用NEWS-G寻找轻暗物质
Search for light dark matter with NEWS-G
摘要：
NEWS-G合作项目正在使用球形正比计数器寻找轻暗物质候选者。轻气体，如氢，氦和氖，被用作目标，提供0.1-10 GeV质量范围的访问。在莫达内地下实验室，用直径为60厘米的探测器SEDINE获得的第一批结果显示，对于质量为0.5 GeV的候选物质，核子-暗物质相互作用截面的置信度上限为90%，为4.4 × 10^{37} cm ^2。最近的发展，在几个方面的探测器仪器，随着建设一个新的，140厘米的直径，探测器与新的紧凑的屏蔽。
英文摘要：
The NEWS-G collaboration is searching for light dark matter candidates using a spherical proportional counter. Light gases, such as hydrogen, helium, and neon, are used as targets, providing access in the 0.1-10 GeV mass range. First results obtained with SEDINE, a 60 cm in diameter detector, in the Underground Laboratory of Modane yielded a 90% confidence level upper limit of 4.4x 10^{37} cm^2 on the nucleon-dark matter interaction cross-section for a candidate with 0.5 GeV mass. Recent developments in several aspects of the detector instrumentation are presented, along with the construction of a new, 140 cm in diameter, detector with new compact shielding.
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