relic density matches WMAP data.

Predicted Higgs mass is 125-126 GeV.

Models are testable by LHC and future dark matter searches.

Abstract

The breaking of electroweak symmetry through renormalization group flow in models that have MSSM spectra is found to produce "well-mixed" neutralino dark matter with a relic density consistent with the WMAP data and elastic scattering cross section with nuclei consistent with current limits from direct dark matter searches. These models predict a Higgs boson mass in the range (125-126) GeV. Well-mixed neutralino dark matter is predominantly bino-like, but has significant Higgsino and wino content, each with fractions of comparable size. With a ~1 TeV gluino mass and sizable neutralino-nucleon scattering cross sections, natural models will be fully tested by both the LHC and future dark matter direct detection experiments.