The 125 GeV boson : a composite scalar?
Assuming that the 125 GeV particle observed at the LHC is a composite scalar and responsible for the electroweak gauge symmetry breaking, we consider the possibility that the bound state is generated by a non-Abelian gauge theory with dynamically generated gauge boson masses and a specific chiral sy...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | Brasil |
| Recursos: | Universidade Federal do Rio Grande do Sul (UFRGS) |
| Repositorio: | Repositório Institucional da UFRGS |
| Idioma: | inglés |
| OAI Identifier: | oai:www.lume.ufrgs.br:10183/116324 |
| Acesso em linha: | http://hdl.handle.net/10183/116324 |
| Access Level: | acceso abierto |
| Palavra-chave: | Simetrias quiral Bosons de higgs Estados ligados Massa dos bosons intermediários Quebra espontanea de simetrias Teorias eletrofracas Teoria de campos de calibres |
| Resumo: | Assuming that the 125 GeV particle observed at the LHC is a composite scalar and responsible for the electroweak gauge symmetry breaking, we consider the possibility that the bound state is generated by a non-Abelian gauge theory with dynamically generated gauge boson masses and a specific chiral symmetry breaking dynamics motivated by confinement. The scalar mass is computed with the use of the Bethe- Salpeter equation and its normalization condition as a function of the SUðNÞ group and the respective fermionic representation. If the fermions that form the composite state are in the fundamental representation of the SUðNÞ group, we can generate such a light boson only for one specific number of fermions for each group. We address the uncertainties underlying this result, when considering the strong dynamics in isolation. |
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