Search for Double Beta Decay of $^{136}$Xe to the $0^+_1$ Excited State of $^{136}$Ba with PandaX-4T
Search for Double Beta Decay of $^{136}$Xe to the $0^+_1$ Excited State of $^{136}$Ba with PandaX-4T
We perform a search of double beta decay of $^{136}$Xe to the excited state, $0^+_1$, of $^{136}$Ba (2$\nu \beta \beta$-0$_1^+$), using the dual-phase xenon detector of PandaX-4T with the first 94.9-day commissioning data. The multi-site events are reconstructed up to the MeV energy scale, which helps to improve the background model significantly. The background contribution from the stainless steel platform outside PandaX-4T cryostat is evaluated for the first time. No significant evidence for 2$\nu \beta \beta$-$0_1^+$ is observed, resulting in a lower limit on half-life of $7.5 \times 10^{22}$ yr at the 90% confidence level. This is the first experimental limit on such a rare decay in a natural xenon-based detector.
Zhou Wang、Peng Zhang、Mingchuan Li、Yingxin Zhang、Jifang Zhou、Shaobo Wang、Xiangxiang Ren、Tao Li、Ruquan Hou、Hao Wang、Zhizhen Zhou、Di Huang、Xuyang Ning、Chenxiang Li、Yuehuan Wei、Kaizhi Xiong、Dong Shan、Yubo Zhou、Yugang Ma、Zhe Yuan、Yang Zhang、Congcong Lu、Shibo Zhang、Peihua Ye、Houqi Huang、Li Zhao、Jiaxu Zhou、Xiangpan Ji、Yuan Wu、Binyu Pang、Chunxu Yu、Lisheng Geng、Jinrong He、Siguang Wang、Yi Tao、Mengjiao Xiao、Zhicheng Qian、Wenliang Sun、Yajun Mao、Lingyin Luo、Jiafu Li、Xiang Xiao、Xunan Guo、Xiuli Wang、Xu Wang、Yifan Xu、Wei Zhang、Meng Wang、Guofang Shen、Lei Wang、Ke Han、Xuyuan Guo、Xiangdong Ji、Qing Lin、Zichao Guo、Wenbo Ma、Shunyu Yao、Zhiyuan Li、Guanbo Wang、Ning Zhou、Yong Yang、PandaX Collaboration、Yue Meng、Xiyu Yan、Xinning Zeng、Deqing Fang、Binbin Yan、Changda He、Jianglai Liu、Wei Wang、Ningchun Qi、Zihao Bo、Zhixing Gao、Xiaofeng Shang、Xun Chen、Shuaijie Li、Yunhua Chen、Tao Zhang、Xiaoying Lu、Manbin Shen、Yunyang Luo、Xiyuan Shao、Yuanyuan Zhang、Youhui Yun、Xiaopeng Zhou、Weihao Wu、Jiamin Wang、Qiuhong Wang、Zhaokan Cheng、Ying Yuan、Shu Zhang、Minzhen Zhang、Junting Huang、Karl Giboni、Yingji Fang、Chencheng Han、Xiangyi Cui、Wei Chen、Yonglin Ju、Yu Hou、Anqing Wang
物理学
Zhou Wang,Peng Zhang,Mingchuan Li,Yingxin Zhang,Jifang Zhou,Shaobo Wang,Xiangxiang Ren,Tao Li,Ruquan Hou,Hao Wang,Zhizhen Zhou,Di Huang,Xuyang Ning,Chenxiang Li,Yuehuan Wei,Kaizhi Xiong,Dong Shan,Yubo Zhou,Yugang Ma,Zhe Yuan,Yang Zhang,Congcong Lu,Shibo Zhang,Peihua Ye,Houqi Huang,Li Zhao,Jiaxu Zhou,Xiangpan Ji,Yuan Wu,Binyu Pang,Chunxu Yu,Lisheng Geng,Jinrong He,Siguang Wang,Yi Tao,Mengjiao Xiao,Zhicheng Qian,Wenliang Sun,Yajun Mao,Lingyin Luo,Jiafu Li,Xiang Xiao,Xunan Guo,Xiuli Wang,Xu Wang,Yifan Xu,Wei Zhang,Meng Wang,Guofang Shen,Lei Wang,Ke Han,Xuyuan Guo,Xiangdong Ji,Qing Lin,Zichao Guo,Wenbo Ma,Shunyu Yao,Zhiyuan Li,Guanbo Wang,Ning Zhou,Yong Yang,PandaX Collaboration,Yue Meng,Xiyu Yan,Xinning Zeng,Deqing Fang,Binbin Yan,Changda He,Jianglai Liu,Wei Wang,Ningchun Qi,Zihao Bo,Zhixing Gao,Xiaofeng Shang,Xun Chen,Shuaijie Li,Yunhua Chen,Tao Zhang,Xiaoying Lu,Manbin Shen,Yunyang Luo,Xiyuan Shao,Yuanyuan Zhang,Youhui Yun,Xiaopeng Zhou,Weihao Wu,Jiamin Wang,Qiuhong Wang,Zhaokan Cheng,Ying Yuan,Shu Zhang,Minzhen Zhang,Junting Huang,Karl Giboni,Yingji Fang,Chencheng Han,Xiangyi Cui,Wei Chen,Yonglin Ju,Yu Hou,Anqing Wang.Search for Double Beta Decay of $^{136}$Xe to the $0^+_1$ Excited State of $^{136}$Ba with PandaX-4T[EB/OL].(2025-02-05)[2025-05-26].https://arxiv.org/abs/2502.03017.点此复制
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