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

被引：146

作者：

Zhang, HongGuang ^{[1
,2
]}

Abdukerim, Abdusalam ^{[3
]}

Chen, Wei ^{[1
,2
]}

Chen, Xun ^{[1
,2
]}

Chen, YunHua ^{[4
]}

Cui, XiangYi ^{[1
,2
]}

Dong, BinBin ^{[1
,2
]}

Fang, DeQing ^{[5
]}

Fu, ChangBo ^{[1
,2
]}

Giboni, Karl ^{[1
,2
]}

Giuliani, Franco ^{[1
,2
]}

Gu, LinHui ^{[1
,2
]}

Guo, XuYuan ^{[4
]}

Guo, ZhiFan ^{[6
]}

Han, Ke ^{[1
,2
]}

He, ChangDa ^{[1
,2
]}

He, ShengMing ^{[4
]}

Huang, Di ^{[1
,2
]}

Huang, XingTao ^{[7
,8
]}

Huang, Zhou ^{[1
,2
]}

Ji, Peng ^{[9
]}

Ji, XiangDong ^{[1
,2
,10
]}

Ju, YongLin ^{[6
]}

Li, ShaoLi ^{[1
,2
]}

Li, Yao ^{[1
,2
]}

Lin, Heng ^{[1
,2
]}

Liu, HuaXuan ^{[6
]}

Liu, JiangLai ^{[1
,2
,10
]}

Ma, YuGang ^{[5
]}

Mao, YaJun ^{[11
]}

Ni, KaiXiang ^{[1
,2
]}

Ning, JinHua ^{[4
]}

Ren, XiangXiang ^{[1
,2
]}

Shi, Fang ^{[1
,2
]}

Tan, AnDi ^{[12
]}

Wang, AnQing ^{[7
,8
]}

Wang, Cheng ^{[6
]}

Wang, HongWei ^{[5
]}

Wang, Meng ^{[7
,8
]}

Wang, QiuHong ^{[5
]}

Wang, SiGuang ^{[11
]}

Wang, XiuLi ^{[6
]}

Wang, XuMing ^{[1
,2
]}

Wang, Zhou ^{[6
]}

Wu, MengMeng ^{[9
]}

Wu, ShiYong ^{[4
]}

Xia, JingKai ^{[1
,2
]}

Xiao, MengJiao ^{[12
,13
]}

Xie, PengWei ^{[10
]}

Yan, BinBin ^{[7
,8
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Nucl & Particle Phys INPAC, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China

[3] Xinjiang Univ, Sch Phys & Technol, Urumqi 830046, Peoples R China

[4] Yalong River Hydropower Dev Co Ltd, Chengdu 610051, Sichuan, Peoples R China

[5] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[6] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China

[7] Shandong Univ, Sch Phys, MOE, Jinan 250100, Shandong, Peoples R China

[8] Shandong Univ, Key Lab Particle Phys & Particle Irradiat, MOE, Jinan 250100, Shandong, Peoples R China

[9] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China

[10] Tsung Dao Lee Inst, Shanghai 200240, Peoples R China

[11] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[12] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[13] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China

[14] Univ Shanghai Sci & Technol, Sch Med Instrument & Food Engn, Shanghai 200093, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2019年 / 62卷 / 03期

基金：

中国国家自然科学基金;

关键词：

dark matter; WIMPs; direct detection; xenon;

D O I：

10.1007/s11433-018-9259-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The PandaX-4T experiment, a 4-ton scale dark matter direct detection experiment, is being planned at the China Jinping Un- derground 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 x 10(-5) kg(-1)d(-1)keV(-1). The nuclear recoil background in the same region is 2:8 x 10(-7) kg(-1)d(-1)keV(-1). With an exposure of 5.6 ton-years, the sensitivity of PandaX-4T could reach a minimum spin-independent dark matter-nucleon cross section of 6 x 10(-48) cm(2) at a dark matter mass of 40 GeV/c(2).

引用

页数：9

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