Direct constraints on charged excitations of dark matter.
Direct constraints on charged excitations of dark matter.
复制标题
对暗物质带电激发的直接约束。
DOI：
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发表时间：
2012
影响因子：
8.6
通讯作者：
J. Pradler
中科院分区：
文献类型：
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作者：
H. An;M. Pospelov;J. Pradler
如果弱尺度暗物质的中性成分伴随着由小于~20 MeV的质量间隙分离的带电激发，则弱相互作用大质量粒子（WIMP）可以与核形成稳定的束缚态。我们表明，在实验中寻找中微子双β衰变的最新进展设置的第一个直接约束的放能反应的WIMP核束缚态的形成。我们计算了这样一个过程中的代表性模型的速率，并表明双β衰变实验提供了独特的灵敏度大部分的参数空间的WIMP双峰模型，补充宇宙学和直接对撞机搜索所施加的约束。
If the neutral component of weak-scale dark matter is accompanied by a charged excitation separated by a mass gap of less than ~20 MeV, weakly interacting massive particles (WIMPs) can form stable bound states with nuclei. We show that the recent progress in experiments searching for neutrinoless double-beta decay sets the first direct constraint on the exoergic reaction of WIMP-nucleus bound state formation. We calculate the rate for such a process in representative models and show that the double-beta decay experiments provide unique sensitivity to a large fraction of parameter space of the WIMP doublet model, complementary to constraints imposed by cosmology and direct collider searches.