Limits on light WIMPs with a 1 kg-scale germanium detector at 160 eVee physics threshold at the China Jinping Underground Laboratory

Authors :: Yang, L. T.
Li, H. B.
Yue, Q.
Kang, K. J.
Cheng, J. P.
Li, Y. J.
Wong, H. T.
Aǧartioǧlu, M.
An, H. P.
Chang, J. P.
Chen, J. H.
Chen, Y. H.
Deng, Z.
Du, Q.
Gong, H.
He, L.
Hu, J. W.
Hu, Q. D.
Huang, H. X.
Jia, L. P.
Jiang, H.
Li, H.
Li, J. M.
Li, J.
Li, X.
Li, X. Q.
Li, Y. L.
Lin, F. K.
Lin, S. T.
Liu, S. K.
Liu, Z. Z.
Ma, H.
Ma, J. L.
Pan, H.
Ren, J.
Ruan, X. C.
Sevda, B.
Sharma, V.
Shen, M. B.
Singh, L.
Singh, M. K.
Tang, C. J.
Tang, W. Y.
Tian, Y.
Wang, J. M.
Wang, L.
Wang, Q.
Wang, Y.
Wu, S. Y.
Wu, Y. C.
Xing, H. Y.
Xu, Y.
Xue, T.
Yang, S. W.
Yi, N.
Yu, C. X.
Yu, H. J.
Yue, J. F.
Zeng, X. H.
Zeng, M.
Zeng, Z.
Zhang, Y. H.
Zhao, M. G.
Zhao, W.
Zhou, J. F.
Zhou, Z. Y.
Zhu, J. J.
Zhu, Z. H.
Source :: Chin. Phys. C 42, 23002 (2018)
Publication Year :: 2017
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.<br />Comment: 10 pages, 10 figures

Subjects :: High Energy Physics - Experiment
Physics - Instrumentation and Detectors

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