Search for Cosmic-Ray Boosted Sub-GeV Dark Matter at the PandaX-II Experiment.

IF 8.1 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2021-12-16 DOI:10.1103/PhysRevLett.128.171801

Xiaohui Cui, A. Abdukerim, Zihao Bo, Wei Chen, Xun Chen, Yunhua Chen, Chen Cheng, Yun-Zhong Cheng, Yingjie Fan, D. Fang, C. Fu, M. Fu, Li-Hui Geng, K. Giboni, L. Gu, Xuyuan Guo, Kyong Chol Han, C. He, Jinrong He, D. Huang, Yanlin Huang, Zhou Huang, Ruquan Hou, X. Ji, Y. Ju, Chenxiang Li, Mingchuan Li, Shu Li, Shuaijie Li, Qingjie Lin, Jianglai Liu, Xiaoying Lu, Ling-Zhi Luo, Wenbo Ma, Y. Ma, Y. Mao, Y. Meng, N. Shaheed, X. Ning, N. Qi, Zhicheng Qian, X. Ren, C. Shang, Guofang Shen, L. Si, Wen-wei Sun, A. Tan, Yinyong Tao, Anqing Wang, Meng Wang, Qiuhong Wang, Shaobo Wang, Siguang Wang, Zhou Wang, Wei Wang, Xiuli Wang, Mengmeng Wu, Weihao Wu, Jingkai Xia, M. Xiao, Xi Xiao, P. Xie, B. Yan, Xiyu Yan, Jijun Yang, Yong Yang, Chun-xu Yu, J. Yuan, Ying Yuan, Dan Zhang, Minzhen Zhang, Peng Zhang, Tao Zhang, Li Zhao, Q. Zheng, Jifang Zhou, N. Zhou, Xiaopeng Zhou, Yong Zhou

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引用次数: 20

Abstract

We report a novel search for the cosmic-ray boosted dark matter using the 100 tonne·day full dataset of the PandaX-II detector located at the China Jinping Underground Laboratory. With the extra energy gained from the cosmic rays, sub-GeV dark matter particles can produce visible recoil signals in the detector. The diurnal modulations in rate and energy spectrum are utilized to further enhance the signal sensitivity. Our result excludes the dark matter-nucleon elastic scattering cross section between 10^{-31} and 10^{-28} cm^{2} for dark matter masses from 0.1 MeV/c^{2} to 0.1 GeV/c^{2}, with a large parameter space previously unexplored by experimental collaborations.

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在PandaX-II实验中寻找宇宙射线推动的亚gev暗物质。

我们报道了一项利用100 位于中国金平地下实验室的PandaX II探测器的吨·天完整数据集。利用从宇宙射线中获得的额外能量，亚GeV暗物质粒子可以在探测器中产生可见的反冲信号。利用速率和能谱的昼夜调制来进一步提高信号的灵敏度。我们的结果排除了在10^{-31}和10^{-28}之间的暗物质核子弹性散射截面暗物质质量为0.1的cm^｛2｝ MeV/c^｛2｝至0.1 GeV/c^{2}，具有以前实验合作未探索的大参数空间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks