Resonant dark matter
Resonant dark matter
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DOI：
10.1088/1126-6708/2009/11/052
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发表时间：
2009-09
影响因子：
5.4
通讯作者：
Yang Bai;P. Fox
中科院分区：
文献类型：
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作者：
Yang Bai;P. Fox
通常假设暗物质直接探测对大部分暗物质（DM）速度分布敏感。我们提出了暗物质核散射的另一种形式，由于在散射共振暗物质（rDM）中存在共振（DM-核束缚态），它仅探测窄范围的 DM 速度。散射截面变得高度依赖于元素，增加了调制，因此可以解释 DAMA/LIBRA 结果，同时不与其他直接检测实验相冲突。我们描述了一个实现 rDM 动力学的简单模型，其中 DM 是费米子弱三重态的中性成分，其带电伙伴的质量相差约 10 MeV。
It is usually assumed that dark matter direct detection is sensitive to a large fraction of the dark matter (DM) velocity distribution. We propose an alternative form of dark matter-nucleus scattering which only probes a narrow range of DM velocities due to the existence of a resonance, a DM-nucleus bound state, in the scattering - resonant dark matter (rDM). The scattering cross section becomes highly element dependent, has increased modulation and as a result can explain the DAMA/LIBRA results whilst not being in conflict with other direct detection experiments. We describe a simple model that realizes the dynamics of rDM, where the DM is the neutral component of a fermionic weak triplet whose charged partners differ in mass by approximately 10 MeV.