Neutrino sector impacts SUSY dark matter
Neutrino sector impacts SUSY dark matter
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中微子扇区影响 SUSY 暗物质
DOI：
10.1016/j.physletb.2008.06.010
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发表时间：
2008
影响因子：
4.4
通讯作者：
A. Mustafayev
中科院分区：
文献类型：
--
作者：
V. Barger;D. Marfatia;A. Mustafayev
基于中微子质量大的事实，我们在超对称跷跷板的框架下研究了中微子汤川耦合对中微子暗物质可观测量的影响。我们发现，中微子耦合显着影响的参数空间中的软超对称破slepton质量和/或三线性耦合大的区域中的neutralino遗迹密度。根据耦合的大小，中性伴子遗迹密度在mSUGRA的A-漏斗、焦点和停止共湮灭区域跨越一个数量级。我们还表明，暗物质的检测率可以修改高达几个数量级。
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.