Flavor Structure of Warped Extra Dimension Models

Details Flavor Structure of Warped Extra Dimension Models Flavor Structure of Warped Extra Dimension Models

2004-08-10

arxiv.org/abs/hep-ph/0408134v1

Phys.Rev.D71:016002,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

41 pages, 52 pages including appendices

Scientific paper

10.1103/PhysRevD.71.016002

We recently showed, in hep-ph/0406101, that warped extra dimensional models with bulk custodial symmetry and few TeV KK masses lead to striking signals at $B$-factories. In this paper, using a spurion analysis, we systematically study the flavor structure of models that belong to the above class. In particular we find that the profiles of the zero modes, which are similar in all these models, essentially control the underlying flavor structure. This implies that our results are robust and model independent in this class of models. We discuss in detail the origin of the signals in B-physics. We also briefly study other NP signatures that arise in rare K decays ($K \to \pi \nu \nu$), in rare top decays [$t \to c \gamma (Z, gluon)$] and the possibilty of CP asymmetries in $D^0$ decays to CP eigenstates such as $K_S \pi^0$ and others. Finally we demonstrate that with light KK masses, $\sim3$ TeV, the above class of models with anarchic $5D$ Yukawas has a ``CP problem'' since contributions to the neutron electric dipole moment are roughly 20 times larger than the current experimental bound. Using AdS/CFT correspondence, these extra-dimensional models are dual to a purely 4D strongly coupled conformal Higgs sector thus enhancing their appeal.

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