在熊猫X-4T实验中寻找宇宙射线增强的亚兆电子伏特暗物质-电子散射

Search for Cosmic-Ray Boosted Sub-MeV Dark-Matter-Electron Scattering in PandaX-4T.

作者信息

Shang Xiaofeng, Abdukerim Abdusalam, Bo Zihao, Chen Wei, Chen Xun, Chen Yunhua, Cheng Chen, Cheng Zhaokan, Cui Xiangyi, Fan Yingjie, Fang Deqing, Geng Lisheng, Giboni Karl, Guo Xuyuan, Han Chencheng, Han Ke, He Changda, He Jinrong, Huang Di, Huang Junting, Huang Zhou, Hou Ruquan, Hou Yu, Ji Xiangdong, Ji Xiangpan, Ju Yonglin, Li Chenxiang, Li Jiafu, Li Mingchuan, Li Shuaijie, Li Tao, Lin Qing, Liu Jianglai, Lu Congcong, Lu Xiaoying, Luo Lingyin, Luo Yunyang, Ma Wenbo, Ma Yugang, Mao Yajun, Meng Yue, Ning Xuyang, Pang Binyu, Qi Ningchun, Qian Zhicheng, Ren Xiangxiang, Shaheed Nasir, Shao Xiyuan, Shen Guofang, Shen Manbin, Si Lin, Sun Wenliang, Tao Yi, Wang Anqing, Wang Meng, Wang Qiuhong, Wang Shaobo, Wang Siguang, Wang Wei, Wang Xiuli, Wang Xu, Wang Zhou, Wei Yuehuan, Wu Mengmeng, Wu Weihao, Wu Yuan, Xiao Mengjiao, Xiao Xiang, Xiong Kaizhi, Yan Binbin, Yan Xiyu, Yang Yong, Yu Chunxu, Yuan Ying, Yuan Zhe, Yun Youhui, Zeng Xinning, Zhang Minzhen, Zhang Peng, Zhang Shibo, Zhang Shu, Zhang Tao, Zhang Wei, Zhang Yang, Zhang Yingxin, Zhang Yuanyuan, Zhao Li, Zhou Jifang, Zhou Ning, Zhou Xiaopeng, Zhou Yubo, Zhou Zhizhen, Ge Shao-Feng, Xia Chen

机构信息

School of Physics and Astronomy, <a href="https://ror.org/0220qvk04">Shanghai Jiao Tong University</a>, Key Laboratory for Particle Astrophysics and Cosmology (MoE), Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai 200240, China.

New Cornerstone Science Laboratory, Tsung-Dao Lee Institute, <a href="https://ror.org/0220qvk04">Shanghai Jiao Tong University</a>, Shanghai, 200240, China.

出版信息

Phys Rev Lett. 2024 Sep 6;133(10):101805. doi: 10.1103/PhysRevLett.133.101805.

DOI:10.1103/PhysRevLett.133.101805

PMID:39303260

Abstract

We report the first search for the elastic scatterings between cosmic-ray boosted sub-MeV dark matter (DM) and electrons in the PandaX-4T liquid xenon experiment. Sub-MeV DM particles can be accelerated by scattering with electrons in the cosmic rays and produce detectable electron recoil signals in the detector. Using the commissioning data from PandaX-4T of 0.63 tonne·year exposure, we set new constraints on DM-electron scattering cross sections for DM masses ranging from 10 eV/c^{2} to 3 keV/c^{2}.

摘要

我们报告了在熊猫X-4T液氙实验中首次对宇宙射线增强的亚兆电子伏特暗物质（DM）与电子之间的弹性散射进行的搜索。亚兆电子伏特暗物质粒子可以通过与宇宙射线中的电子散射而加速，并在探测器中产生可探测的电子反冲信号。利用熊猫X-4T曝光量为0.63吨·年的调试数据，我们对质量范围从10电子伏特/c²到3千电子伏特/c²的暗物质-电子散射截面设定了新的限制。