Spin-Dependent Weakly-Interacting-Massive-Particle--Nucleon Cross Section Limits from First Data of PandaX-II Experiment

New constraints are presented on the spin-dependent WIMP-nucleon interaction from the PandaX-II experiment, using a data set corresponding to a total exposure of 3.3\(\times10^4\) kg-days. Assuming a standard axial-vector spin-dependent WIMP interaction with \(^{129}\)Xe and \(^{131}\)Xe nuclei, the...

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Published inarXiv.org
Main Authors Fu, Changbo, Cui, Xiangyi, Zhou, Xiaopeng, Chen, Xun, Chen, Yunhua, Fang, Deqing, Giboni, Karl, Giuliani, Franco, Han, Ke, Huang, Xingtao, Ji, Xiangdong, Ju, Yonglin, Siao Lei, Li, Shaoli, Liu, Huaxuan, Liu, Jianglai, Ma, Yugang, Mao, Yajun, Ren, Xiangxiang, Tan, Andi, Wang, Hongwei, Wang, Jiming, Wang, Meng, Wang, Qiuhong, Wang, Siguang, Wang, Xuming, Wang, Zhou, Wu, Shiyong, Xiao, Mengjiao, Xie, Pengwei, Yan, Binbin, Yang, Yong, Yue, Jianfeng, Zhang, Hongguang, Zhang, Tao, Zhao, Li, Zhou, Ning
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 15.02.2017
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Summary:New constraints are presented on the spin-dependent WIMP-nucleon interaction from the PandaX-II experiment, using a data set corresponding to a total exposure of 3.3\(\times10^4\) kg-days. Assuming a standard axial-vector spin-dependent WIMP interaction with \(^{129}\)Xe and \(^{131}\)Xe nuclei, the most stringent upper limits on WIMP-neutron cross sections for WIMPs with masses above 10 GeV/c\(^{2}\) are set in all dark matter direct detection experiments. The minimum upper limit of \(4.1\times 10^{-41}\) cm\(^2\) at 90\% confidence level is obtained for a WIMP mass of 40 GeV/c\(^{2}\). This represents more than a factor of two improvement on the best available limits at this and higher masses. These improved cross-section limits provide more stringent constraints on the effective WIMP-proton and WIMP-neutron couplings.
ISSN:2331-8422
DOI:10.48550/arxiv.1611.06553