학술논문
PandaX-II constraints on spin-dependent WIMP-nucleon effective interactions
Document Type
article
Author
Xia, J; Abdukerim, A; Chen, W; Chen, X; Chen, Y; Cui, X; Fang, D; Fu, C; Giboni, K; Giuliani, F; Gu, L; Guo, X; Guo, Z; Han, K; He, C; He, S; Huang, D; Huang, X; Huang, Z; Ji, P; Ji, X; Ju, Y; Li, S; Lin, H; Liu, H; Liu, J; Ma, Y; Mao, Y; Ni, K; Ning, J; Ren, X; Shi, F; Tan, A; Wang, A; Wang, C; Wang, H; Wang, M; Wang, Q; Wang, S; Wang, X; Wang, Z; Wu, M; Wu, S; Xiao, M; Xie, P; Yan, B; Yang, J; Yang, Y; Yu, C; Yuan, J; Yue, J; Zhang, D; Zhang, H; Zhang, T; Zhao, L; Zheng, Q; Zhou, J; Zhou, N; Zhou, X; Haxton, WC
Source
Subject
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Abstract
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.