A Simple Flavor Protection for RS

Details A Simple Flavor Protection for RS A Simple Flavor Protection for RS

2008-06-24

arxiv.org/abs/0806.3757v1

Phys.Rev.D80:016001,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages

Scientific paper

10.1103/PhysRevD.80.016001

We present a simple variation of warped flavor models where the hierarchies of fermion masses and mixings are still explained but dangerous flavor violating effects in the Kaon sector are greatly reduced. The key new ingredients are two horizontal U(1) symmetries. These symmetries forbid flavor violation in the down quark sector (with the exception of small IR brane localized kinetic mixing terms for the left-handed quarks) while allowing for flavor violation in the up quark sector. The leading flavor constraints come from D - anti-D mixing, and are safely satisfied for the KK mass scale of order 3 TeV. Our analysis of the flavor constraints also includes the constraints due to the (usually ignored) localized kinetic mixing terms. We also comment on the effects of the additional U(1) gauge bosons.

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