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Neutron-induced nuclear recoil background in the PandaX-4T experiment

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【作者】 黄周申国防王秋红阿布都沙拉木·阿布都克力木薄子豪陈葳谌勋陈云华程晨成云珊崔祥仪樊英杰方德清符长波付孟婷耿立升Karl Giboni顾琳慧郭绪元韩晨成韩柯何昶达何金荣黄迪黄彦霖侯汝全季向东巨永林李晨翔李名川李舒李帅杰林箐刘江来芦晓盈罗棱尹马文博马余刚冒亚军孟月宁旭阳祁宁春钱志成任祥祥Nasir Shaheed商长松司琳孙文良谈安迪陶奕王安庆王萌王少博王思广王为王秀丽王舟武蒙蒙邬维浩夏经铠肖梦姣肖翔谢鹏伟燕斌斌颜玺雨杨继军杨勇喻纯旭袁鞠敏袁影张丹张敏祯张鹏张涛赵力郑其斌周济芳周宁周小朋周永

【Author】 Zhou Huang;Guofang Shen;Qiuhong Wang;Abdusalam Abdukerim;Zihao Bo;Wei Chen;Xun Chen;Yunhua Chen;Chen Cheng;Yunshan Cheng;Xiangyi Cui;Yingjie Fan;Deqing Fang;Changbo Fu;Mengting Fu;Lisheng Geng;Karl Giboni;Linhui Gu;Xuyuan Guo;Chencheng Han;Ke Han;Changda He;Jinrong He;Di Huang;Yanlin Huang;Ruquan Hou;Xiangdong Ji;Yonglin Ju;Chenxiang Li;Mingchuan Li;Shu Li;Shuaijie Li;Qing Lin;Jianglai Liu;Xiaoying Lu;Lingyin Luo;Wenbo Ma;Yugang Ma;Yajun Mao;Yue Meng;Xuyang Ning;Ningchun Qi;Zhicheng Qian;Xiangxiang Ren;Nasir Shaheed;Changsong Shang;Lin Si;Wenliang Sun;Andi Tan;Yi Tao;Anqing Wang;Meng Wang;Shaobo Wang;Siguang Wang;Wei Wang;Xiuli Wang;Zhou Wang;Mengmeng Wu;Weihao Wu;Jingkai Xia;Mengjiao Xiao;Xiang Xiao;Pengwei Xie;Binbin Yan;Xiyu Yan;Jijun Yang;Yong Yang;Chunxu Yu;Jumin Yuan;Ying Yuan;Dan Zhang;Minzhen Zhang;Peng Zhang;Tao Zhang;Li Zhao;Qibin Zheng;Jifang Zhou;Ning Zhou;Xiaopeng Zhou;Yong Zhou;School of Physics and Astronomy, Shanghai Jiao Tong University, Key Laboratory for Particle Astrophysics and Cosmology (MoE), Shanghai Key Laboratory for Particle Physics and Cosmology;School of Physics, Beihang University;Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University;Shanghai Jiao Tong University Sichuan Research Institute;Yalong River Hydropower Development Company, Ltd.;School of Physics, Sun Yat-Sen University;Research Center for Particle Science and Technology, Institute of Frontier and Interdisciplinary Scienc, Shandong University;Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education, Shandong University;Tsung-Dao Lee Institute, Shanghai Jiao Tong University;School of Physics, Nankai University;School of Physics, Peking University;Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University;School of Physics and Microelectronics, Zhengzhou University;School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology;Department of Physics, University of Maryland;School of Mechanical Engineering, Shanghai Jiao Tong University;State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China;Department of Modern Physics, University of Science and Technology of China;SJTU Paris Elite Institute of Technology, Shanghai Jiao Tong University;

【通讯作者】 周宁;

【机构】 School of Physics and Astronomy, Shanghai Jiao Tong University, Key Laboratory for Particle Astrophysics and Cosmology (MoE), Shanghai Key Laboratory for Particle Physics and CosmologySchool of Physics, Beihang UniversityKey Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan UniversityShanghai Jiao Tong University Sichuan Research InstituteYalong River Hydropower Development Company, Ltd.School of Physics, Sun Yat-Sen UniversityResearch Center for Particle Science and Technology, Institute of Frontier and Interdisciplinary Scienc, Shandong UniversityKey Laboratory of Particle Physics and Particle Irradiation of Ministry of Education, Shandong UniversityTsung-Dao Lee Institute, Shanghai Jiao Tong UniversitySchool of Physics, Nankai UniversitySchool of Physics, Peking UniversityBeijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang UniversitySchool of Physics and Microelectronics, Zhengzhou UniversitySchool of Medical Instrument and Food Engineering, University of Shanghai for Science and TechnologyDepartment of Physics, University of MarylandSchool of Mechanical Engineering, Shanghai Jiao Tong UniversityState Key Laboratory of Particle Detection and Electronics, University of Science and Technology of ChinaDepartment of Modern Physics, University of Science and Technology of ChinaSJTU Paris Elite Institute of Technology, Shanghai Jiao Tong University

【摘要】 Neutron-induced nuclear recoil background is critical to dark matter searches in the PandaX-4T liquid xenon experiment.In this study,we investigate the features of neutron background in liquid xenon and evaluate its contribution in single scattering nuclear recoil events using three methods.The first method is fully based on Monte Carlo simulations.The last two are data-driven methods that also use mu ltiple scattering signals and high energy signals in the data.In the PandaX-4T commissioning data with an exposure of 0.63 tonne-year,all these methods give a consistent result,i.e.,there are 1.15±0.57 neutron-induced backgrounds in the dark matter signal region within an approximated nuclear recoil energy window between 5 and 100 keV.

【Abstract】 Neutron-induced nuclear recoil background is critical to dark matter searches in the PandaX-4T liquid xenon experiment.In this study,we investigate the features of neutron background in liquid xenon and evaluate its contribution in single scattering nuclear recoil events using three methods.The first method is fully based on Monte Carlo simulations.The last two are data-driven methods that also use mu ltiple scattering signals and high energy signals in the data.In the PandaX-4T commissioning data with an exposure of 0.63 tonne-year,all these methods give a consistent result,i.e.,there are 1.15±0.57 neutron-induced backgrounds in the dark matter signal region within an approximated nuclear recoil energy window between 5 and 100 keV.

【基金】 Supported in part by grants from National Science Foundation of China (12090061, 12005131, 11905128, 11925502);the Ministry of Science and Technology of China (2016YFA0400301);the Office of Science and Technology,Shanghai Municipal Government (18JC1410200)
  • 【文献出处】 Chinese Physics C ,中国物理C , 编辑部邮箱 ,2022年11期
  • 【分类号】O571.5
  • 【下载频次】5
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