The muon anomalous magnetic moment in the Randall-Sundrum model

Understand

We calculate the anomalous magnetic moment of the muon in the minimal Randall-Sundrum model with standard model fields in five-dimensional (5D) warped space and a brane-localized Higgs.

• We use a fully 5D framework to compute the one-loop matching coefficients of the effective theory at the electroweak scale.
• The extra contribution to the anomalous magnetic moment from the model-independent gauge-boson exchange contributions \Delta a_\mu is approximately 8.8*10^-11 (1TeV/T)^2, where 1/T denotes the location of the TeV brane in conformal coordinates, and is related to the mass of the lowest gauge boson KK excitation, which is roughly 2.5T.
• The result constitutes the first complete determination of the gauge-boson contribution to g-2 and is robust against the variation of the bulk fermion masses and 5D Yukawa coupling.