Seminar detail: Electroweak baryogenesis in the aligned two Higgs doublet model

Date&Time	Mon May 15 2023 (14:45 - 15:45)
Speaker	Shinya Kanemura
Affiliation	Osaka Univ.
Title	Electroweak baryogenesis in the aligned two Higgs doublet model
Abstract	The Higgs sector is an unfinished part of the standard Model (SM). Its deep understanding leads to the explanation of phenomena that cannot be explained in the SM. In this seminar, we discuss a viable scenario of the electroweak baryogenesis, where the physics of extended Higgs sectors plays an essential role. Extended Higgs models are constrained strongly by current LHC data and also EDM data. We focus on the aligned two Higgs doublet model, in which baryon asymmetry of the Universe is explained without contradicting such current data. In this model, the lightest Higgs boson, which corresponds to the discovered Higgs boson, behaves like the SM Higgs boson at the tree level, and there are order 1 CP violation phases in the Higgs potential and the Yukawa interaction with respect to the additional Higgs states. The baryon asymmetry is evaluated by top and top-charm charge transport scenarios in the WKB method, and viable benchmark parameter sets to explain the observed value are found. We also discuss the testability of our scenarios using future experiments such as HL-LHC, ILC, EDM, flavor experiments including B and K mesons, and space based gravitational interferometers.
Remarks
Slide/Video	video1