Theoretical Studies on Extended Higgs Sectors Towards Future Precision Measurements

This book investigates the physics of the discovered Higgs boson and additional Higgs bosons in the extended Higgs models which includes higher-order quantum corrections. While the 125 GeV Higgs boson was discovered, the structure of the Higgs sector is still a mystery. Since the Higgs sector determines the concrete realization of the Higgs mechanism, the study of its nature is one of the central interests in current and future high-energy physics.

The book begins with a review of the standard model and the two-Higgs doublet model, which is one of the representatives of the extended Higgs models. Subsequently, we discuss the studies of the two-Higgs doublet model at the lowest order of perturbation. Following the lowest-order analysis, we study the higher-order electroweak corrections in Higgs physics. After reviewing the renormalization procedure and the higher-order corrections in the decays of the discovered Higgs boson, we discuss the higher-order corrections in theHiggs strahlung process from an electron-positron collision, the decays of the additional charged and CP-odd Higgs bosons in the two-Higgs doublet model. From the series of these studies, it is found that the nature of the Higgs sector can be widely investigated by future collider experiments.

Provides a comprehensive review of the Higgs physics Includes in-depth discussions on the nature of additional Higgs bosons Highlights precision studies of discovered Higgs boson

Auteur
Masashi Aiko received a Ph.D. in theoretical physics from Osaka University, Japan, in 2022. He received JSPS Research Fellowships for Young Scientists (PD) and is currently a JSPS postdoc at High Energy Accelerator Research Organization (KEK) in Japan. He won the Student Presentation Award of the Physical Society of Japan in 2021.

Contenu
Chapter 1. Introduction and summary.- Chapter 2. Review of the standard model.- Chapter 3. Review of the extended Higgs models.- Chapter 4. Renormalization.- Chapter 5.One-loop calculations for decays of the SM-like Higgs boson. Chapter 6. Higgs strahlung process in electronpositron colliders.- Chapter 7. Synergy between direct searches at the LHC and precision tests at future lepton colliders.- Chapter 8. One-loop calculations for decays of the charged Higgs bosons.- Chapter 9. 9 One-loop calculations for decays of the CP-odd Higgs boson.- Chapter 10. Higgs alignment from the twisted custodial symmetry at higher energy.- Chapter 11. Conclusion and discussion.