Fermion mass hierarchy from nonuniversal abelian extensions of the Standard Model
The fermion mass hierarchy is addresed from the framework of an abelian extension of the Standard Model U(1)X. By taking into account the cancellation of chiral anomalies, a set of U(1)X charges is presented with extended scalar and fermionic sectors. The scalar potential is shown, together with the...
- Autores:
-
Mantilla Serrano, Sebastian Felipe
- Tipo de recurso:
- Fecha de publicación:
- 2017
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/64118
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/64118
http://bdigital.unal.edu.co/64893/
- Palabra clave:
- 53 Física / Physics
Fermion mass hierarchy
Beyond the Standard Model
Abelian extensions
Masas de fermiones
Jerarquía de masas fermiónicas
Sector escalar extendido
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
| Summary: | The fermion mass hierarchy is addresed from the framework of an abelian extension of the Standard Model U(1)X. By taking into account the cancellation of chiral anomalies, a set of U(1)X charges is presented with extended scalar and fermionic sectors. The scalar potential is shown, together with the scalar spectrum of the model which includes the respective Goldstone bosons, new physical neutral and charged scalars at TeV scale and the 125 GeV Higgs boson. Then, the mass acquisition in the fermionic sector is studied in detail. The mass matrices present an specific texture called suppresion square texture (SST) which suggests the mass hierarchy when they are diagonalized by algebraic and numerical methods. The model turns out to be consistent is consistent at 5sigma and 3sigma in the quark and lepton sectors, respectively, without unpleasant fine-tuning procedures. |
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