Flavor physics at the CEPC: a general perspective*

Abstract We discuss the landscape of flavor physics at the Circular Electron-Positron Collider (CEPC), based on the nominal luminosity outlined in its Technical Design Report. The CEPC is designed to operate in multiple modes to address a variety of tasks. At the Z pole, the expected production of 4 Tera Z bosons will provide unique and highly precise measurements of Z boson couplings, while the substantial number of boosted heavy-flavored quarks and leptons produced in clean Z decays will facilitate investigations into their flavor physics with unprecedented precision. We investigate the prospects of measuring various physics benchmarks and discuss their implications for particle theories and phenomenological models. Our studies indicate that, with its highlighted advantages and anticipated excellent detector performance, the CEPC can explore beauty and τ physics in ways that are superior to or complementary with the Belle II and Large-Hadron-Collider-beauty experiments, potentially enabling the detection of new physics at energy scales of 10 TeV and above. This potential also extends to the observation of yet-to-be-discovered rare and exotic processes, as well as testing fundamental principles such as lepton flavor universality, lepton and baryon number conservation, etc., making the CEPC a vibrant platform for flavor physics research. The WW threshold scan, Higgs-factory operation and top-pair productions of the CEPC further enhance its merits in this regard, especially for measuring the Cabibbo-Kobayashi-Maskawa matrix elements, and Flavor-Changing-Neutral-Current physics of Higgs boson and top quarks. We outline the requirements for detector performance and considerations for future development to achieve the anticipated scientific goals. The role of machine learning for innovative detector design and advanced reconstruction algorithms is also stressed. The CEPC flavor physics program not only develops new capabilities for exploring flavor physics beyond existing projects but also enriches the physics opportunities of this machine. It should be remarked that, given the richness of the CEPC flavor physics, this manuscript is not meant to be a comprehensive survey, but rather an investigation of representative cases. Uncovering the full potential of flavor physics at the CEPC will require further dedicated explorations in the future.

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Publication Details

Journal
Chinese Physics C
Published
2025-07-20
DOI
https://doi.org/10.1088/1674-1137/adf1f0
Citations
6
Primary Topic
Nuclear Physics and Applications
Type
article
Field-Weighted Citation Impact
11.30

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article

Flavor physics at the CEPC: a general perspective*

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6 citations
Chinese Physics C
Nuclear Physics and Applications
11.30
article

Flavor physics at the CEPC: a general perspective*

Xing-Gang Wu, Sébastien Descotes–Genon, Jure Zupan, Cristian Sierra, Xinchou 辛丑 Lou 娄, David Marzocca, Li‐Sheng Geng, Ariel Rock, Jernej F. Kamenik, Jonathan L. Rosner, Andreas Crivellin, Yongcheng Wu, P. Goldenzweig, Gino Isidori, Wolfgang Altmannshofer, Michele Tammaro, A. Lusiani, S. Prell, Zoltan Ligeti, Lorenzo Calibbi, Xiaolong 小龙 Wang 王, Manqi 曼奇 Ruan 阮, Daicui 代翠 Zhou 周, Sen 森 Qian 钱, Yangheng 阳恒 Zheng 郑, Xiaomei 笑梅 Li 李, Yajun 亚军 Mao 冒, Yifang 贻芳 Wang 王, Miao 苗 He 何, Haitao 海涛 Li 李, En 恩 Wang 王, Hao 浩 Liang 梁, Kun Wang, Gang Li, Z. Yu, F. Mahmoudi, Qiang 强 Li 李, Wei 伟 Wang 王, O. Deschamps, Xu-Chang 绪昌 Zheng 郑, Jian 健 Wang 王, Yuzhi 逾之 Che 车, Yanping 燕萍 Huang 黄, Zong-Guo 宗国 Si 司, Long 龙 Chen 陈, Fei 飞 Wang 王, Hengyu 恒宇 Wang 汪, Jianchun 建春 Wang 王, Lian-Tao 连涛 Wang 王, Xiaoping 小平 Wang 王, Mingshui 明水 Chen 陈, Yadi 雅迪 Wang 王, Yuexin 悦心 Wang 王, Rui-Qing 瑞卿 Xiao 肖, Ke-Pan 柯盼 Xie 谢, Yuehong 跃红 Xie 谢, Zijun 子骏 Xu 徐, Haijun 海军 Yang 杨, Shanzhen 缮真 Chen 陈, Hongtao 洪洮 Yang 杨, Lin 林 Yang 杨, Shuo 硕 Yang 杨, Zhongbao 中宝 Yin 殷, Fusheng 福升 Yu 于, Changzheng 长征 Yuan 苑, Xing-Bo 兴博 Yuan 袁, Xuhao 煦昊 Yuan 袁, Chongxing 崇兴 Yue 岳, Xi-Jie 希杰 Zhan 展, Xuan 暄 Chen 陈, Hong-Hao 宏浩 Zhang 张, Kaili 凯栗 Zhang 张, Liming 黎明 Zhang 张, Xiaoming 晓明 Zhang 张, Yang 阳 Zhang 张, Yanxi 艳席 Zhang 张, Ying 盈 Zhang 张, Yongchao 永超 Zhang 张, Zhen-Hua 振华 Zhang 张, Shan 山 Cheng 程, Zhong 重 Zhang 张, Mingrui 明锐 Zhao 赵, Qiang 强 Zhao 赵, Chen 辰 Zhou 周, Pengxuan 鹏轩 Zhu 朱, Yongfeng 永峰 Zhu 朱, Xuai 胥爱 Zhuang 庄, Cheng-Wei 正偉 Chiang 蔣, Xunwu 训午 Zuo 左, Hanhua 瀚化 Cui 崔, Xiaokang 小康 Du 都, Shuangshi 双世 Fang 房, Yu 宇 Gao 高, Yuanning 原宁 Gao 高, Jiayin 嘉荫 Gu 顾, Feng-Kun 奉坤 Guo 郭, Yuchen 禹辰 Guo 郭, Zhi-Hui 志辉 Guo 郭, Tao 涛 Han 韩, Hong-Jian 红建 He 何, Jibo 吉波 He 何, Xiaogang 小刚 He 何, Quan 全 Ji 纪, Jianfeng 建锋 Jiang 江, Xu-Hui 旭辉 Jiang 蒋, Xiaozhi 晓智 Bai 白, Tsz Hong 子康 Kwok 郭, Geng 更 Li 李, Haibo 海波 Li 李, Hengne 衡讷 Li 李, Honglei 洪蕾 Li 李, Liang 亮 Li 李, Lingfeng 凌风 Li 李, Shu 数 Li 李, Xin-Qiang 新强 Li 李, Yiming 一鸣 Li 李, Yubo 郁博 Li 李, Yuji 玉己 Li 李, Zhao 钊 Li 李, Lu 璐 Cao 曹, Zhijun 志均 Liang 梁, Libo 立波 Liao 廖, Jia 佳 Liu 刘, Jianbei 建北 Liu 刘, Tao 滔 Liu 刘, Yi 义 Liu 刘, Yong 勇 Liu 刘, Zhen 真 Liu 刘, Peng-Cheng 鹏程 Lu 路, Hong-Hao 鸿浩 Ma 马, Kai 凯 Ma 马, Yaxian 亚显 Mao 毛, Juan-Juan 娟娟 Niu 牛, Chunhui 春晖 Chen 陈, Huirong 辉荣 Qi 祁, Zhuoni 卓妮 Qian 钱, Qin 溱 Qin 秦, Dingyu 鼎煜 Shao 邵, Chengping 成平 Shen 沈, Xiaoyan 肖雁 Shen 沈, Ji-Yuan 纪元 Chen 陈, Haoyu 澔玙 Shi 石, Liaoshan 辽珊 Shi 石, Huayang 华洋 Song 宋, Shufang 淑芳 Su 苏, Wei 伟 Su 苏, Zhijia 志嘉 Sun 孙, Dayong 大勇 Wang 王
article en
6 citations

