Recoil Detection of the Lightest Neutralino in MSSM Singlet Extensions

Abstract

We investigate the correlated predictions of singlet extended MSSM models for direct detection of the lightest neutralino with its cosmological relic density. To illustrate the general effects of the singlet, we take heavy sleptons and squarks. We apply LEP, $(g-2{)}_{\mu }$ and perturbativity constraints. We find that the WMAP upper bound on the cold dark matter density limits much of the parameter space to regions where the lightest neutralino can be discovered in recoil experiments. The results for the NMSSM and UMSSM are typically similar to the MSSM since their light neutralinos have similar compositions and masses. In the n/sMSSM the neutralino is often very light and its recoil detection is within the reach of the CDMS II experiment. In general, most points in the parameter spaces of the singlet models we consider are accessible to the WARP experiment.

30 pages, 11 figures

References in corpus (2)

• Gauge Singlet Scalars as Cold Dark Matter
• Collider Signatures of Singlet Extended Higgs Sectors

Cited by in corpus (6)

• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• A Supersymmetric U(1)' Model with Multiple Dark Matters
• Spin Dependence of Dark Matter Scattering
• Theoretical upper bound on the mass of the LSP in the MNSSM
• U(1)' solution to the mu-problem and the proton decay problem in supersymmetry without R-parity
• Particle Dark Matter Candidates