在 CDEX-10 实验中通过电子散射探测来自蒸发原始黑洞的暗物质粒子

IF 6.4 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-26 DOI:10.1007/s11433-024-2446-2

Zhenhua Zhang, Litao Yang, Qian Yue, Kejun Kang, Yuanjing Li, Haipeng An, C. Greeshma, Jianping Chang, Yunhua Chen, Jianping Cheng, Wenhan Dai, Zhi Deng, Changhao Fang, Xinping Geng, Hui Gong, Qiuju Guo, Tao Guo, Xuyuan Guo, Li He, Shengming He, Jinwei Hu, Hanxiong Huang, Tuchen Huang, Lin Jiang, S. Karmakar, Haubin Li, Hanyu Li, Jianmin Li, Jin Li, Qianyun Li, Renmingjie Li, Xueqian Li, Yulan Li, Yifan Liang, Bin Liao, FongKay Lin, ShinTed Lin, Jiaxuan Liu, Shukui Liu, Yandong Liu, Yu Liu, Yuanyuan Liu, Hao Ma, Yucai Mao, Qiyuan Nie, Jinhua Ning, Hui Pan, Ningchun Qi, Jie Ren, Xichao Ruan, Monoj Kumar Singh, Tianxi Sun, Changjian Tang, Yang Tian, Guangfu Wang, Junzheng Wang, Li Wang, Qing Wang, Yufeng Wang, Yunxiang Wang, Henry Tsz-King Wong, Shiyong Wu, Yucheng Wu, Haoyang Xing, Rui Xu, Yin Xu, Tao Xue, Yulu Yan, Nan Yi, Chunxu Yu, Haijun Yu, Jianfeng Yue, Ming Zeng, Zhi Zeng, Bingtao Zhang, Fengshou Zhang, Lei Zhang, Zhenyu Zhang, Jizhong Zhao, Kangkang Zhao, Minggang Zhao, Jifang Zhou, Zuying Zhou, Jingjun Zhu, CDEX Collaboration

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引用次数: 0

摘要

暗物质（DM）是宇宙的主要组成部分。然而，迄今为止，在暗物质直接探测（DD）实验中还没有发现暗物质粒子（以 "χ "表示）的确切证据。从蒸发的原始黑洞（PBHs）中探测χ是一个新颖的概念。我们通过研究原始黑洞与目标电子的相互作用来寻找原始黑洞发射的χ。在目前的 PBH 丰度 fPBH 限制下，所研究的 PBH 质量从 1 × 1015 g 到 7 × 1016 g 不等。利用在中国锦屏地下实验室进行的CDEX-10实验获得的205.4千克-天的数据，我们排除了质量为mχ ≲ 0.1 keV的χ-电子（χ-e）的弹性散射截面（(\sigma_{\chi}^{e}}\）∼ 5 × 10-29 cm2。CDEX-10 具有更高的辐射背景，但能量阈值（160 eV）更低，它填补了之前工作的部分空白。如果将来（（m_{chi}, （sigma_{\chi}^{e}}\））能够确定，DD实验有望对大型MPBH的fPBH施加强有力的约束。

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Probing dark matter particles from evaporating primordial black holes via electron scattering in the CDEX-10 experiment

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 of 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 × 10¹⁵ to 7 × 10¹⁶ 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 \(\sigma_{{\chi}^{e}}\) ∼ 5 × 10⁻²⁹ cm² for χ with a mass m_χ ≲ 0.1 keV from our results. With the higher radiation background but lower energy threshold (160 eV), CDEX-10 fills a part of the gap in the previous work. If (\(m_{\chi}, \ \sigma_{{\chi}^{e}}\)) 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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来源期刊

Science China Physics, Mechanics & Astronomy PHYSICS, MULTIDISCIPLINARY-

CiteScore

10.30

自引率

6.20%

发文量

4047

审稿时长

3 months

期刊介绍： Science China Physics, Mechanics & Astronomy, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research. Science China Physics, Mechanics & Astronomy, is published in both print and electronic forms. It is indexed by Science Citation Index. Categories of articles: Reviews summarize representative results and achievements in a particular topic or an area, comment on the current state of research, and advise on the research directions. The author’s own opinion and related discussion is requested. Research papers report on important original results in all areas of physics, mechanics and astronomy. Brief reports present short reports in a timely manner of the latest important results.