Abstract:
In spite of success of the standard model, there are still problems that cannot be explained in the SM, such as tiny neutrino mass, dark matter and baryon asymmetry of the universe. We first discuss viable scenarios of electroweak baryogenesis in the framework of two Higgs doublet models in which strong constraints from electron EDM can be avoided with/without cancellation of leading Barr-Zee diagrams. We then discuss a scenario of a TeV scale model with an extended Higgs sector, where tiny neutrino masses, dark matter and baryon asymmetry of the universe can be explained simultaneously by the TeV scale physics. Tiny neutrino mass can be explained by the three loop quantum effect with a discrete Z2 parity, which also stabilizes the dark matter, and baryon asymmetry can be explained by electroweak baryogenesis. Models along with this scenario show rich phenomenology, so that they can be tested at current and future experiments for EDMs, LFV, collider, gravitational waves etc. Finally, we also discuss a UV model of these TeV scale phenomenological models where extended Higgs sectors are introduced in an ad hoc way.
Biography :
Shinya Kanemura is a professor at the University of Osaka, Japan. After getting Ph. D at the University of Osaka in 1996, he worked as a JSPS fellow at the KEK Theory Group, as a Humboldt fellow at Karlsruhe Institute of Technology, and as a research associate at Michigan State University. He then moved back to Osaka as an assistant professor, and became an associate professor at the University of Toyama. Finally, he again went back to the University of Osaka as a full professor. Shinya Kanemura’s main research field is particle phenomenology. In particular, he has been interested in the nature of the (non-minimal) Higgs sector, especially its relation to new physics beyond the standard model. He also has investigated new models for explaining tiny neutrino mass, dark matter and/or baryon asymmetry of the Universe and their phenomenology.
Online link: https://meeting.tencent.com/dm/L7R3qvMV9xJN
Meeting ID: 166853082
Passcode: 586942