Abstract

Abstract We discuss the landscape of flavor physics at the Circular Electron-Positron Collider (CEPC), based on the nominal luminosity outlined in its Technical Design Report. The CEPC is designed to operate in multiple modes to address a variety of tasks. At the Z pole, the expected production of 4 Tera Z bosons will provide unique and highly precise measurements of Z boson couplings, while the substantial number of boosted heavy-flavored quarks and leptons produced in clean Z decays will facilitate investigations into their flavor physics with unprecedented precision. We investigate the prospects of measuring various physics benchmarks and discuss their implications for particle theories and phenomenological models. Our studies indicate that, with its highlighted advantages and anticipated excellent detector performance, the CEPC can explore beauty and τ physics in ways that are superior to or complementary with the Belle II and Large-Hadron-Collider-beauty experiments, potentially enabling the detection of new physics at energy scales of 10 TeV and above. This potential also extends to the observation of yet-to-be-discovered rare and exotic processes, as well as testing fundamental principles such as lepton flavor universality, lepton and baryon number conservation, etc., making the CEPC a vibrant platform for flavor physics research. The WW threshold scan, Higgs-factory operation and top-pair productions of the CEPC further enhance its merits in this regard, especially for measuring the Cabibbo-Kobayashi-Maskawa matrix elements, and Flavor-Changing-Neutral-Current physics of Higgs boson and top quarks. We outline the requirements for detector performance and considerations for future development to achieve the anticipated scientific goals. The role of machine learning for innovative detector design and advanced reconstruction algorithms is also stressed. The CEPC flavor physics program not only develops new capabilities for exploring flavor physics beyond existing projects but also enriches the physics opportunities of this machine. It should be remarked that, given the richness of the CEPC flavor physics, this manuscript is not meant to be a comprehensive survey, but rather an investigation of representative cases. Uncovering the full potential of flavor physics at the CEPC will require further dedicated explorations in the future.

Chinese Physics CVol. 49(10)
Université Claude Bernard Lyon 1 (FR), Karlsruhe Institute of Technology (DE), Centre National de la Recherche Scientifique (FR), Fermi National Accelerator Laboratory (US), Scuola Internazionale Superiore di Studi Avanzati (IT), University of Trieste (IT), Lawrence Berkeley National Laboratory (US), Nanjing Normal University (CN), University of Ljubljana (SI), Scuola Normale Superiore (IT), Iowa State University (US), University of California, Santa Cruz (US), Institut Universitaire de France (FR), Hong Kong University of Science and Technology (HK), University of Zurich (CH), Nankai University (CN), Université Paris-Saclay (FR), Paul Scherrer Institute (CH), Jožef Stefan Institute (SI), University of Chicago (US), Institut de Physique (FR), Hong Kong Jockey Club (HK), University of Clermont Auvergne (FR), Institute of Theoretical Physics (CN), Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (IT), Institut National de Physique Nucléaire et de Physique des Particules (FR), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR), Clermont Université (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT), Institut de Physique des 2 Infinis de Lyon (FR), University of Cincinnati (US), European Organization for Nuclear Research (CH)
National Natural Science Foundation of China
Openalex Percentile: Top 1%
Nuclear Physics and Applications
11.30
DOIOpen Access PDFOpenAlex
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