Study of background from accidental coincidence signals in the PandaX-Ⅱexperiment

作     者：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 Wenbo Ma Yugang Ma Yajun Mao Yue Meng Kaixiang Ni Jinhua Ning Xuyang Ning Xiangxiang Ren Changsong Shang Lin Si Guofang Shen 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 Xinning Zeng Dan Zhang Tao Zhang Li Zhao Qibin Zheng Jifang Zhou Ning Zhou Xiaopeng Zhou 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;马文博;马余刚;冒亚军;孟月;倪恺翔;宁金华;宁旭阳;任祥祥;商长松;司琳;申国防;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;曾鑫宁;张丹;张涛;赵力;郑其斌;周济芳;周宁;周小朋

作者机构：School of Physics and AstronomyShanghai Jiao Tong UniversityMOE Key Laboratory for Particle Astrophysics and CosmologyShanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China Shanghai Jiao Tong University Sichuan Research InstituteChengdu 610213China Yalong River Hydropower Development CompanyLtd.288 Shuanglin RoadChengdu 610051China School of PhysicsSun Yat-Sen UniversityGuangzhou 510275China Tsung-Dao Lee InstituteShanghai 200240China School of PhysicsNankai UniversityTianjin 300071China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)Institute of Modern PhysicsFudan UniversityShanghai 200433China School of PhysicsPeking UniversityBeijing 100871China School of PhysicsBeihang UniversityBeijing 102206China Beijing Key Laboratory of Advanced Nuclear Materials and PhysicsBeihang UniversityBeijing102206China School of Physics and MicroelectronicsZhengzhou UniversityZhengzhouHenan 450001China School of Medical Instrument and Food EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China Department of PhysicsUniversity of MarylandCollege ParkMaryland 20742USA School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE)Shandong UniversityJinan 250100China Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China Center for High Energy PhysicsPeking UniversityBeijing 100871China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2022年第46卷第10期

页      面：11-24页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Supported in part by a grant from the Ministry of Science and Technology of China(2016YFA0400301) National Science Foundation of China(12090060,12005131,11905128,11925502,11775141) Office of Science and Technology,Shanghai Municipal Government(18JC1410200) 

主　　题：dark matter xenon detector background accidental coincidence machine learning 

摘      要：Ⅰ.INTRODUCTION The direct detection of dark matter particles,especially the weakly interacting massive particles(WIMPs),is being actively carried out by a couple of experiments worldwide[1].In recent years,the PandaX-Ⅱ experiment located in the China Jinping Underground Laboratory(CJPL)[1-3],which uses the technology of dual phase liquid xenon time projection chambers(TPCs),has pushed the limits of the cross section between WIMPs and nucleons to a new level for most of the possible WIMP masses;other experiments of the same type are also being performed[4–10].