Flavor violation and warped geometry

By S. Huber. 2003

264 citations recorded by the source corpus.

Extra dimensions have interesting consequences for flavor physics. We consider a setup where the standard model fermions and gauge fields reside in the bulk of a warped extra dimension. Fermion masses and mixings are explained by flavor dependent fermion locations, without relying on hierarchical Yukawa couplings. We discuss various flavor violating processes induced by (Kaluza–Klein) gauge boson exchange and non-renormalizable operators. Experimental constraints are satisfied with a Kaluza–Klein scale of about 10 TeV. Some processes, such as muon–electron conversion, are within reach of next generation experiments.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/0f847579a91d5482fbe39abbc0acb7c36228eae0

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In Nuclear and High Energy Physics

Citations in the corpus

Flavor Physics in the Quark Sector (2009, background): “hierarchies in fermion masses and mixings [176, 1193, 1208].”
Higgs Physics at the HL-LHC and HE-LHC (2019, methodology): “The Randall-Sundrum warped extra-dimensional model has been proposed to address the hierarchy problem and simultaneously explain the hierarchy of the SM fermion masses [648, 676, 677, 678, 679].”
Proton stability in grand unified theories, in strings and in branes (2006, background): “This procedure leads naturally to a hierarchy of the Yukawas couplings if different generations of standard model fermions are located at different points in the bulk [286, 287, 288, 289].”
Electroweak and Flavour Structure of a Warped Extra Dimension with Custodial Protection (2009, background): “For masses of fermionic KK modes significantly below 1TeV, as identified in [14, 15], such effects have to be taken into account, although they are generally smaller than the ones related to the breakdown of universality [7, 27, 44, 67].”
The flavor of the composite pseudo-goldstone Higgs (2008, background): “This fixes the hierarchy among the fqi’s to be [5] fq2/fq3 ∼ λ(2), fq1/fq3 ∼ λ(3).”
Flavor and CP invariant composite Higgs models (2011, background): “Regrettably this assumption is incompatible with the dynamical mechanism to generate flavor hierarchies starting with structure-less or anarchic Yukawas, which is realized in Randall-Sundrum scenarios or theories with a conformal sector [6].”
Rare K and B Decays in a warped extra dimension with custodial protection (2008, background): “1 Zero Mode Localisation Bulk fermions in the RS background offer a natural explanation of the observed hierarchies in fermion masses and mixings [19,21,27].”