학술논문
Searching for Two-Neutrino and Neutrinoless Double Beta Decay of $^{134}$Xe with the PandaX-4T Experiment
Document Type
Working Paper
Author
PandaX Collaboration; Yan, Xiyu; Cheng, Zhaokan; Abdukerim, Abdusalam; Bo, Zihao; Chen, Wei; Chen, Xun; Cheng, Chen; Cui, Xiangyi; Fan, Yingjie; Fang, Deqing; Fu, Changbo; Fu, Mengting; Geng, Lisheng; Giboni, Karl; Gu, Linhui; Guo, Xuyuan; Han, Chencheng; Han, Ke; He, Changda; He, Jinrong; Huang, Di; Huang, Yanlin; Huang, Junting; Huang, Zhou; Hou, Ruquan; Hou, Yu; Ji, Xiangdong; Ju, Yonglin; Li, Chenxiang; Li, Jiafu; Li, Mingchuan; Li, Shuaijie; Li, Tao; Lin, Qing; Liu, Jianglai; Lu, Xiaoying; Lu, Congcong; Luo, Lingyin; Luo, Yunyang; Ma, Wenbo; Ma, Yugang; Mao, Yajun; Meng, Yue; Ning, Xuyang; Pang, Binyu; Qi, Ningchun; Qian, Zhicheng; Ren, Xiangxiang; Shaheed, Nasir; Shang, Xiaofeng; Shao, Xiyuan; Shen, Guofang; Si, Lin; Sun, Wenliang; Tan, Andi; Tao, Yi; Wang, Anqing; Wang, Meng; Wang, Qiuhong; Wang, Shaobo; Wang, Siguang; Wang, Wei; Wang, Xiuli; Wang, Zhou; Wei, Yuehuan; Wu, Mengmeng; Wu, Weihao; Xia, Jingkai; Xiao, Mengjiao; Xiao, Xiang; Xie, Pengwei; Yan, Binbin; Yang, Jijun; Yang, Yong; Yao, Yukun; Yu, Chunxu; Yuan, Ying; Yuan, Zhe; Zeng, Xinning; Zhang, Dan; Zhang, Minzhen; Zhang, Peng; Zhang, Shibo; Zhang, Shu; Zhang, Tao; Zhang, Wei; Zhang, Yang; Zhang, Yingxin; Zhang, Yuanyuan; Zhao, Li; Zheng, Qibin; Zhou, Jifang; Zhou, Ning; Zhou, Xiaopeng; Zhou, Yong; Zhou, Yubo
Source
Phys.Rev.Lett. 132 (2024) 15, 152502
Subject
Language
Abstract
$^{134}$Xe is a candidate isotope for neutrinoless double beta decay~($0\nu\beta\beta$) search. In addition, the two-neutrino case ($2\nu\beta\beta$) allowed by the Standard Model of particle physics has not yet been observed. Utilizing the 10.4% of $^{134}$Xe in the natural xenon in the PandaX-4T detector and its first 94.9-day exposure, we have established the most stringent constraints on $2\nu\beta\beta$ and $0\nu\beta\beta$ of $^{134}$Xe half-lives, with limits of $2.8\times10^{22}$ yr and $3.0\times10^{23}$ yr at 90% confidence level, respectively. The $2\nu\beta\beta$ ($0\nu\beta\beta$) limit surpasses the previously reported best result by a factor of 32 (2.7), highlighting the potential of large monolithic natural xenon detectors.