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arXiv · 2410.18817

Conceptual Design of the Muonium-to-Antimuonium Conversion Experiment (MACE)

Ai-Yu Bai·Hanjie Cai·Chang-Lin Chen·Siyuan Chen·Xurong Chen·Yu Chen·Weibin Cheng·Ling-Yun Dai·Rui-Rui Fan·Li Gong·Zihao Guo·Yuan He·Zhilong Hou·Yinyuan Huang·Huan Jia·Hao Jiang·Han-Tao Jing·Xiaoshen Kang·Hai-Bo Li·Jincheng Li·Yang Li·Daming Liu·Shulin Liu·Guihao Lu·Han Miao·Yunsong Ning·Jianwei Niu·Huaxing Peng·Alexey A. Petrov·Yuanshuai Qin·Mingchen Sun·Jian Tang·Jing-Yu Tang·Ye Tian·Rong Wang·Xiaodong Wang·Yi Wang·Zhichao Wang·Chen Wu·Tian-Yu Xing·Weizhi Xiong·Yu Xu·Baojun Yan·De-Liang Yao·Tao Yu·Ye Yuan·Yi Yuan·Yao Zhang·Yongchao Zhang·Zhilv Zhang·Guang Zhao·Shihan Zhao
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Abstract

The spontaneous conversion of muonium to antimuonium is one of the interesting charged lepton flavor violation phenomena offering a sensitive probe of potential new physics and serving as a tool to constrain the parameter space beyond the Standard Model. The Muonium-to-Antimuonium Conversion Experiment (MACE) is designed to utilize a high-intensity muon beam, a Michel electron magnetic spectrometer, a positron transport system, and a positron detection system, to either discover or constrain this rare process with a conversion probability of $\mathcal{O}(10^{-13})$. This article presents an overview of the theoretical framework as well as a detailed description of the experimental design for the search for muonium-to-antimuonium conversion.

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Ai-Yu Bai, Hanjie Cai, Chang-Lin Chen, Siyuan Chen, Xurong Chen, Yu Chen, Weibin Cheng, Ling-Yun Dai, Rui-Rui Fan, Li Gong, Zihao Guo, Yuan He, Zhilong Hou, Yinyuan Huang, Huan Jia, Hao Jiang, Han-Tao Jing, Xiaoshen Kang, Hai-Bo Li, Jincheng Li, Yang Li, Daming Liu, Shulin Liu, Guihao Lu, Han Miao, Yunsong Ning, Jianwei Niu, Huaxing Peng, Alexey A. Petrov, Yuanshuai Qin, Mingchen Sun, Jian Tang, Jing-Yu Tang, Ye Tian, Rong Wang, Xiaodong Wang, Yi Wang, Zhichao Wang, Chen Wu, Tian-Yu Xing, Weizhi Xiong, Yu Xu, Baojun Yan, De-Liang Yao, Tao Yu, Ye Yuan, Yi Yuan, Yao Zhang, Yongchao Zhang, Zhilv Zhang, Guang Zhao, Shihan Zhao. 2024-10-24. Conceptual Design of the Muonium-to-Antimuonium Conversion Experiment (MACE). https://doi.org/10.1007/s41365-025-01876-0

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