Self-interacting dark matter constraints in a thick dark disk scenario

TL;DR

This paper investigates how a self-interacting thick dark matter disk in the Milky Way affects neutrino fluxes from the Sun, revealing constraints on dark matter properties and the disk's existence.

Contribution

It provides the first analysis of self-interacting dark disks' impact on solar neutrino signals and constrains dark matter models accordingly.

Findings

Self-interacting dark disks may not resolve small-scale structure issues.

Dark matter particles between 100 GeV and 1 TeV are constrained.

Presence of a dark disk in the Milky Way is challenged by neutrino flux data.

Abstract

A thick dark matter disk is predicted in cold dark matter simulations as the outcome of the interaction between accreted satellites and the stellar disk in Milky Way sized halos. We study the effects of a self-interacting thick dark disk on the energetic neutrino flux from the Sun. We find that for particle masses between 100 GeV and 1 TeV and dark matter annihilation to heavy leptons either the self-interaction may not be strong enough to solve the small scale structure motivation or a dark disk cannot be present in the Milky Way.