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

  title={Search for Cosmic-Ray Boosted Sub-GeV Dark Matter at the PandaX-II Experiment.},
  author={Xiaohui Cui and Abdusalam Abdukerim and Zihao Bo and Wei Chen and Xun Chen and Yunhua Chen and Chen Cheng and Yun-Zhong Cheng and Yingjie Fan and De-Qing Fang and Changbo Fu and Mengting Fu and Li-Hui Geng and Karl Ludwig Giboni and Linhui Gu and Xuyuan Guo and Kyong Chol Han and Changda He and Jinrong He and Di Huang and Yanlin Huang and Zhou Huang and Ruquan Hou and Xiangdong Ji and Yonglin Ju and Chenxiang Li and Mingchuan Li and Shu Li and Shuaijie Li and Qingjie Lin and Jianglai Liu and Xiaoying Lu and Ling-Zhi Luo and Wenbo Ma and Yu Jie Ma and Yajun Mao and Yue Meng and Nasir Shaheed and Xu Ning and Ningchun Qi and Zhicheng Qian and Xiangxiang Ren and Changsong Shang and Guofang Shen and Lin Si and Wen-wei Sun and Andi Tan and Yinyong Tao and Anqing Wang and Meng Wang and Qiuhong Wang and Shaobo Wang and Siguang Wang and Zhou Wang and Wei Wang and Xiuli Wang and Mengmeng Wu and Weihao Wu and Jing-Kai Xia and Mengjiao Xiao and Xi Xiao and Pengwei Xie and Binbin Yan and Xiyu Yan and Jijun Yang and Yong Yang and Chun-xu Yu and Jumin Yuan and Ying Yuan and Dan Zhang and Minzhen Zhang and Peng Zhang and Tao Zhang and Li Zhao and Qibin Zheng and Jifang Zhou and Ning Zhou and Xiaopeng Zhou and Yong Zhou},
  journal={Physical review letters},
  volume={128 17},
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… 

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