Muon anomalous magnetic moment and the stabilized Randall-Sundrum scenario

Abstract

We study the effects of extra dimension on the muon anomalous magnetic moment in the stabilized Randall-Sundrum scenario. The effects of the Kaluza-Klein states heavier than the cut-off scale expected to be of order ${\Lambda }_{\pi }$ are neglected. Contribution from the spin-2 Kaluza-Klein states dominates over that from the spin-0 radion. The recent BNL E821 results impose a strict constraint on the parameter space of the model: ${\Lambda }_{\pi }\approx 0.4-2.1$ TeV with $k/M_{\mathrm{Pl}}=0.01-0.1$. Small $k/M_{\mathrm{Pl}}$ is preferred if ${\Lambda }_{\pi }$ is TeV scale.

Comments: 9 pages, ReVTeX, reference added, version to appear in PLB