Exotic Dark Matter Search with CDEX-10 Experiment at China's Jinping Underground Laboratory

W. H. Dai; L. P. Jia; H. Ma; Q. Yue; K. J. Kang; Y. J. Li; H. P. An; Greeshma C.; J. P. Chang; Y. H. Chen; J. P. Cheng; Z. Deng; C. H. Fang; X. P. Geng; H. Gong; Q. J. Guo; X. Y. Guo; L. He; S. M. He; J. W. Hu; H. X. Huang; T. C. Huang; H. T. Jia; X. Jiang; S. Karmakar; H. B. Li; J. M. Li; J. Li; Q. Y. Li; R. M. J. Li; X. Q. Li; Y. L. Li; Y. F. Liang; B. Liao; F. K. Lin; S. T. Lin; S. K. Liu; Y. D. Liu; Y. Liu; Y. Y. Liu; Z. Z. Liu; Y. C. Mao; Q. Y. Nie; J. H. Ning; H. Pan; N. C. Qi; J. Ren; X. C. Ruan; Z. She; M. K. Singh

doi:10.1103/PhysRevLett.129.221802

Exotic Dark Matter Search with CDEX-10 Experiment at China's Jinping Underground Laboratory

High Energy Physics - Experiment 2022-11-24 v2 High Energy Physics - Phenomenology

Authors: W. H. Dai , L. P. Jia , H. Ma , Q. Yue , K. J. Kang , Y. J. Li , H. P. An , Greeshma C. , J. P. Chang , Y. H. Chen , J. P. Cheng , Z. Deng , C. H. Fang , X. P. Geng , H. Gong , Q. J. Guo , X. Y. Guo , L. He , S. M. He , J. W. Hu , H. X. Huang , T. C. Huang , H. T. Jia , X. Jiang , S. Karmakar , H. B. Li , J. M. Li , J. Li , Q. Y. Li , R. M. J. Li , X. Q. Li , Y. L. Li , Y. F. Liang , B. Liao , F. K. Lin , S. T. Lin , S. K. Liu , Y. D. Liu , Y. Liu , Y. Y. Liu , Z. Z. Liu , Y. C. Mao , Q. Y. Nie , J. H. Ning , H. Pan , N. C. Qi , J. Ren , X. C. Ruan , Z. She , M. K. Singh , T. X. Sun , C. J. Tang , W. Y. Tang , Y. Tian , G. F. Wang , L. Wang , Q. Wang , Y. Wang , Y. X. Wang , H. T. Wong , S. Y. Wu , Y. C. Wu , H. Y. Xing , R. Xu , Y. Xu , T. Xue , Y. L. Yan , L. T. Yang , N. Yi , C. X. Yu , H. J. Yu , J. F. Yue , M. Zeng , Z. Zeng , B. T. Zhang , F. S. Zhang , L. Zhang , Z. H. Zhang , Z. Y. Zhang , K. K. Zhao , M. G. Zhao , J. F. Zhou , Z. Y. Zhou , J. J. Zhu

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Abstract

A search for exotic dark matter (DM) in the sub-GeV mass range has been conducted using 205 kg $\cdot$ day data taken from a p-type point contact germanium detector of CDEX-10 experiment at China Jinping underground laboratory. New low-mass dark matter searching channels, neutral current fermionic DM absorption ( $\chi+A\rightarrow \nu+A$ ) and DM-nucleus 3 $\rightarrow$ 2 scattering ( $\chi+\chi+A\rightarrow \phi+A$ ), 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 sub-GeV DM mass region. A cross section limit for the fermionic DM absorption is set to be $\rm 2.5\times 10^{-46} cm^2$ (90\% C.L.) at DM mass of 10 MeV/c $^2$ . For the DM-nucleus 3 $\rightarrow$ 2 scattering scenario, limits are extended to DM mass of 5 MeV/c $^2$ and 14 MeV/c $^2$ for the massless dark photon and bound DM final state, respectively.

Keywords

exotic dark matter sub-gev cdex-10 germanium detector absorption 3 to 2 scattering jinping underground laboratory

Cite

@article{arxiv.2209.00861,
  title  = {Exotic Dark Matter Search with CDEX-10 Experiment at China's Jinping Underground Laboratory},
  author = {W. H. Dai and L. P. Jia and H. Ma and Q. Yue and K. J. Kang and Y. J. Li and H. P. An and Greeshma C. and J. P. Chang and Y. H. Chen and J. P. Cheng and Z. Deng and C. H. Fang and X. P. Geng and H. Gong and Q. J. Guo and X. Y. Guo and L. He and S. M. He and J. W. Hu and H. X. Huang and T. C. Huang and H. T. Jia and X. Jiang and S. Karmakar and H. B. Li and J. M. Li and J. Li and Q. Y. Li and R. M. J. Li and X. Q. Li and Y. L. Li and Y. F. Liang and B. Liao and F. K. Lin and S. T. Lin and S. K. Liu and Y. D. Liu and Y. Liu and Y. Y. Liu and Z. Z. Liu and Y. C. Mao and Q. Y. Nie and J. H. Ning and H. Pan and N. C. Qi and J. Ren and X. C. Ruan and Z. She and M. K. Singh and T. X. Sun and C. J. Tang and W. Y. Tang and Y. Tian and G. F. Wang and L. Wang and Q. Wang and Y. Wang and Y. X. Wang and H. T. Wong and S. Y. Wu and Y. C. Wu and H. Y. Xing and R. Xu and Y. Xu and T. Xue and Y. L. Yan and L. T. Yang and N. Yi and C. X. Yu and H. J. Yu and J. F. Yue and M. Zeng and Z. Zeng and B. T. Zhang and F. S. Zhang and L. Zhang and Z. H. Zhang and Z. Y. Zhang and K. K. Zhao and M. G. Zhao and J. F. Zhou and Z. Y. Zhou and J. J. Zhu},
  journal= {arXiv preprint arXiv:2209.00861},
  year   = {2022}
}

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5 pages, 7 figures

Exotic Dark Matter Search with CDEX-10 Experiment at China's Jinping Underground Laboratory

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