Solution to the flavor problem of warped extra-dimension models

• Verfasst von: Bauer, Martin [VerfasserIn]
• Verfasst von: Malm, Raoul [VerfasserIn]
• Verfasst von: Neubert, Matthias [VerfasserIn]
• Titel: Solution to the flavor problem of warped extra-dimension models
• Verf.angabe: Martin Bauer, Raoul Malm, and Matthias Neubert
• E-Jahr: 2012
• Jahr: 22 February 2012
• Umfang: 5 S.
• Fussnoten: Gesehen am 21.11.2017
• Titel Quelle: Enthalten in: Physical review letters
• Ort Quelle: College Park, Md. : APS, 1958
• Jahr Quelle: 2012
• Band/Heft Quelle: 108(2012,8) Artikel-Nummer 081603, 5 Seiten
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.108.081603
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565551834

Abstract

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.