A solution to the flavor problem of warped extra-dimension models
A minimal solution to the flavor problem of warped extra-dimension models, i.e. the excessive mixed-chirality contribution to CP violation in K-Kbar mixing arising from Kaluza-Klein (KK) gluon exchange, is proposed. Extending the strong-interaction gauge group in the bulk by an additional SU(3), and...
Guardado en:
| Autores principales: | , , |
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| Formato: | Article (Journal) Chapter/Article |
| Lenguaje: | inglés |
| Publicado: |
2011
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| In: |
Arxiv
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| Acceso en línea: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1110.0471
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| Notas de Autor: | Martin Bauer, Raoul Malm and Matthias Neubert |
| Sumario: | A minimal solution to the flavor problem of warped extra-dimension models, i.e. the excessive mixed-chirality contribution to CP violation in K-Kbar mixing arising from Kaluza-Klein (KK) gluon exchange, is proposed. Extending the strong-interaction gauge group in the bulk by an additional SU(3), and breaking this symmetry to QCD via boundary conditions, the constraints arising from the epsilon_K parameter are significantly relaxed. As a result, KK scales M_KK ~ 2 TeV are consistent with all flavor observables without significant fine-tuning. The model predicts the existence of an extended Higgs sector featuring massive color-octet scalars and a tower of KK pseudo-axial gluon resonances, whose existence is not in conflict with recent LHC dijet bounds. |
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| Notas: | Gesehen am 11.01.2018 |
| Descripción Física: | Online Resource |