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arXiv · 1602.06563

Dark Matter Search Results from the Commissioning Run of PandaX-II

PandaX Collaboration·Andi Tan·Xiang Xiao·Xiangyi Cui·Xun Chen·Yunhua Chen·Deqing Fang·Changbo Fu·Karl Giboni·Franco Giuliani·Haowei Gong·Shouyang Hu·Xingtao Huang·Xiangdong Ji·Yonglin Ju·Siao Lei·Shaoli Li·Xiaomei Li·Xinglong Li·Hao Liang·Qing Lin·Huaxuan Liu·Jianglai Liu·Wolfgang Lorenzon·Yugang Ma·Yajun Mao·Kaixuan Ni·Kirill Pushkin·Xiangxiang Ren·Michael Schubnell·Manbin Shen·Fang Shi·Scott Stephenson·Hongwei Wang·Jiming Wang·Meng Wang·Qiuhong Wang·Siguang Wang·Xuming Wang·Zhou Wang·Shiyong Wu·Mengjiao Xiao·Pengwei Xie·Binbin Yan·Yong Yang·Jianfeng Yue·Xionghui Zeng·Hongguang Zhang·Hua Zhang·Huanqiao Zhang·Tao Zhang·Li Zhao·Jing Zhou·Xiaopeng Zhou
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Abstract

We present the results of a search for WIMPs from the commissioning run of the PandaX-II experiment located at the China Jinping underground Laboratory. A WIMP search data set with an exposure of 306$\times$19.1 kg-day was taken, while its dominant $^{85}$Kr background was used as the electron recoil calibration. No WIMP candidates are identified, and a 90\% upper limit is set on the spin-independent elastic WIMP-nucleon cross section with a lowest excluded cross section of 2.97$\times$10$^{-45}$~cm$^2$ at a WIMP mass of 44.7~GeV/c$^2$.

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PandaX Collaboration, Andi Tan, Xiang Xiao, Xiangyi Cui, Xun Chen, Yunhua Chen, Deqing Fang, Changbo Fu, Karl Giboni, Franco Giuliani, Haowei Gong, Shouyang Hu, Xingtao Huang, Xiangdong Ji, Yonglin Ju, Siao Lei, Shaoli Li, Xiaomei Li, Xinglong Li, Hao Liang, Qing Lin, Huaxuan Liu, Jianglai Liu, Wolfgang Lorenzon, Yugang Ma, Yajun Mao, Kaixuan Ni, Kirill Pushkin, Xiangxiang Ren, Michael Schubnell, Manbin Shen, Fang Shi, Scott Stephenson, Hongwei Wang, Jiming Wang, Meng Wang, Qiuhong Wang, Siguang Wang, Xuming Wang, Zhou Wang, Shiyong Wu, Mengjiao Xiao, Pengwei Xie, Binbin Yan, Yong Yang, Jianfeng Yue, Xionghui Zeng, Hongguang Zhang, Hua Zhang, Huanqiao Zhang, Tao Zhang, Li Zhao, Jing Zhou, Xiaopeng Zhou. 2016-02-21. Dark Matter Search Results from the Commissioning Run of PandaX-II. https://doi.org/10.1103/physrevd.93.122009

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