Kinetic Mixing as the Origin of Light Dark Scales

Understand

We propose a model in which supersymmetric weak scale dark matter is charged under a U(1)_d dark gauge symmetry.

• Kinetic mixing between U(1)_d and hypercharge generates the appropriate hierarchy of scales needed to explain PAMELA and ATIC with a GeV scale force carrier and DAMA (or INTEGRAL) using the proposals of inelastic (or, respectively, exciting) dark matter.
• Because of the extreme simplicity of this setup, observational constraints lead to unambiguous determination of the model parameters.
• In particular, the DAMA scattering cross section is directly related to the size of the hypercharge D-term vacuum expectation value.