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Constraints on Sub-GeV Dark Matter-Electron Scattering from the CDEX-10 Experiment.
Zhang, Z Y; Yang, L T; Yue, Q; Kang, K J; Li, Y J; Agartioglu, M; An, H P; Chang, J P; Chen, Y H; Cheng, J P; Dai, W H; Deng, Z; Fang, C H; Geng, X P; Gong, H; Guo, Q J; Guo, X Y; He, L; He, S M; Hu, J W; Huang, H X; Huang, T C; Jia, H T; Jiang, X; Li, H B; Li, J M; Li, J; Li, Q Y; Li, R M J; Li, X Q; Li, Y L; Liang, Y F; Liao, B; Lin, F K; Lin, S T; Liu, S K; Liu, Y D; Liu, Y; Liu, Y Y; Liu, Z Z; Ma, H; Mao, Y C; Nie, Q Y; Ning, J H; Pan, H; Qi, N C; Ren, J; Ruan, X C; Saraswat, K; Sharma, V.
Affiliation
  • Zhang ZY; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Yang LT; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Yue Q; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Kang KJ; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Li YJ; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Agartioglu M; Institute of Physics, Academia Sinica, Taipei 11529.
  • An HP; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Chang JP; Department of Physics, Tsinghua University, Beijing 100084.
  • Chen YH; NUCTECH Company, Beijing 100084.
  • Cheng JP; YaLong River Hydropower Development Company, Chengdu 610051.
  • Dai WH; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Deng Z; College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875.
  • Fang CH; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Geng XP; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Gong H; College of Physics, Sichuan University, Chengdu 610065.
  • Guo QJ; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Guo XY; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • He L; School of Physics, Peking University, Beijing 100871.
  • He SM; YaLong River Hydropower Development Company, Chengdu 610051.
  • Hu JW; NUCTECH Company, Beijing 100084.
  • Huang HX; YaLong River Hydropower Development Company, Chengdu 610051.
  • Huang TC; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Jia HT; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413.
  • Jiang X; Sino-French Institute of Nuclear and Technology, Sun Yat-sen University, Zhuhai 519082.
  • Li HB; College of Physics, Sichuan University, Chengdu 610065.
  • Li JM; College of Physics, Sichuan University, Chengdu 610065.
  • Li J; Institute of Physics, Academia Sinica, Taipei 11529.
  • Li QY; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Li RMJ; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Li XQ; College of Physics, Sichuan University, Chengdu 610065.
  • Li YL; College of Physics, Sichuan University, Chengdu 610065.
  • Liang YF; School of Physics, Nankai University, Tianjin 300071.
  • Liao B; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Lin FK; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Lin ST; College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875.
  • Liu SK; Institute of Physics, Academia Sinica, Taipei 11529.
  • Liu YD; College of Physics, Sichuan University, Chengdu 610065.
  • Liu Y; College of Physics, Sichuan University, Chengdu 610065.
  • Liu YY; College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875.
  • Liu ZZ; College of Physics, Sichuan University, Chengdu 610065.
  • Ma H; College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875.
  • Mao YC; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Nie QY; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Ning JH; School of Physics, Peking University, Beijing 100871.
  • Pan H; Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084.
  • Qi NC; YaLong River Hydropower Development Company, Chengdu 610051.
  • Ren J; NUCTECH Company, Beijing 100084.
  • Ruan XC; YaLong River Hydropower Development Company, Chengdu 610051.
  • Saraswat K; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413.
  • Sharma V; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413.
Phys Rev Lett ; 129(22): 221301, 2022 Nov 23.
Article in En | MEDLINE | ID: mdl-36493436
We present improved germanium-based constraints on sub-GeV dark matter via dark matter-electron (χ-e) scattering using the 205.4 kg·day dataset from the CDEX-10 experiment. Using a novel calculation technique, we attain predicted χ-e scattering spectra observable in high-purity germanium detectors. In the heavy mediator scenario, our results achieve 3 orders of magnitude of improvement for m_{χ} larger than 80 MeV/c^{2} compared to previous germanium-based χ-e results. We also present the most stringent χ-e cross-section limit to date among experiments using solid-state detectors for m_{χ} larger than 90 MeV/c^{2} with heavy mediators and m_{χ} larger than 100 MeV/c^{2} with electric dipole coupling. The result proves the feasibility and demonstrates the vast potential of a new χ-e detection method with high-purity germanium detectors in ultralow radioactive background.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Electricity / Electrons Language: En Journal: Phys Rev Lett Year: 2022 Type: Article
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Electricity / Electrons Language: En Journal: Phys Rev Lett Year: 2022 Type: Article