1. Limits on light WIMPs with a 1 kg-scale germanium detector at 160 eVee physics threshold at the China Jinping Underground Laboratory
- Author
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X. H. Zeng, Lakhwinder Singh, Hao Jiang, Hao-Yang Xing, Li Wang, Jing-Han Chen, Ming-Gang Zhao, Kejun Kang, Qiang Du, J. F. Yue, Shiyong Wu, Jianping Cheng, B. Sevda, Chang-Jian Tang, L. He, J. P. Chang, Tao Xue, Zhi Zeng, Hong Li, Qing Wang, Yucheng Wu, Yulan Li, Xichao Ruan, M. Aǧartioǧlu, Vivek Sharma, Hao Ma, Qian Yue, ZhongZhi Liu, J. F. Zhou, Hai-Peng An, N. Yi, Q. D. Hu, Ji-Min Wang, Henry T. Wong, L. T. Yang, W. Y. Tang, Jin Li, Yunhua Chen, Chunxu Yu, F. K. Lin, S. K. Liu, Ming Zeng, Song-Wei Yang, J. L. Ma, H. Pan, Jingjun Zhu, Hanxiong Huang, Zhi Deng, Xia Li, Yun-Hua Zhang, Shin-Ted Lin, Yuanjing Li, Wei Zhao, Man-Bin Shen, Zhong-Hua Zhu, Yang Tian, L. P. Jia, Yi Wang, J. W. Hu, Z. Y. Zhou, H. J. Yu, Xue-Qian Li, Jianmin Li, Yin Xu, Manoj Kumar Singh, Hau-Bin Li, Jie Ren, and Hui Gong
- Subjects
Physics ,Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,Physics::Instrumentation and Detectors ,010308 nuclear & particles physics ,Dark matter ,Astrophysics::Instrumentation and Methods for Astrophysics ,Massive particle ,China Jinping Underground Laboratory ,FOS: Physical sciences ,Astronomy and Astrophysics ,Scale (descriptive set theory) ,Instrumentation and Detectors (physics.ins-det) ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,High Energy Physics - Experiment ,Semiconductor detector ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,WIMP ,0103 physical sciences ,High Energy Physics::Experiment ,010306 general physics ,Instrumentation - Abstract
We report results of a search for light weakly interacting massive particle (WIMP) dark matter from the CDEX-1 experiment at the China Jinping Underground Laboratory (CJPL). Constraints on WIMP-nucleon spin-independent (SI) and spin-dependent (SD) couplings are derived with a physics threshold of 160 eVee, from an exposure of 737.1 kg-days. The SI and SD limits extend the lower reach of light WIMPs to 2 GeV and improve over our earlier bounds at WIMP mass less than 6 GeV., Comment: 10 pages, 10 figures
- Published
- 2018
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