标题:Dark Matter Results from 54-Ton-Day Exposure of PandaX-II Experiment
作者:Cui, Xiangyi; Abdukerim, Abdusalam; Chen, Wei; Chen, Xun; Chen, Yunhua; Dong, Binbin; Fang, Deqing; Fu, Changbo; Giboni, Karl; Giuli 更多
作者机构:[Cui, Xiangyi; Chen, Wei; Chen, Xun; Dong, Binbin; Fu, Changbo; Giboni, Karl; Giuliani, Franco; Gu, Linhui; Gu, Yikun; Han, Ke; He, Changda; Huang, Di 更多
通讯作者:Liu, Jianglai
通讯作者地址:[Liu, JL; Wang, QH]Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China;[Liu, JL]Tsung Dao Lee Inst, Shanghai 200240, Peoples R 更多
来源:PHYSICAL REVIEW LETTERS
出版年:2017
卷:119
期:18
DOI:10.1103/PhysRevLett.119.181302
摘要: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 x 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 x 10(4) 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/c(2), with the lowest 90% C.L. exclusion at 8.6 x 10(-47) cm(2) at 40 GeV/c(2).
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:94
Scopus被引频次:85
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032737302&doi=10.1103%2fPhysRevLett.119.181302&partnerID=40&md5=d9c682d72d92a415eff56b69843ae5d4
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