Journal
PHYSICAL REVIEW LETTERS
Volume 128, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.171801
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Funding
- Office of Science and Technology, Shanghai Municipal Government [18JC1410200]
- Ministry of Science and Technology of China [2016YFA0400301]
- National Science Foundation of China [12005131, 11905128, 12090061, 12090064, 11775141]
- Shanghai Pujiang Program [20PJ1407800]
- Key Research Program of the Chinese Academy of Sciences [XDPB15]
- Program for Innovative Talents and Entrepreneur in Jiangsu
- Double First Class Plan of the Shanghai Jiao Tong University
- Chinese Academy of Sciences Center for Excellence in Particle Physics (CCEPP)
- Hongwen Foundation in Hong Kong
- Tencent Foundation in China
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This study presents a novel search for cosmic-ray boosted dark matter using the PandaX-II detector, where the diurnal modulations in rate and energy spectrum are utilized to enhance signal sensitivity. The results exclude a large parameter space previously unexplored by experimental collaborations.
We report a novel search for the cosmic-ray boosted dark matter using the 100 tonne day full dataset of the PandaX-II detector located at the China Jinping Underground Laboratory. With the extra energy gained from the cosmic rays, sub-GeV dark matter particles can produce visible recoil signals in the detector. The diurnal modulations in rate and energy spectrum are utilized to further enhance the signal sensitivity. Our result excludes the dark matter-nucleon elastic scattering cross section between 10(-31) and 10(-28) cm(2 )for dark matter masses from 0.1 MeV/c(2) to 0.1 GeV/c(2), with a large parameter space previously unexplored by experimental collaborations.
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