2022/03/14 by Božović-Jelisavucić, I., Vukausinović, N., Jeans, D.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2203.06819
The violation of CP symmetry at the electro-weak scale is one of the essential ingredients for electro-weak baryogenesis. It is therefore of great interest to map the CP properties of the Higgs sector in as much detail as possible. A linear electron-positron Higgs factory collider will provide many opportunities to probe the CP nature of the Higgs sector, thanks to access to several Higgs production processes at a wide range of centre-of-mass energies. In this paper we report on two studies based on full simulation of detector response and realistic reconstruction algorithms: 1) a study of h → ττ at ILC-250, in which mixing of CP eigenstates can be measured to a precision of 75~mrad; and 2) the current status of an ongoing study of the ZZ--fusion process at 1.4 TeV CLIC and 1 TeV ILC, for which we expect to achieve concrete results during the Snowmass study period.