Abstract:
Although the Higgs boson was found long time ago, the structure of the Higgs sector remains unknown. While the current data are consistent with the SM under theoretical and experimental uncertainty, there is still room for non-minimal Higgs sectors. Such non-minimal Higgs sectors can show various interesting aspects and properties which the SM Higgs sector does not have, These properties may help us explain the BSM phenomena and understand the direction of new paradigm beyond the standard model. Therefore, the Higgs sector is a probe of new physics. In order to explore the Higgs sector, future precision measurements of the Higgs boson observables are definitely important. These can be used to fingerprint various models with extended Higgs sectors, even if additional particles are not directly discovered. In this talk, we discuss how we may be able to extract information of the Higgs sector by using the future precision data, calculating radiative corrections to the Higgs boson observables. Starting from basics of the new physics effect on the quantum corrections to low energy observables, we consider one-loop effects of additional Higgs bosons on the Higgs boson couplings in the modified on-shell scheme in models with various extended Higgs sectors such as the SM extension of an additional singlet, doublet or triplet scalar field. We then numerically show how we may be able to separate these models by detecting a pattern of deviations from the SM prediction in these quantities.
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/XPHnbGUx2Iwg
Meeting ID: 369333859
Passcode: 584552