title: Solution to the flavor problem of warped extra-dimension models.
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 ε(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 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.
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Bauer
authors.forename: Raoul
authors.initials: R
authors.lastname: Malm
authors.forename: Matthias
authors.initials: M
authors.lastname: Neubert