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 pole, the expected production of 4 Tera bosons will provide unique and highly precise measurements of boson couplings, while the substantial number of boosted heavy-flavored quarks and leptons produced in clean 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 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 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.
Cite
@article{arxiv.2412.19743,
title = {Flavor Physics at the CEPC: a General Perspective},
author = {Xiaocong Ai and Wolfgang Altmannshofer and Peter Athron and Xiaozhi Bai and Lorenzo Calibbi and Lu Cao and Yuzhi Che and Chunhui Chen and Ji-Yuan Chen and Long Chen and Mingshui Chen and Shanzhen Chen and Xuan Chen and Shan Cheng and Cheng-Wei Chiang and Andreas Crivellin and Hanhua Cui and Olivier Deschamps and Sébastien Descotes-Genon and Xiaokang Du and Shuangshi Fang and Yu Gao and Yuanning Gao and Li-Sheng Geng and Pablo Goldenzweig and Jiayin Gu and Feng-Kun Guo and Yuchen Guo and Zhi-Hui Guo and Tao Han and Hong-Jian He and Jibo He and Miao He and Xiaogang He and Yanping Huang and Gino Isidori and Quan Ji and Jianfeng Jiang and Xu-Hui Jiang and Jernej F. Kamenik and Tsz Hong Kwok and Gang Li and Geng Li and Haibo Li and Haitao Li and Hengne Li and Honglei Li and Liang Li and Lingfeng Li and Qiang Li and Qiang Li and Shu Li and Xiaomei Li and Xin-Qiang Li and Yiming Li and Yubo Li and Yuji Li and Zhao Li and Hao Liang and Zhijun Liang and Libo Liao and Zoltan Ligeti and Jia Liu and Jianbei Liu and Tao Liu and Yi Liu and Yong Liu and Zhen Liu and Xinchou Lou and Peng-Cheng Lu and Alberto Lusiani and Hong-Hao Ma and Kai Ma and Farvah Mahmoudi and Yajun Mao and Yaxian Mao and David Marzocca and Juan-Juan Niu and Soeren Prell and Huirong Qi and Sen Qian and Zhuoni Qian and Qin Qin and Ariel Rock and Jonathan L. Rosner and Manqi Ruan and Dingyu Shao and Chengping Shen and Xiaoyan Shen and Haoyu Shi and Liaoshan Shi and Zong-Guo Si and Cristian Sierra and Huayang Song and Shufang Su and Wei Su and Zhijia Sun and Michele Tammaro and Dayong Wang and En Wang and Fei Wang and Hengyu Wang and Jian Wang and Jianchun Wang and Kun Wang and Lian-Tao Wang and Wei Wang and Xiaolong Wang and Xiaoping Wang and Yadi Wang and Yifang Wang and Yuexin Wang and Xing-Gang Wu and Yongcheng Wu and Rui-Qing Xiao and Ke-Pan Xie and Yuehong Xie and Zijun Xu and Haijun Yang and Hongtao Yang and Lin Yang and Shuo Yang and Zhongbao Yin and Fusheng Yu and Changzheng Yuan and Xing-Bo Yuan and Xuhao Yuan and Chongxing Yue and Xi-Jie Zhan and Hong-Hao Zhang and Kaili Zhang and Liming Zhang and Xiaoming Zhang and Yang Zhang and Yanxi Zhang and Ying Zhang and Yongchao Zhang and Yu Zhang and Zhen-Hua Zhang and Zhong Zhang and Mingrui Zhao and Qiang Zhao and Xu-Chang Zheng and Yangheng Zheng and Chen Zhou and Daicui Zhou and Pengxuan Zhu and Yongfeng Zhu and Xuai Zhuang and Xunwu Zuo and Jure Zupan},
journal= {arXiv preprint arXiv:2412.19743},
year = {2025}
}