Exotic Dark Matter Search with the CDEX-10 Experiment at China’s Jinping Underground Laboratory,Physical Review Letters

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Exotic Dark Matter Search with the CDEX-10 Experiment at China’s Jinping Underground Laboratory
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-11-23 , DOI: 10.1103/physrevlett.129.221802
W H Dai ₁ , L P Jia ₁ , H Ma ₁ , Q Yue ₁ , K J Kang ₁ , Y J Li ₁ , H P An ₂ , Greeshma C ₃ , J P Chang ₄ , Y H Chen ₅ , J P Cheng _{1,

6} , Z Deng ₁ , C H Fang ₇ , X P Geng ₁ , H Gong ₁ , Q J Guo ₈ , X Y Guo ₅ , L He ₄ , S M He ₅ , J W Hu ₁ , H X Huang ₉ , T C Huang ₁₀ , H T Jia ₇ , X Jiang ₇ , S Karmakar ₃ , H B Li ₃ , J M Li ₁ , J Li ₁ , Q Y Li ₇ , R M J Li ₇ , X Q Li ₁₁ , Y L Li ₁ , Y F Liang ₁ , B Liao ₆ , F K Lin ₃ , S T Lin ₇ , S K Liu ₇ , Y D Liu ₆ , Y Liu ₇ , Y Y Liu ₆ , Z Z Liu ₁ , Y C Mao ₈ , Q Y Nie ₁ , J H Ning ₅ , H Pan ₄ , N C Qi ₅ , J Ren ₉ , X C Ruan ₉ , Z She ₁ , M K Singh _{3,

12} , T X Sun ₆ , C J Tang ₇ , W Y Tang ₁ , Y Tian ₁ , G F Wang ₆ , L Wang ₁₃ , Q Wang _{1,

2} , Y Wang _{1,

2} , Y X Wang ₈ , H T Wong ₃ , S Y Wu ₅ , Y C Wu ₁ , H Y Xing ₇ , R Xu ₁ , Y Xu ₁₁ , T Xue ₁ , Y L Yan ₇ , L T Yang ₁ , N Yi ₁ , C X Yu ₁₁ , H J Yu ₄ , J F Yue ₅ , M Zeng ₁ , Z Zeng ₁ , B T Zhang ₁ , F S Zhang ₆ , L Zhang ₇ , Z H Zhang ₁ , Z Y Zhang ₁ , K K Zhao ₇ , M G Zhao ₁₁ , J F Zhou ₅ , Z Y Zhou ₉ , J J Zhu ₇ ,

Affiliation

Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
Department of Physics, Tsinghua University, Beijing 100084.
Institute of Physics, Academia Sinica, Taipei 11529.
NUCTECH Company, Beijing 100084.
YaLong River Hydropower Development Company, Chengdu 610051.
College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875.
College of Physics, Sichuan University, Chengdu 610065.
School of Physics, Peking University, Beijing 100871.
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413.
Sino-French Institute of Nuclear and Technology, Sun Yat-sen University, Zhuhai 519082.
School of Physics, Nankai University, Tianjin 300071.
Department of Physics, Banaras Hindu University, Varanasi 221005.
Department of Physics, Beijing Normal University, Beijing 100875.

A search for exotic dark matter (DM) in the sub-GeV mass range has been conducted using 205 kg day data taken from a

p

-type point contact germanium detector of the CDEX-10 experiment at China’s Jinping underground laboratory. New low-mass dark matter searching channels, neutral current fermionic DM absorption (

χ + A \to ν + A

) and DM-nucleus

3 \to 2

scattering (

χ + χ + A \to ϕ + A

), have been analyzed with an energy threshold of 160 eVee. No significant signal was found; thus new limits on the DM-nucleon interaction cross section are set for both models at the sub-GeV DM mass region. A cross section limit for the fermionic DM absorption is set to be