Dark Matter and Dark Forces from a supersymmetric hidden sector

TL;DR

This paper demonstrates the viability of supersymmetric dark force models with gravity mediation, analyzing a string-inspired hidden sector that interacts with the visible sector through kinetic mixing, and compares relic abundance and detection prospects to experiments.

Contribution

It introduces a simple string-inspired supersymmetric hidden sector model with kinetic mixing and thoroughly analyzes its phenomenology and experimental viability.

Findings

Dark matter relic abundance can match observations.

Model predicts detectable signals in direct detection experiments.

Parameter space consistent with current experimental constraints.

Abstract

We show that supersymmetric "Dark Force" models with gravity mediation are viable. To this end, we analyse a simple string-inspired supersymmetric hidden sector model that interacts with the visible sector via kinetic mixing of a light Abelian gauge boson with the hypercharge. We include all induced interactions with the visible sector such as neutralino mass mixing and the Higgs portal term. We perform a detailed parameter space scan comparing the produced dark matter relic abundance and direct detection cross sections to current experiments.