Heavy sneutrinos as dark matter

1994/09/09 by Toby Falk, Keith A. Olive, Mark Srednicki · 9 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1016/0370-2693(94)90639-4

published as Phys.Lett.B339:248-251,1994 · 7 pages in LaTeX, plus 1 uuencoded figure (uses epsf), UCSBTH--94--29, UMN--TH--1306/94

arxiv created 1994/09/09 · openalex publication_date 1994/11/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

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_\snh²\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.

Cited by

• Indirect detection of dark matter weakly interacting massive particles in a liquid argon time projection chamber
• SupersymmetricU(1)′model with multiple dark matters
• Revival of the thermal sneutrino dark matter
• Ultra High Energy Cosmic Rays from decays of Holeums in Galactic Halos
• Right-handed sneutrinos as nonthermal dark matter
• Dark-matter in gravity-mediated supersymmetry breaking
• Enhancing dark matter annihilation into neutrinos
• Neutralino–proton cross sections in supergravity models
• Low-energy supersymmetry and its phenomenology