Results on light dark matter particles with a low-threshold CRESST-II detector
Results on light dark matter particles with a low-threshold CRESST-II detector
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DOI：
10.1140/epjc/s10052-016-3877-3
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发表时间：
2016-01-20
影响因子：
4.4
通讯作者：
Zoeller, A.
中科院分区：
文献类型：
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作者：
Angloher, G.;Bento, A.;Zoeller, A.
CRESST-II 实验使用低温探测器来寻找 CaWO4 晶体中暗物质粒子弹性散射引起的核反冲事件。鉴于我们的探测器的低能量阈值与光目标核相结合，可以高灵敏度地探测低质量暗物质粒子。在这封信中，我们介绍了对应于 52 千克活日的单个探测器模块的数据结果。进行盲分析。核反冲的能量阈值为 307eV，我们大大增强了对光暗物质的灵敏度。因此，我们将直接暗物质实验的范围扩展到亚GeV/c(2)区域，并证明能量阈值是寻找低质量暗物质粒子的关键参数。
The CRESST-II experiment uses cryogenic detectors to search for nuclear recoil events induced by the elastic scattering of dark matter particles in CaWO4 crystals. Given the low energy threshold of our detectors in combination with light target nuclei, low mass dark matter particles can be probed with high sensitivity. In this letter we present the results from data of a single detector module corresponding to 52 kg live days. A blind analysis is carried out. With an energy threshold for nuclear recoils of 307eV we substantially enhance the sensitivity for light dark matter. Thereby, we extend the reach of direct dark matter experiments to the sub-GeV/c(2) region and demonstrate that the energy threshold is the key parameter in the search for low mass dark matter particles.