Probing Dark Matter Particles from Evaporating Primordial Black Holes via Electron Scattering in the CDEX-10 Experiment

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

arxiv（2024）

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摘要

Dark matter (DM) is a major constituent of the Universe. However, no definite evidence of DM particles (denoted as “χ") has been found in DM direct detection (DD) experiments to date. There is a novel concept that detecting χ from evaporating primordial black holes (PBHs). We search for χ emitted from PBHs by investigating their interaction with target electrons. The examined PBH masses range from 1×10^15 to 7×10^16 g under the current limits of PBH abundance f_PBH. Using 205.4 kg·day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory, we exclude the χ–electron (χ–e) elastic-scattering cross section σ_χ e∼ 5×10^-29 cm^2 for χ with a mass m_χ≲ 0.1 keV from our results. If (m_χ, σ_χ e) can be determined in the future, DD experiments are expected to impose strong constraints on f_PBH for large M_PBHs.

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