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Zhang, M.B. Shen, M.G. Zhao, M.K. Singh, N. Chen, N. Yi, Q. Du, Q.H. Chen, Q.J. He, Q. Wang, Q. Yue, R.Q. Xiao, S.J. Mao, S.K. Liu, S.T. Lin, S.W. Yang, S.Y. Wu, T.R. Huang, T. Xue, W.B. Zhu, W. Zhao, X.C. Ruan, X.H. Zeng, X.J. Xu, X. Li, X.Q. Hao, X.Y. Li, X.Z. Yu, X.Z. Zhu, Y.C. Chuang, Y.C. Wu, Y.H. Chen, Y.H. Zhang, Y.J. Li, Y.L. Li, Y. Xu, Z. Deng, Z.H. Zhu, Z.Y. Zhou, Z. Zeng, Z.Z. Xianyu","submitted_at":"2014-04-19T12:16:45Z","abstract_excerpt":"We report results of a search for light Dark Matter WIMPs with CDEX-1 experiment at the China Jinping Underground Laboratory, based on 53.9 kg-days of data from a p-type point-contact germanium detector enclosed by a NaI(Tl) crystal scintillator as anti-Compton detector. The event rate and spectrum above the analysis threshold of 475 eVee are consistent with the understood background model. Part of the allowed regions for WIMP-nucleus coherent elastic scattering at WIMP mass of 6-20 GeV are probed and excluded. 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