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Published January 2008 | Published + Submitted
Journal Article Open

Sequestering CP violation and GIM-violation with warped extra dimensions

Abstract

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 bar theta, 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 bar theta to be at least about 10^(−12).

Additional Information

© 2008 IOP Publishing Ltd and SISSA. Received: January 3, 2008. Accepted: January 10, 2008. Published: January 29, 2008. We would like to acknowledge helpful conversations with Patrick Meade, Jared Kaplan, Matthew Schwartz, Patrick Fox, and Nima Arkani-Hamed, and Gilad Perez for conversations and comments on the draft. ALF would like to thank Matthew Baumgart for several clarifying discussions of electroweak precision constraints. LR is supported in part by NSF grants PHY-0201124 and PHY-0556111. ALF is supported by an NSF Graduate Research Fellowship. CC is supported in part by DOE grant DE-FG02-91ER40654. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

Attached Files

Published - Clifford_Cheung_2008_J._High_Energy_Phys._2008_069.pdf

Submitted - 0711.4421.pdf

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