摘要
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 XENON1 T.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 axionelectron coupling gAe<4.6×10^(-12) for an axion mass less than 0.1 keV/c^(2) and the neutrino magnetic moment μv<4.9×10^(-11)μB at 90%confidence level.The observed excess from XENON1 T is within our experimental constraints.
作者
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
Ning Zhou
周小朋;曾鑫宁;宁旭阳;阿布都沙拉木·阿布都克力木;陈葳;谌勋;陈云华;程晨;崔祥仪;樊英杰;方德清;符长波;付孟婷;耿立升;Karl Giboni;顾琳慧;郭绪元;韩柯;何昶达;黄迪;黄焱;黄彦霖;黄周;季向东;巨永林;李帅杰;刘华萱;刘江来;芦晓盈;马文博;马余刚;冒亚军;孟月;倪恺翔;宁金华;任祥祥;商长松;申国防;司琳;谈安迪;王安庆;王宏伟;王萌;王秋红;王思广;王为;王秀丽;王舟;武蒙蒙;吴世勇;邬维浩;夏经铠;肖梦姣;谢鹏伟;燕斌斌;杨继军;杨勇;喻纯旭;袁鞠敏;袁影;张丹;张涛;赵力;郑其斌;周济芳;周宁(INPAC,School of Physics and Astronomy,Shanghai Jiao Tong University,and Shanghai Key Laboratory for Particle Physics and Cosmology,Shanghai 200240,China;School of Physics,Beihang University,Beijing 100191,China;Shanghai Jiao Tong University Sichuan Research Institute,Chengdu 610213,China;Yalong River Hydropower Development Company,Ltd.,288 Shuanglin Road,Chengdu 610051,China;School of Physics,Sun Yat-Sen University,Guangzhou 510275,China;Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai 200240,China;School of Physics,Nankai University,Tianjin 300071,China;Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE),Institute of Modern Physics,Hehai University,Shanghai 200433,China;School of Physics,Peking University,Beijing 100871,China;International Research Center for Nuclei and Particles in the Cosmos&Beijing Key Laboratory of Advanced Nuclear Materials and Physics,Beihang University,Beijing 100191,China;School of Medical Instrument and Food Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Department of Physics,University of Maryland,College Park,Maryland 20742,USA;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE),Shandong University,Jinan 250100,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China;Center for High Energy Physics,Peking University,Beijing 100871,China)
基金
Supported in part by the National Key R&D Program of China(Grant No.2016YFA0400301)
the National Natural Science Foundation of China(Grant Nos.11525522,11775141,and 11755001)
the Double First Class Plan of the Shanghai Jiao Tong University,the China Postdoctoral Science Foundation(Grant No.2018M640036)
the Office of Science and Technology,Shanghai Municipal Government(Grant Nos.11DZ2260700,16DZ2260200,and 18JC1410200)
the Key Laboratory for Particle Physics,Astrophysics and Cosmology,Ministry of Education,for important support
sponsorship from the Chinese Academy of Sciences Center for Excellence in Particle Physics(CCEPP)
the Hongwen Foundation in Hong Kong
the Tencent Foundation in China。
