- Main
PandaX-II constraints on spin-dependent WIMP-nucleon effective interactions
- Xia, Jingkai;
- Abdukerim, Abdusalam;
- Chen, Wei;
- Chen, Xun;
- Chen, Yunhua;
- Cui, Xiangyi;
- Fang, Deqing;
- Fu, Changbo;
- Giboni, Karl;
- Giuliani, Franco;
- Gu, Linhui;
- Guo, Xuyuan;
- Guo, Zhifan;
- Han, Ke;
- He, Changda;
- He, Shengming;
- Huang, Di;
- Huang, Xingtao;
- Huang, Zhou;
- Ji, Peng;
- Ji, Xiangdong;
- Ju, Yonglin;
- Li, Shaoli;
- Lin, Heng;
- Liu, Huaxuan;
- Liu, Jianglai;
- Ma, Yugang;
- Mao, Yajun;
- Ni, Kaixiang;
- Ning, Jinhua;
- Ren, Xiangxiang;
- Shi, Fang;
- Tan, Andi;
- Wang, Anqing;
- Wang, Cheng;
- Wang, Hongwei;
- Wang, Meng;
- Wang, Qiuhong;
- Wang, Siguang;
- Wang, Xiuli;
- Wang, Xuming;
- Wang, Zhou;
- Wu, Mengmeng;
- Wu, Shiyong;
- Xiao, Mengjiao;
- Xie, Pengwei;
- Yan, Binbin;
- Yang, Jijun;
- Yang, Yong;
- Yu, Chunxu;
- Yuan, Jumin;
- Yue, Jianfeng;
- Zhang, Dan;
- Zhang, Hongguang;
- Zhang, Tao;
- Zhao, Li;
- Zheng, Qibin;
- Zhou, Jifang;
- Zhou, Ning;
- Zhou, Xiaopeng;
- Haxton, Wick C
- et al.
Published Web Location
https://doi.org/10.1016/j.physletb.2019.02.043Abstract
We present PandaX-II constraints on candidate WIMP-nucleon effective interactions involving the nucleon or WIMP spin, including, in addition to standard axial spin-dependent (SD) scattering, various couplings among vector and axial currents, magnetic and electric dipole moments, and tensor interactions. The data set corresponding to a total exposure of 54-ton-days is reanalyzed to determine constraints as a function of the WIMP mass and isospin coupling. We obtain WIMP-nucleon cross section bounds of 1.6×10 −41 cm 2 and 9.0×10 −42 cm 2 (90% c.l.) for neutron-only SD and tensor coupling, respectively, for a mass M WIMP ∼40GeV/c 2 . The SD limits are the best currently available for M WIMP >40GeV/c 2 . We show that PandaX-II has reached a sensitivity sufficient to probe a variety of other candidate spin-dependent interactions at the weak scale.
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