Dark Matter Search Results from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>1.54</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>Tonne</mml:mi><mml:mo>·</mml:mo><mml:mi>Year</mml:mi></mml:mrow></mml:math> Exposure of PandaX-4T
Zihao Bo(Shanghai Jiao Tong University), Wei Chen(Shanghai Jiao Tong University), Xun Chen(Shanghai Jiao Tong University), Yunhua Chen, Zhaokan Cheng, Xiangyi Cui(Shanghai Jiao Tong University), Yingjie Fan(Yantai University), Deqing Fang(Fudan University), Zhixing Gao(Shanghai Jiao Tong University), Lisheng Geng(Chinese Academy of Sciences), Karl Giboni(Shanghai Jiao Tong University), Xunan Guo(Beihang University), Xuyuan Guo(Beihang University), Zichao Guo(Beihang University), Chencheng Han(Shanghai Jiao Tong University), Ke Han(Shanghai Jiao Tong University), Changda He(Shanghai Jiao Tong University), Jinrong He, Di Huang(Shanghai Jiao Tong University), Houqi Huang(Shanghai Jiao Tong University), J. Huang(Shanghai Jiao Tong University), Ruquan Hou(Shanghai Jiao Tong University), Yu Hou(Shanghai Jiao Tong University), Xiangdong Ji(Nankai University), Xiangpan Ji(Nankai University), Yonglin Ju(Shanghai Jiao Tong University), Chenxiang Li(Shanghai Jiao Tong University), Jiafu Li, Mingchuan Li, Shuaijie Li(Shanghai Jiao Tong University), Tao Li, Zhiyuan Li, Q. Lin(University of Science and Technology of China), Jianglai Liu(Shanghai Jiao Tong University), Congcong Lu(Shanghai Jiao Tong University), Xiaoying Lü(Shandong University), Lingyin Luo(Peking University), Yunyang Luo(University of Science and Technology of China), Wenbo Ma(Shanghai Jiao Tong University), Yugang Ma(Fudan University), Yajun Mao(Peking University), Yue Meng(Shanghai Jiao Tong University), Xuyang Ning(Shanghai Jiao Tong University), Binyu Pang(Shandong University), Ningchun Qi, Zhicheng Qian(Shanghai Jiao Tong University), Xiangxiang Ren(Shandong University), Dong Shan(Nankai University), Xiaofeng Shang(Shanghai Jiao Tong University), Xiyuan Shao(Nankai University), Guofang Shen(Beihang University), Manbin Shen, Wenliang Sun, Yi Tao(Shanghai Jiao Tong University), Anqing Wang(Shandong University), Guanbo Wang(Shanghai Jiao Tong University), Hao Wang(Shanghai Jiao Tong University), Jiamin Wang(Shanghai Jiao Tong University), Lei Wang(Chengdu University of Technology), Meng Wang(Shandong University), Qiuhong Wang(Fudan University), Shaobo Wang(Shanghai Jiao Tong University), Siguang Wang(Shanghai Jiao Tong University), Wei Wang, Xiuli Wang(Shanghai Jiao Tong University), Xuming Wang(Shanghai Jiao Tong University), Zhou Wang(Shanghai Jiao Tong University), Yuehuan Wei, Weihao Wu(Shanghai Jiao Tong University), Yuan Wu(Shanghai Jiao Tong University), Mengjiao Xiao(Shanghai Jiao Tong University), Xiang Xiao, Kaizhi Xiong, Yifan Xu(Shanghai Jiao Tong University), Shunyu Yao(Shanghai Jiao Tong University), Binbin Yan(Shanghai Jiao Tong University), Xiyu Yan, Yong Yang(Shanghai Jiao Tong University), Peihua Ye(Shanghai Jiao Tong University), Chunxu Yu(Nankai University), Ying Yuan(Shanghai Jiao Tong University), Zhe Yuan(Fudan University), Youhui Yun(Shanghai Jiao Tong University), Xinning Zeng(Shanghai Jiao Tong University), Minzhen Zhang(Shanghai Jiao Tong University), Peng Zhang, Shibo Zhang(Shanghai Jiao Tong University), Shu Zhang(Shanghai Jiao Tong University), Tao Zhang(Shanghai Jiao Tong University), Wei Zhang(Shanghai Jiao Tong University), Yang Zhang(Shandong University), Yingxin Zhang(Shandong University), Yuanyuan Zhang(Shandong University), Zhao Li(Shanghai Jiao Tong University), Jifang Zhou(Shanghai Jiao Tong University), Jiaxu Zhou(Shanghai Jiao Tong University), Jiayi Zhou(Shanghai Jiao Tong University), Ning Zhou(Shanghai Jiao Tong University), Xiaopeng Zhou(Beihang University), Yubo Zhou(Shanghai Jiao Tong University), Zhizhen Zhou(Shanghai Jiao Tong University)
Cited by 86Open Access
Abstract
In this Letter, we report the dark matter search results from the commissioning run (Run0) and the first science run (Run1) of the PandaX-4T experiment. The two datasets were processed with a unified procedure, with the Run1 data treated blindly. The data processing is improved compared to previous work, unifying the low-level signal reconstruction in a wide energy range up to 120 keV. With a total exposure of 1.54 tonne·year, no significant excess of nuclear recoil events is found. The lowest 90% confidence level exclusion on the spin-independent cross section is 1.6×10^{-47} cm^{2} at a dark matter mass of 40 GeV/c^{2}. Our results represent the most stringent constraint for a dark matter mass above 100 GeV/c^{2}.
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