Search of low-mass WIMPs with ap-type point contact germanium detector in the CDEX-1 experiment
Physical review. D/Physical review. D.2016Vol. 93(9)
Citations Over TimeTop 10% of 2016 papers
Wen Zhao, Qian Yue, K. Kang, J. Cheng, Y. J. Li, H. T. Wong, S. T. Lin, Jianping Chang, C. H. Cheng, Q. H. Chen, Y. H. Chen, Z. Deng, Q. Du, Haipeng Gong, Xiaoyang Hao, H. J. He, Qingming He, Han‐Xiong Huang, T. R. Huang, H. Jiang, H. B. Li, J. Li, J. Li, J. M. Li, X. Li, X. Y. Li, Y. L. Li, F. K. Lin, S. K. Liu, L. C. Lü, Hao Ma, J. L., Shijie Mao, Jiangyi Qin, Jing Ren, Jing Ren, Xichao Ruan, V. Sharma, M. B. Shen, L. Singh, M. K. Singh, A. K. Soma, Jian Su, C. J. Tang, J. M. Wang, L. Wang, Qing Wang, Yongcheng Wu, Y. C. Wu, Zhong-Zhi Xianyu, Rui-Qing Xiao, Haoyang Xing, F. Z. Xu, Y. Xu, Xun-Jie Xu, Tao Xue, L. T. Yang, S. W. Yang, Yi Nan, C. X. Yu, Hao Yu, Xun-Zhen Yu, Ming Zeng, X. H. Zeng, Zhi Zeng, L. Zhang, Y. H. Zhang, M. G. Zhao, Z. Y. Zhou, J. J. Zhu, W. B. Zhu, X. Z. Zhu, Zhonghua Zhu
Abstract
The CDEX-1 experiment conducted a search of low-mass ($<10\text{ }\text{ }\mathrm{GeV}/{c}^{2}$) weakly interacting massive particles dark matter at the China Jinping Underground Laboratory using a p-type point-contact germanium detector with a fiducial mass of 915 g at a physics analysis threshold of 475 eVee. We report the hardware setup, detector characterization, data acquisition, and analysis procedures of this experiment. No excess of unidentified events is observed after the subtraction of the known background. Using 335.6 kg-days of data, exclusion constraints on the weakly interacting massive particle-nucleon spin-independent and spin-dependent couplings are derived.
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