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

来源：

PHYSICS LETTERS B | 1994年 / 339卷 / 03期

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

页码：248 / 251

页数：4

共 17 条

[1] LIMITS ON COLD DARK MATTER CANDIDATES FROM AN ULTRALOW BACKGROUND GERMANIUM SPECTROMETER [J].