Radion Mediated Flavor Changing Neutral Currents

Abstract

In the context of a warped extra-dimension with Standard Model fields in the bulk, we obtain the general flavor structure of the Radion couplings to fermions and show that the result is independent on the particular nature of the Higgs mechanism (bulk or brane localized). These couplings will be generically misaligned with respect to the fermion mass matrix when the fermion bulk mass parameters are not all degenerate. When the Radion is light enough, the generic size of these tree-level flavor changing couplings will be strongly constrained by the experimental bounds on $\Delta F=2$ processes. At the LHC the possibility of a heavier Radion decaying into top and charm quarks is then considered as a promising signal to probe the flavor structure of both the Radion sector and the whole scenario.

4 pages, 2 figures, 1 table

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• The Hunt for New Physics at the Large Hadron Collider
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• Implications of the absence of high-mass radion signals
• Phenomenology of a light scalar: the dilaton
• Higgs Production from Gluon Fusion in Warped Extra Dimensions
• Differentiating the Higgs boson from the dilaton and the radion at hadron colliders
• Higgs-Radion interpretation of the LHC data?
• Cosmological evolution of Yukawa couplings: the 5D perspective
• Precocious Diphoton Signals of the Little Radion at Hadron Colliders
• A Natural Hierarchy and a low New Physics scale from a Bulk Higgs
• Astrophysical Implications of a Visible Dark Matter Sector from a Custodially Warped-GUT
• Interactions of a Stabilized Radion and Duality
• TASI 2009 Lectures - Flavor Physics
• Radion and Higgs masses in gauge-Higgs unification
• Radion Phenomenology with 3 and 4 Generations
• Saving the fourth generation Higgs with radion mixing
• Radion Flavor Violation in Warped Extra Dimension
• Echoes from a Warped Dimension
• Radion-Higgs Mixing in 2HDMs