CDMS II result and Light Higgs Boson Scenario of the MSSM

TL;DR

This paper explores the possibility that the dark matter candidate suggested by CDMS II events can be explained by a light Higgs boson scenario in the MSSM, resulting in a neutralino dark matter with detectable scattering cross sections.

Contribution

It demonstrates that a light Higgs boson scenario in the MSSM can naturally produce neutralino dark matter consistent with CDMS II observations.

Findings

Neutralino dark matter can have a mass of 10-100 GeV.

The light Higgs boson can be lighter than 114.4 GeV.

The scenario predicts a large scattering cross section with nucleons.

Abstract

The CDMS Collaboration has reported two candidate events for dark matter. If the events are due to the elastic scattering of dark matter, the dark matter would be a WIMP dark matter with its mass of the order of 10-100GeV and its scattering cross section with a nucleon is about 10^-43cm^2. We show that such a dark matter is properly realized as a neutralino dark matter in the light higgs boson scenario of the MSSM. The lightest higgs boson mass can be lighter than 114.4GeV in the scenario because of a suppressed interaction between higgs boson and Z bosons. As a result, a large scattering cross section between the dark matter and ordinary matter is obtained.