Revival of the Thermal Sneutrino Dark Matter

Details Revival of the Thermal Sneutrino Dark Matter Revival of the Thermal Sneutrino Dark Matter

2007-02-21

arxiv.org/abs/hep-ph/0702223v2

Phys.Rev.D76:041302,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.76.041302

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.

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