1INPAC, School of Physics and Astronomy, Shanghai Jiao Tong University, and Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai 200240, China 2School of Physics, Beihang University, Beijing 100191, China 3Shanghai Jiao Tong University Sichuan Research Institute, Chengdu 610213, China 4Yalong River Hydropower Development Company, Ltd., 288 Shuanglin Road, Chengdu 610051, China 5School of Physics, Sun Yat-Sen University, Guangzhou 510275, China 6Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China 7School of Physics, Nankai University, Tianjin 300071, China 8Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China 9School of Physics, Peking University, Beijing 100871, China 10International Research Center for Nuclei and Particles in the Cosmos & Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University, Beijing 100191, China 11School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China 12Department of Physics, University of Maryland, College Park, Maryland 20742, USA 13School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China 14School of Physics and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan 250100, China 15Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 16Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China 17Center for High Energy Physics, Peking University, Beijing 100871, China
Abstract：We report a search for new physics signals using the low energy electron recoil events in the complete data set from PandaX-II, in light of the recent event excess reported by XENON1T. The data correspond to a total exposure of 100.7 ton$\cdot$day with liquid xenon. With robust estimates of the dominant background spectra, we perform sensitive searches on solar axions and neutrinos with enhanced magnetic moment. It is found that the axion-electron coupling $g_{\rm Ae} < 4.6\times 10^{-12}$ for an axion mass less than 0.1 keV/$c^2$ and the neutrino magnetic moment $\mu_{\nu} < 4.9\times 10^{-11}\mu_{\rm B}$ at 90% confidence level. The observed excess from XENON1T is within our experimental constraints.
收稿日期: 2020-12-22
出版日期: 2020-12-29
引用本文:
. [J]. 中国物理快报, 2021, 38(1): 11301-011301.
Xiaopeng Zhou, Xinning Zeng, Xuyang Ning, Abdusalam Abdukerim, Wei Chen, Xun Chen, Yunhua Chen, Chen Cheng, Xiangyi Cui, Yingjie Fan, Deqing Fang, Changbo Fu, Mengting Fu, Lisheng Geng, Karl Giboni, Linhui Gu, Xuyuan Guo, Ke Han, Changda He, Di Huang, Yan Huang, Yanlin Huang, Zhou Huang, Xiangdong Ji, Yonglin Ju, Shuaijie Li, Huaxuan Liu, Jianglai Liu, Xiaoying Lu, Wenbo Ma, Yugang Ma, Yajun Mao, Yue Meng, Kaixiang Ni, Jinhua Ning, Xiangxiang Ren, Changsong Shang, Guofang Shen, Lin Si, Andi Tan, Anqing Wang, Hongwei Wang, Meng Wang, Qiuhong Wang, Siguang Wang, Wei Wang, Xiuli Wang, Zhou Wang, Mengmeng Wu, Shiyong Wu, Weihao Wu, Jingkai Xia, Mengjiao Xiao, Pengwei Xie, Binbin Yan, Jijun Yang, Yong Yang, Chunxu Yu, Jumin Yuan, Ying Yuan, Dan Zhang, Tao Zhang, Li Zhao, Qibin Zheng, Jifang Zhou, and Ning Zhou (PandaX-II Collaboration). A Search for Solar Axions and Anomalous Neutrino Magnetic Moment with the Complete PandaX-II Data. Chin. Phys. Lett., 2021, 38(1): 11301-011301.
Szydagis M, Balajthy J, Brodsky J, Cutter J, Huang J, Kozlova E, Lenardo B, Manalaysay A, McKinsey D, Mooney M, Mueller J, Ni K, Rischbieter G, Tripathi M, Tunnell C, Velan V and Zhao Z 2018 Noble Element Simulation Technique v2.0
2021, Vol. 38 
