Search of low-mass WIMPs with a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi></mml:mrow></mml:math>-type point contact germanium detector in the CDEX-1 experiment
Wen Zhao(Tsinghua University), Q. Yue(Tsinghua University), K. Kang(Tsinghua University), J. Cheng(Tsinghua University), Y. J. Li(Tsinghua University), H. T. Wong(Institute of Physics, Academia Sinica), S. T. Lin(Sichuan University), Jianping Chang(Nuctech (China)), C. H. Cheng(Institute of Physics, Academia Sinica), Q. H. Chen(Tsinghua University), Y. H. Chen(Yalong Hydro (China)), Z. Deng(Tsinghua University), Q. Du(Nankai University), Haipeng Gong(Tsinghua University), Xiaoyang Hao(Tsinghua University), H. J. He(Tsinghua University), Qingming He(Tsinghua University), Han‐Xiong Huang(China Institute of Atomic Energy), T. R. Huang(Institute of Physics, Academia Sinica), H. Jiang(Tsinghua University), H. B. Li(Institute of Physics, Academia Sinica), J. Li(Nuctech (China)), J. Li(Nuctech (China)), J. M. Li(Nuctech (China)), X. Li(Nankai University), X. Y. Li(Nankai University), Y. L. Li(Tsinghua University), F. K. Lin(Institute of Physics, Academia Sinica), S. K. Liu(Sichuan University), L. C. Lü(Tsinghua University), Hao Ma(Tsinghua University), J. L.(Tsinghua University), Shijie Mao(Nuctech (China)), Jiangyi Qin(Tsinghua University), Jing Ren(China Institute of Atomic Energy), Jing Ren(China Institute of Atomic Energy), Xichao Ruan(China Institute of Atomic Energy), V. Sharma(Institute of Physics, Academia Sinica), M. B. Shen(Yalong Hydro (China)), L. Singh(Institute of Physics, Academia Sinica), M. K. Singh(Institute of Physics, Academia Sinica), A. K. Soma(Institute of Physics, Academia Sinica), Jian Su(Tsinghua University), C. J. Tang(Sichuan University), J. M. Wang(Yalong Hydro (China)), L. Wang(Tsinghua University), Qing Wang(Tsinghua University), Yongcheng Wu(Yalong Hydro (China)), Y. C. Wu(Nuctech (China)), Zhong-Zhi Xianyu(Tsinghua University), Rui-Qing Xiao(Tsinghua University), Haoyang Xing(Sichuan University), F. Z. Xu(Tsinghua University), Y. Xu(Nankai University), Xun-Jie Xu(Tsinghua University), Tao Xue(Tsinghua University), L. T. Yang(Tsinghua University), S. W. Yang(Institute of Physics, Academia Sinica), Yi Nan(Tsinghua University), C. X. Yu(Nankai University), Hao Yu(Tsinghua University), Xun-Zhen Yu(Sichuan University), M. Zeng(Tsinghua University), X. H. Zeng(Yalong Hydro (China)), Zhi Zeng(Tsinghua University), L. Zhang(Nuctech (China)), Y. H. Zhang(Yalong Hydro (China)), M. G. Zhao(Nankai University), Z. Y. Zhou(China Institute of Atomic Energy), J. J. Zhu(Sichuan University), W. B. Zhu(Nuctech (China)), X. Z. Zhu(Tsinghua University), Zhonghua Zhu(Yalong Hydro (China))
Cited by 63Open Access
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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