Dark matter direct search sensitivity of the PandaX-4T experiment

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英文篇名：Dark matter direct search sensitivity of the PandaX-4T experiment 作者：HongGuang ; Zhang ; Abdusalam ; Abdukerim ; Wei ; Chen ; Xun ; Chen ; YunHua ; Chen ; XiangYi ; Cui ; BinBin ; Dong ; DeQing ; Fang ; ChangBo ; Fu ; Karl ; Giboni ; Franco ; Giuliani ; LinHui ; Gu ; XuYuan ; Guo ; ZhiFan ; Guo ; Ke ; Han ; ChangDa ; He ; ShengMing ; He ; Di ; Huang ; XingTao ; Huang ; Zhou ; Huang ; Peng ; Ji ; XiangDong ; Ji ; YongLin ; Ju ; ShaoLi ; Li ; Yao ; Li ; Heng ; Lin ; HuaXuan ; Liu ; JiangLai ; Liu ; YuGang ; Ma ; YaJun ; Mao ; KaiXiang ; Ni ; JinHua ; Ning ; XiangXiang ; Ren ; Fang ; Shi ; AnDi ; Tan ; AnQing ; Wang ; Cheng ; Wang ; HongWei ; Wang ; Meng ; Wang ; QiuHong ; Wang ; SiGuang ; Wang ; XiuLi ; Wang ; XuMing ; Wang ; Zhou ; Wang ; MengMeng ; Wu ; ShiYong ; Wu ; JingKai ; Xia ; MengJiao ; Xiao ; PengWei ; Xie ; BinBin ; Yan ; JiJun ; Yang ; Yong ; Yang ; ChunXu ; Yu ; JuMin ; Yuan ; JianFeng ; Yue ; Dan ; Zhang ; Tao ; Zhang ; Li ; Zhao ; QiBin ; Zheng ; JiFang ; Zhou ; Ning ; Zhou ; XiaoPeng ; Zhou 英文作者：HongGuang Zhang;Abdusalam Abdukerim;Wei Chen;Xun Chen;YunHua Chen;XiangYi Cui;BinBin Dong;DeQing Fang;ChangBo Fu;Karl Giboni;Franco Giuliani;LinHui Gu;XuYuan Guo;ZhiFan Guo;Ke Han;ChangDa He;ShengMing He;Di Huang;XingTao Huang;Zhou Huang;Peng Ji;XiangDong Ji;YongLin Ju;ShaoLi Li;Yao Li;Heng Lin;HuaXuan Liu;JiangLai Liu;YuGang Ma;YaJun Mao;KaiXiang Ni;JinHua Ning;XiangXiang Ren;Fang Shi;AnDi Tan;AnQing Wang;Cheng Wang;HongWei Wang;Meng Wang;QiuHong Wang;SiGuang Wang;XiuLi Wang;XuMing Wang;Zhou Wang;MengMeng Wu;ShiYong Wu;JingKai Xia;MengJiao Xiao;PengWei Xie;BinBin Yan;JiJun Yang;Yong Yang;ChunXu Yu;JuMin Yuan;JianFeng Yue;Dan Zhang;Tao Zhang;Li Zhao;QiBin Zheng;JiFang Zhou;Ning Zhou;XiaoPeng Zhou;Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of Nuclear and Particle Physics (INPC) (INPC) and School of Physics and Astronomy,Shanghai Jiao Tong University;School of Physics and Technology, Xinjiang University;Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of Nuclear and Particle Physics (INPC) and School of Physics and Astronomy,Shanghai Jiao Tong University;Yalong River Hydropower Development Company, Ltd.;Shanghai Institute of Applied Physics, Chinese Academy of Sciences;School of Mechanical Engineering, Shanghai Jiao Tong University;School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE)(MOE), Shandong University;School of Physics, Nankai University;Tsung-Dao Lee Institute;School of Physics, Peking University;Department of Physics, University of Maryland, College Park;School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE), Shandong University;Center of High Energy Physics, Peking University;School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology; 英文关键词：dark matter;;WIMPs;;direct detection;;xenon 中文刊名：JGXG 英文刊名：中国科学:物理学 力学 天文学(英文版) 机构：Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of Nuclear and Particle Physics (INPC) (INPC) and School of Physics and Astronomy,Shanghai Jiao Tong University;School of Physics and Technology, Xinjiang University;Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of Nuclear and Particle Physics (INPC) and School of Physics and Astronomy,Shanghai Jiao Tong University;Yalong River Hydropower Development Company, Ltd.;Shanghai Institute of Applied Physics, Chinese Academy of Sciences;School of Mechanical Engineering, Shanghai Jiao Tong University;School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE)(MOE), Shandong University;School of Physics, Nankai University;Tsung-Dao Lee Institute;School of Physics, Peking University;Department of Physics, University of Maryland, College Park;School of Physics and Key Laboratory of Particle Physics and Particle Irradiation(MOE), Shandong University;Center of High Energy Physics, Peking University;School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology; 出版日期：2018-08-28 14:24 出版单位：Science China(Physics,Mechanics & Astronomy) 年：2019 期：v.62 基金：supported by a 985-Ⅲ grant from Shanghai Jiao Tong University,the National Natural Science Foundation of China(Grant Nos.11435008,11455001,11505112,11525522,11775141,and 11755001);; the Ministry of Science and Technology of China(Grant No.2016YFA0400301);; the Office of Science and Technology,Shanghai Municipal Government(Grant Nos.11DZ2260700,and 16DZ2260200);; the Key Laboratory for Particle Physics,Astrophysics and Cosmology,Ministry of Education;; supported in part by the Chinese Academy of Sciences Center for Excellence in Particle Physics(CCEPP)and Hongwen Foundation in Hong Kong 语种：英文; 页：JGXG201903006 页数：9 CN：03 ISSN：11-5849/N 分类号：53-61

摘要

The Panda X-4T experiment, a 4-ton scale dark matter direct detection experiment, is being planned at the China Jinping Underground Laboratory. In this paper we present a simulation study of the expected background in this experiment. In a 2.8-ton fiducial mass and the signal region between 1-10 keV electron equivalent energy, the total electron recoil background is found to be 4.9 × 10~(-5) kg~(-1) d~(-1) keV~(-1). The nuclear recoil background in the same region is 2.8 × 10~(-7) kg~(-1) d~(-1) keV~(-1). With an exposure of 5.6 ton-years, the sensitivity of Panda X-4 T could reach a minimum spin-independent dark matter-nucleon cross section of 6 × 10~(-48) cm~2 at a dark matter mass of 40 Ge V/c~2.
        The Panda X-4T experiment, a 4-ton scale dark matter direct detection experiment, is being planned at the China Jinping Underground Laboratory. In this paper we present a simulation study of the expected background in this experiment. In a 2.8-ton fiducial mass and the signal region between 1-10 keV electron equivalent energy, the total electron recoil background is found to be 4.9 × 10~(-5) kg~(-1) d~(-1) keV~(-1). The nuclear recoil background in the same region is 2.8 × 10~(-7) kg~(-1) d~(-1) keV~(-1). With an exposure of 5.6 ton-years, the sensitivity of Panda X-4 T could reach a minimum spin-independent dark matter-nucleon cross section of 6 × 10~(-48) cm~2 at a dark matter mass of 40 Ge V/c~2.

引文

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