Low-Energy Signals from Kinetic Mixing with a Warped Abelian Hidden Sector

Understand

We investigate the detailed phenomenology of a light Abelian hidden sector in the Randall-Sundrum framework.

• Relative to other works with light hidden sectors, the main new feature is a tower of hidden Kaluza-Klein vectors that kinetically mix with the Standard Model photon and Z.
• We investigate the decay properties of the hidden sector fields in some detail, and develop an approach for calculating processes initiated on the ultraviolet brane of a warped space with large injection momentum relative to the infrared scale.
• Using these results, we determine the detailed bounds on the light warped hidden sector from precision electroweak measurements and low-energy experiments.