The little Randall–Sundrum model at the large hadron collider

摘要

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 calculablewithout ad hoc assumptions. Assuming separate gauge and flavor dynamics, a number of unwanted contributions to precision electroweak, Zbˉb 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), dueto a larger “p-photon” mixing and a smaller inter-composite coupling.