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Limits on Axion Couplings from the First 80 Days of Data of the PandaX-II Experiment

  • (PandaX-II Collaboration)
  • Shanghai Jiao Tong University
  • Peking University
  • Yalong River Hydropower Development Company, Ltd.
  • Chinese Academy of Sciences
  • Shandong University
  • University of Maryland, College Park

科研成果: 期刊稿件文章同行评审

摘要

We report new searches for solar axions and galactic axionlike dark matter particles, using the first low-background data from the PandaX-II experiment at China Jinping Underground Laboratory, corresponding to a total exposure of about 2.7×104 kg day. No solar axion or galactic axionlike dark matter particle candidate has been identified. The upper limit on the axion-electron coupling (gAe) from the solar flux is found to be about 4.35×10-12 in the mass range from 10-5 to 1 keV/c2 with 90% confidence level, similar to the recent LUX result. We also report a new best limit from the Fe57 deexcitation. On the other hand, the upper limit from the galactic axions is on the order of 10-13 in the mass range from 1 to 10 keV/c2 with 90% confidence level, slightly improved compared with the LUX.

源语言英语
文章编号181806
期刊Physical Review Letters
119
18
DOI
出版状态已出版 - 1 11月 2017
已对外发布

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