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

作　　者：Zhenhua Zhang Litao Yang Qian Yue Kejun Kang Yuanjing Li Haipeng An Greeshma C. 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 

机构地区：[1]Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics,Tsinghua University,Beijing 100084,China [2]Department of Physics,Tsinghua University,Beijing 100084,China [3]Institute of Physics,Academia Sinica,Taipei 11529,China [4]NUCTECH Company,Beijing 100084,China [5]YaLong River Hydropower Development Company,Chengdu 610051,China [6]College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China [7]College of Physics,Sichuan University,Chengdu 610065,China [8]School of Physics,Peking University,Beijing 100871,China [9]Department of Nuclear Physics,China Institute of Atomic Energy,Beijing 102413,China [10]Sino-French Institute of Nuclear and Technology,Sun Yet-sen University,Zhuhai 519082,China [11]School of Physics,Nankai University,Tianjin 300071,China [12]Department of Physics,Banaras Hindu University,Varanasi 221005,India [13]Department of Physics,Beijing Normal University,Beijing 100875,China [14]不详

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第10期83-91,共9页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant Nos.2023YFA1607100,and 2022YFA1605000);the National Natural Science Foundation of China(Grant Nos.12322511,12175112,12005111,and 11725522)。

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 of detectingχfrom evaporating primordial black holes(PBHs).We search forχemitted 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 fPBH.Using 205.4 kg·day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory,we exclude theχ-electron(χ-e)elastic-scattering cross sectionσ_(χe)~5×10^(-29)cm^(2)forχwith a mass■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_(χ),σ_(χe))can be determined in the future,DD experiments are expected to impose strong constraints on fPBHfor large MPBHs.

关 键 词：CDEX primordial black hole light dark matter particle dark matter-electron scattering high purity germanium detector 

分 类 号：P145.9[天文地球—天体物理]