Dark Matter Search Results from 1.54 Tonne$\cdot$Year Exposure of PandaX-4T

• DOI: 10.48550/arxiv.2408.00664
• Publication Date: 2024-08-01
• Authors: PandaX Collaboration; Zihao Bo; Wei Chen; Xun Chen; Yunhua Chen; Zhaokan Cheng; Xiangyi Cui; Yingjie Fan; Deqing Fang; Zhixing Gao; Li-Sheng Geng; Karl Giboni; Xunan Guo; Xuyuan Guo; Zichao Guo; Chencheng Han; K. Han; Changda He; Jinrong He; Di Huang; Houqi Huang; J. Huang; Ruquan Hou; Yu Hou; Xiangdong Ji; X. Ji; Yonglin Ju; Chenxiang Li; Jiafu Li; Mingchuan Li; Shuaijie Li; Tao Li; Zhiyuan Li; Qing Lin; Jianglai Liu; Congcong Lu; Xiaoying Lü; Lingyin Luo; Yunyang Luo; Wenbo Ma; Y. G.; Yajun Mao; Yue Meng; Xuyang Ning; Binyu Pang; Ningchun Qi; Zhicheng Qian; Xiangxiang Ren; Dong Shan; Xiaofeng Shang; Xiyuan Shao; Guofang Shen; Manbin Shen; Wenliang Sun; Yi Tao; Anqing Wang; Guanbo Wang; Hao Wang; Jiamin Wang; Lei Wang; Meng Wang; Qiuhong Wang; Shaobo Wang; Siguang Wang; Wei Wang; Xiuli Wang; Xuming Wang; Zhou Wang; Yuehuan Wei; Weihao Wu; Yuan Wu; Mengjiao Xiao; Xiang Xiao; Kaizhi Xiong; Yifan Xu; Shunyu Yao; Binbin Yan; Xiyu Yan; Yong Yang; Peihua Ye; Chunxu Yu; Ying Yuan; Zhe Yuan; Youhui Yun; Xinning Zeng; Minzhen Zhang; Peng Zhang; Shibo Zhang; Shu Zhang; Tao Zhang; Wei Zhang; Yang Zhang; Yingxin Zhang; Yuanyuan Zhang; Zhao Li; Jifang Zhou; Jiaxu Zhou; Jiayi Zhou; N. Zhou; Xiaopeng Zhou; Yubo Zhou; Zhizhen Zhou
• Keywords: Tonne

In this letter, we report the dark matter search results from commissioning run and first science of PandaX-4T experiment. A blind analysis is carried out on entire data set. The processing improved compared to previous work, unifying low-level signal reconstruction in a wide energy range up 120 keV. With total exposure 1.54 tonne$\cdot$year, no significant excess nuclear recoil events found. lowest 90% confidence level exclusion spin-independent cross section $1.6 \times 10^{-47} \mathrm{cm}^2$ at mass 40 GeV$/c^2$. Our represent most stringent constraint for above 100