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arXiv · hep-ph/9409270

Heavy Sneutrinos as Dark Matter

Toby Falk·Keith A. Olive·Mark Srednicki
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Abstract

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 $0.1\ltwidΩ_{\sn}h^2\ltwid 1.0$ for $550\gev\ltwid\msn\ltwid 2300\gev$. For nominal values of the parameters of our galactic halo, recent results from the Heidelberg--Moscow direct detection experiment set an upper limit on $Ω_{\sn}$ which is lower by a factor ranging from two to ten, depending on $\msn$.

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Toby Falk, Keith A. Olive, Mark Srednicki. 1994-09-09. Heavy Sneutrinos as Dark Matter. https://doi.org/10.1016/0370-2693(94)90639-4

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