[2025-01-18] For better promotion of the events, the categories in this system will be adjusted. For details, please refer to the announcement of this system. The link is https://indico-tdli.sjtu.edu.cn/news/1-warm-reminder-on-adjusting-indico-tdli-categories-indico

24–26 Sept 2025
Tsung-Dao Lee Institute
Asia/Shanghai timezone

Higgs hadronic decay at CEPC

26 Sept 2025, 14:20
20m
Tsung-Dao Lee Institute

Tsung-Dao Lee Institute

Speaker

Xinzhu Wang (上海交通大学)

Description

We conduct a detailed Monte Carlo study of the process e⁺e⁻ → ZH at the CEPC. The analysis focuses on final states where the Z boson decays either invisibly or into charged leptons, while the Higgs boson decays hadronically through H → bb̄, cc̄, gg and ss̄. To distinguish among hadronic final states, we apply advanced jet-tagging methods based on ParticleNet, Particle Transformer, and the More-Interaction Particle Transformer, which make use of low-level particle information for more accurate classification. In addition, we develop a machine-learning-based event selection strategy to strengthen signal–background separation, leading to improved sensitivity in Higgs property measurements and stringent tests of Standard Model predictions at the CEPC.

Session Selection Particle and Nuclear Physics

Primary authors

Xinzhu Wang (上海交通大学) Mr Chunxiang Zhu (上海交通大学) Dr Yifan Zhu (上海交通大学) Dr Kun Wang (上海理工大学) Prof. Haijun Yang (上海交通大学)

Presentation materials