Ultravisible warped model from flavor triviality and improved naturalness

被引：72

作者：

Delaunay, Cedric ^{[1
]}

Gedalia, Oram ^{[1
]}

Lee, Seung J. ^{[1
]}

Perez, Gilad ^{[1
]}

Ponton, Eduardo ^{[2
]}

机构：

[1] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel

[2] Columbia Univ, Dept Phys, New York, NY 10027 USA

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 11期

基金：

以色列科学基金会;

关键词：

UNITARITY TRIANGLE; VIOLATION; PHYSICS; HIGGS; ASYMMETRIES; ORDER;

D O I：

10.1103/PhysRevD.83.115003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A warped extra-dimensional model, where the standard model Yukawa hierarchy is set by UV physics, is shown to have a sweet spot of parameters with improved experimental visibility and possibly naturalness. Upon marginalizing over all the model parameters, a Kaluza-Klein scale of 2.1 TeV can be obtained at 2 sigma (95.4% C. L.) without conflicting with electroweak precision measurements. Fitting all relevant parameters simultaneously can relax this bound to 1.7 TeV. In this bulk version of the Rattazzi-Zaffaroni shining model, flavor violation is also highly suppressed, yielding a bound of 2.4 TeV. Nontrivial flavor physics at the LHC in the form of flavor gauge bosons is predicted. The model is also characterized by a depletion of the third-generation couplings-as predicted by the general minimal flavor violation framework-which can be tested via flavor precision measurements. In particular, sizable CP violation in Delta B = 2 transitions can be obtained, and there is a natural region where B-s mixing is predicted to be larger than B-d mixing, as favored by recent Tevatron data. Unlike other proposals, the new contributions are not linked to Higgs or any scalar exchange processes.

引用

页数：20

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