Author:
Zhou Xiaopeng,Zeng Xinning,Ning Xuyang,Abdukerim Abdusalam,Chen Wei,Chen Xun,Chen Yunhua,Cheng Chen,Cui Xiangyi,Fan Yingjie,Fang Deqing,Fu Changbo,Fu Mengting,Geng Lisheng,Giboni Karl,Gu Linhui,Guo Xuyuan,Han Ke,He Changda,Huang Di,Huang Yan,Huang Yanlin,Huang Zhou,Ji Xiangdong,Ju Yonglin,Li Shuaijie,Liu Huaxuan,Liu Jianglai,Lu Xiaoying,Ma Wenbo,Ma Yugang,Mao Yajun,Meng Yue,Ni Kaixiang,Ning Jinhua,Ren Xiangxiang,Shang Changsong,Shen Guofang,Si Lin,Tan Andi,Wang Anqing,Wang Hongwei,Wang Meng,Wang Qiuhong,Wang Siguang,Wang Wei,Wang Xiuli,Wang Zhou,Wu Mengmeng,Wu Shiyong,Wu Weihao,Xia Jingkai,Xiao Mengjiao,Xie Pengwei,Yan Binbin,Yang Jijun,Yang Yong,Yu Chunxu,Yuan Jumin,Yuan Ying,Zhang Dan,Zhang Tao,Zhao Li,Zheng Qibin,Zhou Jifang,Zhou Ning
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⋅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
Ae < 4.6 × 10–12 for an axion mass less than 0.1 keV/c
2 and the neutrino magnetic moment μν
< 4.9 × 10–11
μ
B at 90 % confidence level. The observed excess from XENON1T is within our experimental constraints.
Subject
General Physics and Astronomy