Heavy sneutrinos as dark matter

Toby Falk, Keith A. Olive, Mark Srednicki

Research output: Contribution to journalArticlepeer-review

175 Scopus citations

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 {less-than or approximate} Ωνh2 {less-than or approximate} 1.0 for 550 GeV {less-than or approximate} mν {less-than or approximate} 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 Ων which is lower by a factor ranging from two to ten, depending on mν.

Original languageEnglish (US)
Pages (from-to)248-251
Number of pages4
JournalPhysics Letters B
Volume339
Issue number3
DOIs
StatePublished - Nov 17 1994

Bibliographical note

Funding Information:
This work was supported in part by DOE grant DE-FG02-94ER-40823 and NSF grant PHY-91-16964.

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