Abstract
We present a predictive warped model of flavor that is cut off at an ultraviolet scale O(103) TeV. This “Little Randall–Sundrum (LRS)” model is a volume-truncation, by a factor y≈6, of the RS scenario and is holographically dual to dynamics with number of colors larger by y. The LRS couplings between Kaluza–Klein states and the Standard Model fields, including the proton constituents, are explicitly calculable without ad hoc assumptions. Assuming separate gauge and flavor dynamics, a number of unwanted contributions to precision electroweak, Zbb¯ and flavor observables are suppressed in the LRS framework, compared with the corresponding RS case. An important consequence of the LRS truncation, independent of precise details, is a significant enhancement of the clean (golden) di-lepton LHC signals, by O(y3), due to a larger “ρ-photon” mixing and a smaller inter-composite coupling.
Highlights
Electroweak symmetry breaking (EWSB) in the Standard Model (SM) via the Higgs condensate v ≡ H ≃
One may question the urgency of this problem, as physics close to M P is unknown and inaccessible in the near future
Keeping Yukawa dynamics unchanged by our truncation, a number of unwanted contributions to precision EW and flavor data are suppressed within the Little RandallSundrum (LRS) scenario, compared to the RS counterpart
Summary
Electroweak symmetry breaking (EWSB) in the Standard Model (SM) via the Higgs condensate v ≡ H ≃. The 5D UV scale M5 is taken to be O(103) TeV to suppress light-flavor operators in this “Little RandallSundrum (LRS)” model [19]. Keeping Yukawa dynamics unchanged by our truncation, a number of unwanted contributions to precision EW and flavor data are suppressed within the LRS scenario, compared to the RS counterpart.
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