Muon anomalous magnetic moment and penguin loops in warped extra dimensions
Abstract
We describe the computation of the one-loop muon anomalous magnetic moment and radiative penguin transitions in the minimal and custodially protected Randall-Sundrum model. A fully five-dimensional (5D) framework is employed to match the 5D theory onto the Standard Model extended by dimension-six operators. The additional contribution to the anomalous magnetic moment from the gauge-boson exchange contributions is Delta a_mu \approx 8.8 (27.2) x 10^(-11) x (1 TeV/T)^2, where the first (second) number refers to the minimal (custodially-protected) model. Here denotes the location of the TeV brane in conformal coordinates, and is related to the mass of the lowest gauge-boson KK excitation by M_KK \approx 2.35 T. We also determine the Higgs-exchange contribution, which depends on the 5D Yukawa structure and the precise interpretation of the localisation of the Higgs field near or at the TeV brane.
Keywords
Cite
@article{arxiv.1404.7157,
title = {Muon anomalous magnetic moment and penguin loops in warped extra dimensions},
author = {M. Beneke and P. Moch and J. Rohrwild},
journal= {arXiv preprint arXiv:1404.7157},
year = {2015}
}
Comments
19 pages