Heavy Sneutrinos as Dark Matter


We calculate the relic density of very heavy, stable scalar neutrinos in the minimal supersymmetric standard model. We include all two-body final states, as well as the effects of co-annihilation with scalar electrons. We find that the sneutrino relic density is in the cosmologically interesting region 0.1 <∼ Ων̃h 2 <∼ 1.0 for 550GeV <∼ mν̃ <∼ 2300GeV. For… (More)

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