WIMPless Dark Matter: Models and Signatures

TL;DR

This paper explores WIMPless dark matter models, especially Majorana fermions with spin-dependent interactions, highlighting potential detection prospects with IceCube/DeepCore within five years.

Contribution

It introduces specific WIMPless dark matter models with Majorana fermions and analyzes their detectability via spin-dependent scattering signatures.

Findings

IceCube/DeepCore can potentially detect WIMPless dark matter with 3σ significance

Models predict dominant spin-dependent scattering signals

Detection could occur within approximately five years of data collection

Abstract

We consider experimental signatures of WIMPless dark matter. We focus on models where the WIMPless dark matter candidate is a Majorana fermion, and dark matter scattering is predominantly spin-dependent. These models can be probed by IceCube/DeepCore, which can potentially find $3\sigma$ evidence with ~ 5 years of data.