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−¯¯¯¯K mixing arising from Kaluza-Klein (KK) gluon exchange, is proposed. Extending the strong-interaction gauge group in the bulk by an additional SU(3), a...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
22 February 2012
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| In: |
Physical review letters
Year: 2012, Jahrgang: 108, Heft: 8 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.108.081603 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.108.081603 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.108.081603 
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| Verfasserangaben: | Martin Bauer, Raoul Malm, and Matthias Neubert |
MARC
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| 520 | |a A minimal solution to the flavor problem of warped extra-dimension models, i.e., the excessive mixed-chirality contribution to CP violation in K−¯¯¯¯K 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 ϵK parameter are significantly relaxed. As a result, KK scales MKK∼2 TeV are consistent with all flavor observables without significant fine-tuning. The model predicts an extended Higgs sector featuring massive color-octet scalars and a tower of KK pseudoaxial gluon resonances, whose existence is not in conflict with recent LHC dijet bounds. | ||
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