HEAVY SNEUTRINOS AS DARK-MATTER

被引:198
作者
FALK, T [1 ]
OLIVE, KA [1 ]
SREDNICKI, M [1 ]
机构
[1] UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455
基金
美国国家科学基金会;
关键词
D O I
10.1016/0370-2693(94)90639-4
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 similar to Omega(($) over tilde nu)h(2) less than or similar to 1.0 for 550 GeV less than or similar to m(($) over tilde nu) less than or similar to 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 Omega(($) over tilde nu) which is lower by a factor ranging from two to ten, depending on m(less than or similar to nu).
引用
收藏
页码:248 / 251
页数:4
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