Limits on light weakly interacting massive particles from the CDEX-1 experiment with ap-type point-contact germanium detector at the China Jinping Underground Laboratory
Limits on light weakly interacting massive particles from the CDEX-1 experiment with ap-type point-contact germanium detector at the China Jinping Underground Laboratory
复制标题
DOI：
10.1103/physrevd.90.091701
复制
发表时间：
2014-04
影响因子：
5
通讯作者：
Q. Yue;W. Zhao;K. Kang;J. P. Cheng-J. P.-Cheng-2230227105;Y. J. Li-Y. J.-Li-2128130461;S. T. Lin-S. T.-Lin-1390618221;J. P. Chang-J. P.-Chang-2218848423;N. Chen;Q. H. Chen-Q. H.-Chen-2230171527;Y. H. Chen-Y. H.-Chen-2124915851;Y. Chuang;Z. Deng;Q. Du;H. Gong;X. Hao;H. He;Q. He;H. X. Huang-H. X.-Huang-2156614503;T. R. Huang-T. R.-Huang-2230270051;H. Jiang;H. B. Li-H. B.-Li-2108513506;J. M. Li-J. M.-Li-2130142726;J. Li;X. Li;X. Y. Li-X. Y.-Li-2130344633;Y. L. Li-Y. L.-Li-2128130463;H. Liao;F. Lin;S. K. Liu-S. K.-Liu-2127738647;L. Lü;H. Ma;S. Mao;J. Qin;J. Ren;X. Ruan;M. Shen;L. Singh;M. K. Singh-M. K.-Singh-2157759731;A. Soma;J. Su;C. Tang;C. Tseng;J. M. Wang-J. M.-Wang-2195033588;L. Wang;Q. Wang;H. Wong;S. Y. Wu-S. Y.-Wu-2157821190;Y. C. Wu-Y. C.-Wu-2160041810;Z. Xianyu;R. Xiao;H. Xing;F. Xu;Y. Xu;X. J. Xu-X. J.-Xu-2230369616;T. Xue;L. T. Yang-L. T.-Yang-2127879750;S. W. Yang-S. W.-Yang-2230363281;N. Yi;C. X. Yu-C. X.-Yu-2218980942;H. Yu;X. Z. Yu-X. Z.-Yu-2229005569;X. Zeng;Z. Zeng;L. Zhang;Y. H. Zhang-Y. H.-Zhang-2124817770;M. G. Zhao-M. G.-Zhao-2218854622;Z. Y. Zhou-Z. Y.-Zhou-2230154654;J. J. Zhu-J. ;W. B. Zhu-W. B.-Zhu-2228887337;X. Z. Zhu-X. Z.-Zhu-2229437038;Z. H. Zhu-Z. H.-Zhu-2214388394
中科院分区：
文献类型：
--
作者：
Q. Yue;W. Zhao;K. Kang;J. P. Cheng-J. P.-Cheng-2230227105;Y. J. Li-Y. J.-Li-2128130461;S. T. Lin-S. T.-Lin-1390618221;J. P. Chang-J. P.-Chang-2218848423;N. Chen;Q. H. Chen-Q. H.-Chen-2230171527;Y. H. Chen-Y. H.-Chen-2124915851;Y. Chuang;Z. Deng;Q. Du;H. Gong;X. Hao;H. He;Q. He;H. X. Huang-H. X.-Huang-2156614503;T. R. Huang-T. R.-Huang-2230270051;H. Jiang;H. B. Li-H. B.-Li-2108513506;J. M. Li-J. M.-Li-2130142726;J. Li;X. Li;X. Y. Li-X. Y.-Li-2130344633;Y. L. Li-Y. L.-Li-2128130463;H. Liao;F. Lin;S. K. Liu-S. K.-Liu-2127738647;L. Lü;H. Ma;S. Mao;J. Qin;J. Ren;X. Ruan;M. Shen;L. Singh;M. K. Singh-M. K.-Singh-2157759731;A. Soma;J. Su;C. Tang;C. Tseng;J. M. Wang-J. M.-Wang-2195033588;L. Wang;Q. Wang;H. Wong;S. Y. Wu-S. Y.-Wu-2157821190;Y. C. Wu-Y. C.-Wu-2160041810;Z. Xianyu;R. Xiao;H. Xing;F. Xu;Y. Xu;X. J. Xu-X. J.-Xu-2230369616;T. Xue;L. T. Yang-L. T.-Yang-2127879750;S. W. Yang-S. W.-Yang-2230363281;N. Yi;C. X. Yu-C. X.-Yu-2218980942;H. Yu;X. Z. Yu-X. Z.-Yu-2229005569;X. Zeng;Z. Zeng;L. Zhang;Y. H. Zhang-Y. H.-Zhang-2124817770;M. G. Zhao-M. G.-Zhao-2218854622;Z. Y. Zhou-Z. Y.-Zhou-2230154654;J. J. Zhu-J. ;W. B. Zhu-W. B.-Zhu-2228887337;X. Z. Zhu-X. Z.-Zhu-2229437038;Z. H. Zhu-Z. H.-Zhu-2214388394
我们报告了在中国锦屏地下实验室通过 CDEX-1 实验寻找轻暗物质 WIMP 的结果，该结果基于来自 p 型点接触锗探测器的 53.9 kg-day 数据，该探测器被 NaI(Tl) 晶体闪烁体封闭作为反康普顿探测器。高于 475 eVee 分析阈值的事件率和频谱与所理解的背景模型一致。探测并排除 WIMP 质量为 6-20 GeV 时 WIMP 核相干弹性散射的部分允许区域。独立于相互作用通道，该结果与 CoGeNT 实验的异常过量是由暗物质引起的解释相矛盾，因为两个实验中使用了相同的探测器技术。
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. Independent of interaction channels, this result contradicts the interpretation that the anomalous excesses of the CoGeNT experiment are induced by Dark Matter, since identical detector techniques are used in both experiments.