AGN constraints on neutrino-dark matter scattering

TL;DR

This paper uses neutrino observations from active galactic nuclei to set new limits on dark matter-neutrino interactions, exploring models involving dark photons coupled to baryon minus lepton number.

Contribution

It introduces a novel method to constrain dark matter-neutrino scattering using astrophysical neutrino data from AGNs.

Findings

New constraints on dark matter-neutrino scattering cross sections.

Implications for dark photon models with baryon minus lepton number coupling.

Enhanced understanding of dark matter interactions in galactic centers.

Abstract

The IceCube collaboration has identified neutrinos of energy $\sim 10-100$ TeV from the blazar TXS 0506+056 and the active galaxy NGC 1068, which must have traveled through a dense dark matter spike surrounding the supermassive black holes that power the galactic nuclei. We use this to set new constraints on dark matter-neutrino scattering, and interpret the results in terms of a dark photon that couples to baryon minus lepton number.