SUSY dark matter in light of CDMS II results: a comparative study for different models

TL;DR

This study compares neutralino dark matter scattering predictions across MSSM, NMSSM, and nMSSM models, analyzing how recent CDMS II results constrain their parameter spaces and exploring future detection prospects.

Contribution

It provides a comprehensive comparison of dark matter scattering predictions in three supersymmetric models considering current experimental constraints and future detection capabilities.

Findings

CDMS II results exclude significant parameter regions in all models.

MSSM and NMSSM have similar allowed parameter space properties.

Future SuperCDMS can probe most of the remaining parameter space.

Abstract

We perform a comparative study of the neutralino dark matter scattering on nucleon in three popular supersymmetric models: the minimal (MSSM), the next-to-minimal (NMSSM) and the nearly minimal (nMSSM). First, we give the predictions of the elastic cross section by scanning over the parameter space allowed by various direct and indirect constraints, which are from the measurement of the cosmic dark matter relic density, the collider search for Higgs boson and sparticles, the precision electroweak measurements and the muon anomalous magnetic moment. Then we demonstrate the property of the allowed parameter space with/without the new limits from CDMS II. We obtain the following observations: (i) For each model the new CDMS limits can exclude a large part of the parameter space allowed by current collider constraints; (ii) The property of the allowed parameter space is similar for MSSM and NMSSM, but quite different for nMSSM; (iii) The future SuperCDMS can cover most part of the allowed parameter space for each model.