Low-Energy Probes of a Warped Extra Dimension
Abstract
We investigate a natural realization of a light Abelian hidden sector in an extended Randall-Sundrum (RS) model. In addition to the usual RS bulk we consider a second warped space containing a bulk U(1)_x gauge theory with a characteristic IR scale of order a GeV. This Abelian hidden sector can couple to the standard model via gauge kinetic mixing on a common UV brane. We show that if such a coupling induces significant mixing between the lightest U(1)_x gauge mode and the standard model photon and Z, it can also induce significant mixing with the heavier U(1)_x Kaluza-Klein (KK) modes. As a result it might be possible to probe several KK modes in upcoming fixed-target experiments and meson factories, thereby offering a new way to investigate the structure of an extra spacetime dimension.
Keywords
Cite
@article{arxiv.1002.3361,
title = {Low-Energy Probes of a Warped Extra Dimension},
author = {Kristian L. McDonald and David E. Morrissey},
journal= {arXiv preprint arXiv:1002.3361},
year = {2010}
}
Comments
26 pages, 1 figure, added references, corrected minor typos, same as journal version