Absorption of sub-MeV fermionic dark matter by electron targets
Absorption of sub-MeV fermionic dark matter by electron targets
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DOI：
10.1103/physrevd.103.035001
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发表时间：
2020-11
影响因子：
5
通讯作者：
J. A. Dror;Gilly Elor;R. McGehee;T. Yu
中科院分区：
文献类型：
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作者：
J. A. Dror;Gilly Elor;R. McGehee;T. Yu
我们研究一类新的信号，其中费米暗物质被吸收的束缚电子目标。直接探测和中微子实验中的费米吸收信号对亚MeV质量的暗物质很敏感，探测了一个参数空间区域，在这个区域中，暗物质是很难探测到的。我们计算了氙基探测器的速率和能量沉积谱，为当前和未来的实验做了预测。我们提出了两种可能的模型，显示费米吸收的电子和研究的检测前景的其他限制。
We study a new class of signals where fermionic dark matter is absorbed by bound electron targets. Fermionic absorption signals in direct detection and neutrino experiments are sensitive to dark matter with sub-MeV mass, probing a region of parameter space in which dark matter is otherwise challenging to detect. We calculate the rate and energy deposition spectrum in xenon-based detectors, making projections for current and future experiments. We present two possible models that display fermionic absorption by electrons and study the detection prospects in light of other constraints.