Non-standard interactions and neutrinos from dark matter annihilation in the Sun

TL;DR

This paper investigates how non-standard neutrino interactions (NSI) affect neutrino signals from dark matter annihilation in the Sun, showing that NSI can significantly modify neutrino fluxes and detection rates.

Contribution

It provides a detailed analysis of the impact of NSI on neutrino signals from dark matter in the Sun, including simulation results and implications for experimental bounds.

Findings

NSI can modify neutrino fluxes by a factor of a few.

NSI can cause up to 30% correction in muon track event rates.

Experimental bounds on dark matter remain robust despite NSI effects.

Abstract

We perform an analysis of the influence of non-standard neutrino interactions (NSI) on neutrino signal from dark matter annihilations in the Sun. Taking experimentally allowed benchmark values for the matter NSI parameters we show that the evolution of such neutrinos with energies at GeV scale can be considerably modified. We simulate propagation of neutrinos from the Sun to the Earth for realistic dark matter annihilation channels and find that the matter NSI can result in at most 30% correction to the signal rate of muon track events at neutrino telescopes. Still present experimental bounds on dark matter from these searches are robust in the presence of NSI within considerable part of their allowed parameter space. At the same time electron neutrino flux from dark matter annihilation in the Sun can be changed by a factor of few.