Details

Autor(en) / Beteiligte

• Fu, Changbo
• Cui, Xiangyi
• Zhou, Xiaopeng
• Chen, Xun
• Chen, Yunhua
• Fang, Deqing
• Giboni, Karl
• Giuliani, Franco
• Han, Ke
• Huang, Xingtao
• Ji, Xiangdong
• Ju, Yonglin
• Lei, Siao
• 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

Titel

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

Ist Teil von

• Physical review letters, 2017-02, Vol.118 (7), p.071301-071301, Article 071301

Ort / Verlag

United States

Erscheinungsjahr

2017

Link zum Volltext

Quelle

American Physical Society [PROLA]

Beschreibungen/Notizen

• New constraints are presented on the spin-dependent weakly-interacting-massive-particle–- (WIMP-)nucleon interaction from the PandaX-II experiment, using a data set corresponding to a total exposure of 3.3×10^{4}  kg day. 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 4.1×10^{-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 2 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.