https://doi.org/10.1140/epjc/s10052-022-10926-5
Regular Article - Experimental Physics
Probing Higgs CP properties at the CEPC in the 
using optimal variables
1
Institute of High Energy Physics, Chinese Academy of Science (CAS), 19B, Yuquan Road, Shijing Shan District, 100049, Beijing, China
2
University of Chinese Academy of Science (UCAS), 19A, Yuquan Road, Shijing Shan District, 100049, Beijing, China
3
Department of Physics and Center for Field Theory and Particle Physics, Fudan University, 200438, Shanghai, China
4
Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Fudan University, 200433, Shanghai, China
5
University of Texas at Dallas, 75080-3021, Richardson, TX, USA
Received:
2
August
2022
Accepted:
15
October
2022
Published online:
1
November
2022
In the Circular Electron Positron Collider (CEPC), a measurement of the Higgs CP mixing through 
process is presented, with 
collision data at the center-of-mass energy of 
. In this study, the CP-violating parameter 
is constrained between the region of 
and 0.27 and 
between 
and 0.06 at 
confidence level. This study demonstrates the great potential of probing Higgs CP properties at the CEPC.
The original online version of this article was revised. Affiliation 1 has been corrected to “Institute of High Energy Physics, Chinese Academy of Science (CAS), 19B, Yuquan Road, Shijing Shan District, Beijing 100049, China”. Affiliation 2 was missing: “University of Chinese Academy of Science(UCAS), 19A, Yuquan Road, Shijing Shan District, Beijing 100049, China”. The authors Qiyu Sha, Abdualazem Fadol, Fangyi Guo, Yaquan Fang and Xinchou Lou are affiliated to the newly included 2nd affiliation.
An erratum to this article is available online at https://doi.org/10.1140/epjc/s10052-023-11208-4.
Copyright comment corrected publication 2023
© The Author(s) 2022. corrected publication 2023
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