Dark Matter Results from First 98.7 Days of Data from the PandaX-II Experiment

Andi Tan(University of Maryland, College Park), Mengjiao Xiao(Shanghai Jiao Tong University), Xiangyi Cui(Shanghai Jiao Tong University), Xun Chen(Shanghai Jiao Tong University), Yunhua Chen(Yalong Hydro (China)), Deqing Fang(Chinese Academy of Sciences), Changbo Fu(Shanghai Jiao Tong University), Karl Giboni(Shanghai Jiao Tong University), Franco Giuliani(Shanghai Jiao Tong University), Haowei Gong(Shanghai Jiao Tong University), Xuyuan Guo(Yalong Hydro (China)), K. Han(Shanghai Jiao Tong University), Shouyang Hu(China Institute of Atomic Energy), Xingtao Huang(Shandong University), Xiangdong Ji(Shanghai Jiao Tong University), Yonglin Ju(Shanghai Jiao Tong University), Siao Lei(Shanghai Jiao Tong University), Shaoli Li(Shanghai Jiao Tong University), Xiaomei Li(China Institute of Atomic Energy), Xinglong Li(China Institute of Atomic Energy), Hao Liang(China Institute of Atomic Energy), Q. Lin(Shanghai Jiao Tong University), Huaxuan Liu(Shanghai Jiao Tong University), Jianglai Liu(Shanghai Jiao Tong University), W. Lorenzon(University of Michigan), Y. G.(Chinese Academy of Sciences), Yajun Mao(Peking University), K. Ni(Shanghai Jiao Tong University), Xiangxiang Ren(Shanghai Jiao Tong University), Michael Schubnell(University of Michigan), Manbin Shen(Yalong Hydro (China)), Fang Shi(Shanghai Jiao Tong University), Hongwei Wang(Chinese Academy of Sciences), Jimin Wang(Yalong Hydro (China)), Meng Wang(Shandong University), Qiuhong Wang(Chinese Academy of Sciences), Siguang Wang(Peking University), Xuming Wang(Shanghai Jiao Tong University), Zhou Wang(Shanghai Jiao Tong University), Shiyong Wu(Yalong Hydro (China)), Xiang Xiao(Shanghai Jiao Tong University), Pengwei Xie(Shanghai Jiao Tong University), Binbin Yan(Shandong University), Yong Yang(Shanghai Jiao Tong University), Jianfeng Yue(Yalong Hydro (China)), X. H. Zeng(Yalong Hydro (China)), Hongguang Zhang(Shanghai Jiao Tong University), Hua Zhang(Shanghai Jiao Tong University), Huan‐Qiao Zhang(Shanghai Jiao Tong University), Tao Zhang(Shanghai Jiao Tong University), Li Zhao(Shanghai Jiao Tong University), Jing Zhou(China Institute of Atomic Energy), Ning Zhou(Shanghai Jiao Tong University), Xiaopeng Zhou(Peking University)
Physical Review Letters
September 16, 2016
10.1103/physrevlett.117.121303
Cited by 600Open Access
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Abstract

We report the weakly interacting massive particle (WIMP) dark matter search results using the first physics-run data of the PandaX-II 500 kg liquid xenon dual-phase time-projection chamber, operating at the China JinPing underground laboratory. No dark matter candidate is identified above background. In combination with the data set during the commissioning run, with a total exposure of 3.3×10^{4} kg day, the most stringent limit to the spin-independent interaction between the ordinary and WIMP dark matter is set for a range of dark matter mass between 5 and 1000 GeV/c^{2}. The best upper limit on the scattering cross section is found 2.5×10^{-46} cm^{2} for the WIMP mass 40 GeV/c^{2} at 90% confidence level.

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