A Comparative Study of Contributions to ${\epsilon }_K$ in the RS Model

Abstract

We contrast the impact of Higgs mediated flavor changing neutral currents on epsilon_K in the framework of a warped extra dimension that was recently calculated by Azatov et al. with the older results for Kaluza-Klein gluon induced corrections to that observable. We find that the most stringent constraint on the KK scale for a Higgs field localized on the infrared brane for reasonable additional assumptions comes from KK gluon exchange. In the case of a bulk Higgs field we show that for certain scenarios the Higgs contribution can in fact exceed the KK gluon contribution. In the course of this analysis we also describe in detail the different renormalization procedures that have to be employed in the KK gluon and Higgs cases to relate the new physics at high energies to low energy observables.

13 pages, 5 figures. Extended discussion, references added, typos corrected

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Cited by in corpus (9)

• Flavor Physics in the Randall-Sundrum Model: II. Tree-Level Weak-Interaction Processes
• The Custodial Randall-Sundrum Model: From Precision Tests to Higgs Physics
• Delta F = 2 observables and B -> X_q gamma decays in the Left-Right Model: Higgs particles striking back
• Ultra Visible Warped Model From Flavor Triviality & Improved Naturalness
• Higgs Production from Gluon Fusion in Warped Extra Dimensions
• Neutral kaon mixing beyond the standard model with nf=2+1 chiral fermions
• The birds and the Bs in RS: the b to s gamma penguin in a warped extra dimension
• $b\to ss\bar{d}$ decay in Randall-Sundrum models
• New Physics Search in the Doubly Weak Decay ${\overline{B}}^0\to K^{+}{\pi }^{-}$