TY - JOUR
T1 - Heavy sneutrinos as dark matter
AU - Falk, Toby
AU - Olive, Keith A.
AU - Srednicki, Mark
N1 - Funding Information:
This work was supported in part by DOE grant DE-FG02-94ER-40823 and NSF grant PHY-91-16964.
PY - 1994/11/17
Y1 - 1994/11/17
N2 - 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.
AB - 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.
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U2 - 10.1016/0370-2693(94)90639-4
DO - 10.1016/0370-2693(94)90639-4
M3 - Article
AN - SCOPUS:0001737508
VL - 339
SP - 248
EP - 251
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 3
ER -