Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg×day Data of the CDEX-10 Experiment

Jiang, H. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Jia, L. P. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Yue, Q. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Kang, K. J. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Cheng, J. P. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) (College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875) ; Li, Y. J. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Wong, H. T. (Institute of Physics, Academia Sinica, Taipei 11529) ; Agartioglu, M. (Institute of Physics, Academia Sinica, Taipei 11529) (Department of Physics, Dokuz Eylül University, Ízmir 35160) ; An, H. P. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) (Department of Physics, Tsinghua University, Beijing 100084) ; Chang, J. P. (NUCTECH Company, Beijing 100084) ; Chen, J. H. (Institute of Physics, Academia Sinica, Taipei 11529) ; Chen, Y. H. (YaLong River Hydropower Development Company, Chengdu 610051) ; Deng, Z. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Du, Q. (College of Physical Science and Technology, Sichuan University, Chengdu 610064) ; Gong, H. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; He, L. (NUCTECH Company, Beijing 100084) ; Hu, J. W. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Hu, Q. D. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Huang, H. X. (Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413) ; Li, H. B. (Institute of Physics, Academia Sinica, Taipei 11529) ; Li, H. (NUCTECH Company, Beijing 100084) ; Li, J. M. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Li, J. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Li, X. (Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413) ; Li, X. Q. (School of Physics, Nankai University, Tianjin 300071) ; Li, Y. L. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Liao, B. (College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875) ; Lin, F. K. (Institute of Physics, Academia Sinica, Taipei 11529) ; Lin, S. T. (College of Physical Science and Technology, Sichuan University, Chengdu 610064) ; Liu, S. K. (College of Physical Science and Technology, Sichuan University, Chengdu 610064) ; Liu, Y. D. (College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875) ; Liu, Y. Y. (College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875) ; Liu, Z. Z. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Ma, H. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Ma, J. L. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) (Department of Physics, Tsinghua University, Beijing 100084) ; Pan, H. (NUCTECH Company, Beijing 100084) ; Ren, J. (Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413) ; Ruan, X. C. (Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413) ; Sevda, B. (Institute of Physics, Academia Sinica, Taipei 11529) (Department of Physics, Dokuz Eylül University, Ízmir 35160) ; Sharma, V. (Institute of Physics, Academia Sinica, Taipei 11529) (Department of Physics, Banaras Hindu University, Varanasi 221005) ; Shen, M. B. (YaLong River Hydropower Development Company, Chengdu 610051) ; Singh, L. (Institute of Physics, Academia Sinica, Taipei 11529) (Department of Physics, Banaras Hindu University, Varanasi 221005) ; Singh, M. K. (Institute of Physics, Academia Sinica, Taipei 11529) (Department of Physics, Banaras Hindu University, Varanasi 221005) ; Sun, T. X. (College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875) ; Tang, C. J. (College of Physical Science and Technology, Sichuan University, Chengdu 610064) ; Tang, W. Y. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Tian, Y. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Wang, G. F. (College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875) ; Wang, J. M. (YaLong River Hydropower Development Company, Chengdu 610051) ; Wang, L. (Department of Physics, Beijing Normal University, Beijing 100875) ; Wang, Q. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) (Department of Physics, Tsinghua University, Beijing 100084) ; Wang, Y. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) (Department of Physics, Tsinghua University, Beijing 100084) ; Wu, S. Y. (YaLong River Hydropower Development Company, Chengdu 610051) ; Wu, Y. C. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Xing, H. Y. (College of Physical Science and Technology, Sichuan University, Chengdu 610064) ; Xu, Y. (School of Physics, Nankai University, Tianjin 300071) ; Xue, T. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Yang, L. T. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) (Department of Physics, Tsinghua University, Beijing 100084) ; Yang, S. W. (Institute of Physics, Academia Sinica, Taipei 11529) ; Yi, N. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Yu, C. X. (School of Physics, Nankai University, Tianjin 300071) ; Yu, H. J. (NUCTECH Company, Beijing 100084) ; Yue, J. F. (YaLong River Hydropower Development Company, Chengdu 610051) ; Zeng, X. H. (YaLong River Hydropower Development Company, Chengdu 610051) ; Zeng, M. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Zeng, Z. (Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084) ; Zhang, F. S. (College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875) ; Zhang, Y. H. (YaLong River Hydropower Development Company, Chengdu 610051) ; Zhao, M. G. (School of Physics, Nankai University, Tianjin 300071) ; Zhou, J. F. (YaLong River Hydropower Development Company, Chengdu 610051) ; Zhou, Z. Y. (Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413) ; Zhu, J. J. (College of Physical Science and Technology, Sichuan University, Chengdu 610064) ; Zhu, Z. H. (YaLong River Hydropower Development Company, Chengdu 610051)

13 June 2018

Abstract: We report the first results of a light weakly interacting massive particles (WIMPs) search from the CDEX-10 experiment with a 10 kg germanium detector array immersed in liquid nitrogen at the China Jinping Underground Laboratory with a physics data size of 102.8 kg day. At an analysis threshold of 160 eVee, improved limits of 8×1042 and 3×1036 cm2 at a 90% confidence level on spin-independent and spin-dependent WIMP-nucleon cross sections, respectively, at a WIMP mass (mχ) of 5 GeV/c2 are achieved. The lower reach of mχ is extended to 2 GeV/c2.


Published in: Physical Review Letters 120 (2018)
Published by: APS
DOI: 10.1103/PhysRevLett.120.241301
arXiv: 1802.09016
License: CC-BY-4.0



Back to search

Fulltext:
Download fulltextPDF Download fulltextXML