Sequestering CP Violation and GIM-Violation with Warped Extra Dimensions

A. Liam Fitzpatrick (Harvard U.; Clifford Cheung (Harvard U.; Inst. Advanced Study); Lisa Randall (Harvard U.; Phys. Dept.); Phys. Dept. & Princeton

Sequestering CP Violation and GIM-Violation with Warped Extra Dimensions

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arxiv 0711.4421 v1 submitted 2007-11-28 hep-th hep-ph

Clifford Cheung (Harvard U. , Phys. Dept. & Princeton , Inst. Advanced Study) , A. Liam Fitzpatrick (Harvard U. , Phys. Dept.) , Lisa Randall (Harvard U. This is my paper · ORCID

classification hep-thhep-ph

keywords violationmodelbulkdimensionsextraflavorlocalizedsequestering

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We propose a model of spontaneous CP violation to address the strong CP problem in warped extra dimensions that relies on sequestering flavor and CP violation. We assume that brane-localized Higgs Yukawa interactions respect a U(3) flavor symmetry that is broken only by bulk fermion mass and Yukawa terms. All CP violation arises from the vev of a CP-odd scalar field localized in the bulk. To suppress radiative corrections to theta-bar, the doublet quarks in this model are localized on the IR brane. We calculate constraints from flavor-changing neutral currents (FCNCs), precision electroweak measurements, CKM unitarity, and the electric dipole moments in this model and predict theta-bar to be at least about 10^-12.

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