Revival of the Thermal Sneutrino Dark Matter

Abstract

The left-handed sneutrino in the Minimal Supersymmetric Standard Model (MSSM) has been ruled out as a viable thermal dark matter candidate, due to conflicting constraints from direct detection experiments and from the measurement of the dark matter relic density. The intrinsic fine-tuning problem of the MSSM, however, motivates an extension with a new U(1)' gauge symmetry. We show that in the U(1)'-extended MSSM the right-handed sneutrino becomes a good thermal dark matter candidate. We identify two generic parameter space regions where the combined constraints from relic density determinations, direct detection and collider searches are all satisfied.

5 pages, 3 figures. Version to appear in Phys. Rev. D

References in corpus (3)

• Right-Handed Sneutrino as Cold Dark Matter of the Universe
• Right-handed Sneutrinos as Nonthermal Dark Matter
• Anatomy of F_D-Term Hybrid Inflation

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