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Bauer M, Malm R, Neubert M. Solution to the flavor problem of warped extra-dimension models. Phys Rev Lett. 2012;108(8):081603doi: 10.1103/PhysRevLett.108.081603.
Bauer, M., Malm, R., & Neubert, M. (2012). Solution to the flavor problem of warped extra-dimension models. Physical review letters, 108(8), 081603. https://doi.org/10.1103/PhysRevLett.108.081603
Bauer, Martin, et al. "Solution to the flavor problem of warped extra-dimension models." Physical review letters vol. 108,8 (2012): 081603. doi: https://doi.org/10.1103/PhysRevLett.108.081603
Bauer M, Malm R, Neubert M. Solution to the flavor problem of warped extra-dimension models. Phys Rev Lett. 2012 Feb 24;108(8):081603. doi: 10.1103/PhysRevLett.108.081603. Epub 2012 Feb 22. PMID: 22463516.
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Phys Rev Lett. 2012 Feb 24;108(8):081603. doi: 10.1103/PhysRevLett.108.081603. Epub 2012 Feb 22.

Solution to the flavor problem of warped extra-dimension models.

Physical review letters

Martin Bauer, Raoul Malm, Matthias Neubert

Affiliations

  1. Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany.

PMID: 22463516 DOI: 10.1103/PhysRevLett.108.081603

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.

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