Toward a predictive composite Higgs model : a dual approach in 5D
Abstract/Contents
- Abstract
- An interesting possibility of explaining the electroweak symmetry breaking is to consider the Higgs boson as a composite particle, i.e. a pseudo-Goldstone boson of a new strong dynamics. Although it is hard to make quantitative predictions under a strong interaction, we can use its dual description in 5D and compute physical observables. In this thesis, I introduce gauge-Higgs unification models in warped 5-dimensional space as a setting for composite Higgs models. Gauge bosons and fermions are in the bulk and the Higgs boson is identified with the 5th component of a gauge field. We formalize the computation of the Coleman-Weinberg potential of the Higgs field and present a simple, general formula. Using this tool, we consider a specific model with SO(5) × U (1) global symmetry and introduce a new fermion multiplet, which competes with the top quark and creates a little hierarchy characterized by a small parameter s = v/f . Using a Green's function method, we compute the properties of the model systematically as a power series in s. We discuss the constraints on this model from the measured value of the Higgs mass, the masses of top quark partners, and precision electroweak observables. Finally, we compute fermion pair creation cross sections in general SO(5) × U (1) models. Our Green's function method provides an analytic understanding of the new physics effects across the parameter space. We find that the predicted effects will be visible in precision measurements and different models of b quark mass generation can be distinguished by these measurements already at 250 GeV in the center of mass.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2019; ©2019 |
| Publication date | 2019; 2019 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Yoon, Jong Min |
|---|---|
| Degree supervisor | Peskin, Michael Edward, 1951- |
| Thesis advisor | Peskin, Michael Edward, 1951- |
| Thesis advisor | Graham, Peter |
| Thesis advisor | Quiceno Toro, Natalia |
| Degree committee member | Graham, Peter |
| Degree committee member | Quiceno Toro, Natalia |
| Associated with | Stanford University, Department of Physics. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Jong Min Yoon. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Thesis Ph.D. Stanford University 2019. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2019 by Jong Min Yoon
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