# Sensitivity study of anomalous HZZ couplings at future Higgs factory

• We study the sensitivity of constraining the model independent Higgs-Z-Z coupling based on effective theory up to dimension-6 operators at the future Higgs factory. Utilizing the current conceptual design parameters of the Circular Electron Positron Collider, we give the experimental limits for the model independent operators by the total Higgsstrahlung cross section and angular distribution of Z boson decay in the Higgs factory. Especially, we give very small sensitivity limit for the CP violation parameter $\tilde g$, which will be a clear window to test the Standard Model and look for New Physics signal.
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Hua-Dong Li, Cai-Dian Lü and Lian-You Shan. Sensitivity study of anomalous HZZ couplings at future Higgs factory[J]. Chinese Physics C. doi: 10.1088/1674-1137/43/10/103001
Hua-Dong Li, Cai-Dian Lü and Lian-You Shan. Sensitivity study of anomalous HZZ couplings at future Higgs factory[J]. Chinese Physics C.
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沈阳化工大学材料科学与工程学院 沈阳 110142

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## Sensitivity study of anomalous HZZ couplings at future Higgs factory

###### Corresponding author: Lian-You Shan, shanly@ihep.ac.cn
• 1. Institute of High Energy Physics, CAS, Beijing 100049, China
• 2. School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China

Abstract: We study the sensitivity of constraining the model independent Higgs-Z-Z coupling based on effective theory up to dimension-6 operators at the future Higgs factory. Utilizing the current conceptual design parameters of the Circular Electron Positron Collider, we give the experimental limits for the model independent operators by the total Higgsstrahlung cross section and angular distribution of Z boson decay in the Higgs factory. Especially, we give very small sensitivity limit for the CP violation parameter $\tilde g$, which will be a clear window to test the Standard Model and look for New Physics signal.

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