{"paper":{"title":"Precise Measurement of $^{216}$Po Half-life with Exact Parent-daughter Pairing in PandaX-4T","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"nucl-ex","authors_text":"Anqing Wang, Binbin Yan, Binyu Pang, Changda He, Chen Cheng, Chencheng Han, Chenhui Zhu, Chunxu Yu, Congcong Lu, Deqing Fang, Guanbo Wang, Guofang Shen, Hao Wang, Haoyu Wang, Houqi Huang, Jiafu Li, Jiamin Wang, Jianglai Liu, Jianqin Xu, Jiaxu Zhou, Jiayi Zhou, Jifang Zhou, Jinrong He, Junting Huang, Kaizhi Xiong, Kangkang Zhao, Karl Giboni, Ke Han, Lei Wang, Lingyin Luo, Lisheng Geng, Li Zhao, Manbin Shen, Manna Deng, Mengjiao Xiao, Meng Wang, Mingchuan Li, Minzhen Zhang, Ningchun Qi, Ning Zhou, PandaX Collaboration: Chenxiang Li, Peihua Ye, Peiyuan Li, Peng Zhang, Qing Lin, Qiuhong Wang, Ruquan Hou, Shaobo Wang, Shibo Wang, Shibo Zhang, Shuaijie Li, Shunyu Yao, Shu Zhang, Siguang Wang, Siyuan Zhang, Tao Li, Tao Zhang, Wei Chen, Weihao Wu, Wei Wang, Wei Zhang, Wenliang Sun, Xiangdong Ji, Xiangxiang Ren Dong Shan, Xiang Xiao, Xiangyi Cui, Xiaofeng Shang, Xiaopeng Zhou, Xiaorun Lan, Xiaoying Lu, Xinning Zeng, Xiyuan Shao, Xiyu Yan, Xuanye Fu, Xunan Guo, Xun Chen, Xu Wang, Xuyan Sun, Xuyuan Guo, Yajun Mao, Yangdong Li, Yang Zhang, Yifan Xu, Yingjie Fan, Yingxin Zhang, Ying Yuan, Yi Tao, Yonglin Ju, Yong Yang, Youhui Yun, Yuanchun Liu, Yuan Wu, Yuanyuan Zhang, Yuehuan Wei, Yue Meng, Yueqiang Tian, Yugang Ma, Yujie Ge, Yule Huang, Yunhua Chen, Yunyang Luo, Yuxin Tian, Zhe Yuan, Zhicheng Qian, Zhixing Gao, Zhiyuan Li, Zhizhen Zhou, Zhou Wang, Zichao Guo, Zihao Bo","submitted_at":"2025-07-17T15:50:52Z","abstract_excerpt":"We report a precise measurement of $^{216}\\rm Po$ half-life using the PandaX-4T liquid xenon time projection chamber (TPC). $^{220}\\rm Rn $, emanating from a $^{228}\\rm Th $ calibration source, is injected to the detector and undergoes successive $\\alpha$ decays, first to $^{216}\\rm Po$ and then to $^{212}\\rm Pb$. PandaX-4T detector measures the 5-dimensional (5D) information of each decay, including time, energy, and 3-dimensional positions. Therefore, we can identify the $^{220}\\rm Rn $ and $^{216}\\rm Po$ decay events and pair them exactly to extract the lifetime of each $^{216}\\rm Po$. With"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.13241","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.13241/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}