Speaker
Description
Although the Higgs boson has been discovered, the couplings between the Higgs boson and Standard Model (SM) particles may deviate from the predictions of the SM. Such deviations can be realized by extending the SM. One possible extension involves the introduction of an extended Higgs model, which extends the Higgs sector. Among extended Higgs models, the nearly aligned Higgs model, characterized by a single classical field, features a Higgs potential whose shape varies depending on the specific model. Classifying models based on the shape of their Higgs potentials provides an effective method for scrutinizing multiple models through high-precision measurements of the trilinear Higgs coupling.
In this study, we calculate the trilinear Higgs coupling, including one-loop corrections from the top quark and new particles, for several representative models. The parameters of these models, derived from the trilinear Higgs couplings, are constrained by expected measurements such as the High-Luminosity LHC and the International Linear Collider. This presentation reports on results from work in progress.
