Jul 16 – 26, 2022
US/Pacific timezone

Study of Electroweak Phase Transition in Exotic Higgs Decays at the CEPC

Jul 18, 2022, 7:00 PM
2h 20m
211 South Ballroom (HUB)

211 South Ballroom



Ke Li (University of Washington)


A strong first-order electroweak phase transition (SFOEWPT) is expected within BSM scenarios and can be induced by light new particles weakly coupled to the Higgs. At the future Circular Electron Positron Collider (CEPC), 1 million events of Higgs boson associated with a Z boson will be collected in a very clean environment and the sensitivity to probe the SFOEWPT for new scalar masses can be down to ~10GeV. In this poster we will present the search for exotic decays of the Higgs bosons into a pair of spin-zero particles using the simulated e+e- collision data with a luminosity of 5000/fb at sqrt(s)= 240 GeV. The expected sensitivity is significantly better than that can be achieved at the HL-LHC.

In-person or Virtual? In-person

Primary authors

Elham E Khoda (University of Washington) Ke Li (University of Washington) Michael Ramsey-Musolf (University of Massachusetts Amherst) Nikolaos Konstantinidis (University College London) Shih-Chieh Hsu (University of Washington) Shu LI (Tsung-Dao Lee Institute, Shanghai Jiao Tong Univ. (CN)) Yanda Wu Yuwen Zhang Zhen Wang (TDLI) xuliang zhu

Presentation materials