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A comparative study of contributions to ϵ K in the RS model

2009/12/31 by Bjoern Duling · 10 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Combinatorics #Cosmology and Gravitation Theories #Dimension (graph theory) #Gluon #Higgs boson #Mathematical physics #Mathematics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum chromodynamics #Quantum mechanics #Renormalization #Renormalization group #hep-ph

paper · pdf · doi:10.1007/jhep05(2010)109

published in Journal of High Energy Physics 2010(5) (Springer Nature) · 13 pages, 5 figures. Extended discussion, references added, typos corrected

arxiv created 2010/02/24 · openalex publication_date 2010/05/01 · arxiv updated 2014/11/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We contrast the impact of Higgs mediated flavor changing neutral currents on epsilonK 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.

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