Neutrino sector impacts SUSY dark matter

被引：28

作者：

Barger, Vernon ^{[2
,3
]}

Marfatia, Danny ^{[1
,3
]}

Mustafayev, Azar ^{[1
,3
]}

机构：

[1] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[2] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[3] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICS LETTERS B | 2008年 / 665卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.physletb.2008.06.010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Motivated by the fact that neutrinos are massive, we study the effect of neutrino Yukawa couplings on neutralino dark matter observables within the framework of a supersymmetric seesaw. We find that neutrino couplings significantly affect the neutralino relic density in regions of parameter space where soft SUSY-breaking slepton masses and/or trilinear couplings are large. Depending on the size of the couplings, the neutralino relic density spans over an order of magnitude in the A-funnel, focus point and stop-coannihilation regions of mSUGRA. We also show that dark matter detection rates can be modified by up to several orders of magnitude. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：242 / 251

页数：10

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