TY - JOUR
T1 - Dark Matter Results from 54-Ton-Day Exposure of PandaX-II Experiment
AU - (PandaX-II Collaboration)
AU - Cui, Xiangyi
AU - Abdukerim, Abdusalam
AU - Chen, Wei
AU - Chen, Xun
AU - Chen, Yunhua
AU - Dong, Binbin
AU - Fang, Deqing
AU - Fu, Changbo
AU - Giboni, Karl
AU - Giuliani, Franco
AU - Gu, Linhui
AU - Gu, Yikun
AU - Guo, Xuyuan
AU - Guo, Zhifan
AU - Han, Ke
AU - He, Changda
AU - Huang, Di
AU - He, Shengming
AU - Huang, Xingtao
AU - Huang, Zhou
AU - Ji, Xiangdong
AU - Ju, Yonglin
AU - Li, Shaoli
AU - Li, Yao
AU - Lin, Heng
AU - Liu, Huaxuan
AU - Liu, Jianglai
AU - Ma, Yugang
AU - Mao, Yajun
AU - Ni, Kaixiang
AU - Ning, Jinhua
AU - Ren, Xiangxiang
AU - Shi, Fang
AU - Tan, Andi
AU - Wang, Cheng
AU - Wang, Hongwei
AU - Wang, Meng
AU - Wang, Qiuhong
AU - Wang, Siguang
AU - Wang, Xiuli
AU - Wang, Xuming
AU - Wu, Qinyu
AU - Wu, Shiyong
AU - Xiao, Mengjiao
AU - Xie, Pengwei
AU - Yan, Binbin
AU - Yang, Yong
AU - Yue, Jianfeng
AU - Zhang, Dan
AU - Zhang, Hongguang
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/10/30
Y1 - 2017/10/30
N2 - We report a new search for weakly interacting massive particles (WIMPs) using the combined low background data sets acquired in 2016 and 2017 from the PandaX-II experiment in China. The latest data set contains a new exposure of 77.1 live days, with the background reduced to a level of 0.8×10-3 evt/kg/day, improved by a factor of 2.5 in comparison to the previous run in 2016. No excess events are found above the expected background. With a total exposure of 5.4×104 kg day, the most stringent upper limit on the spin-independent WIMP-nucleon cross section is set for a WIMP with mass larger than 100 GeV/c2, with the lowest 90% C.L. exclusion at 8.6×10-47 cm2 at 40 GeV/c2.
AB - We report a new search for weakly interacting massive particles (WIMPs) using the combined low background data sets acquired in 2016 and 2017 from the PandaX-II experiment in China. The latest data set contains a new exposure of 77.1 live days, with the background reduced to a level of 0.8×10-3 evt/kg/day, improved by a factor of 2.5 in comparison to the previous run in 2016. No excess events are found above the expected background. With a total exposure of 5.4×104 kg day, the most stringent upper limit on the spin-independent WIMP-nucleon cross section is set for a WIMP with mass larger than 100 GeV/c2, with the lowest 90% C.L. exclusion at 8.6×10-47 cm2 at 40 GeV/c2.
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U2 - 10.1103/PhysRevLett.119.181302
DO - 10.1103/PhysRevLett.119.181302
M3 - Article
C2 - 29219592
AN - SCOPUS:85032737302
SN - 0031-9007
VL - 119
JO - Physical review letters
JF - Physical review letters
IS - 18
M1 - 181302
ER -