On the Oscillation of Neutrinos Produced by the Annihilation of Dark Matter inside the Sun

Abstract

The annihilation of dark matter particles captured by the Sun can lead to a neutrino flux observable in neutrino detectors. Considering the fact that these dark matter particles are non-relativistic, if a pair of dark matter annihilates to a neutrino pair, the spectrum of neutrinos will be monochromatic. We show that in this case, even after averaging over production point inside the Sun, the oscillatory terms of the oscillation probability do not average to zero. This leads to interesting observable features in the annual variation of the number of muon track events. We show that smearing of the spectrum due to thermal distribution of dark matter inside the Sun is too small to wash out this variation. We point out the possibility of studying the initial flavor composition of neutrinos produced by the annihilation of dark matter particles via measuring the annual variation of the number of muon-track events in neutrino telescopes.

20 pages, references added, discussions added, version to be published in PRD

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Cited by in corpus (13)

• Dark matter in the Sun: scattering off electrons vs nucleons
• Multi-Component Dark Matter Systems and Their Observation Prospects
• A realistic model for Dark Matter interactions in the neutrino portal paradigm
• AMEND: A Model Explaining Neutrino masses and Dark matter testable at the LHC and MEG
• The capture of dark matter particles through the evolution of low-mass stars
• $\chi$aro$\nu$: a tool for neutrino flux generation from WIMPs
• A novel method to extract dark matter parameters from neutrino telescope data
• Probing the Dark Matter mass and nature with neutrinos
• On the Role of Neutrinos Telescopes in the Search for Dark Matter Annihilations in the Sun
• Indirect Dark Matter Detection in the Light of Sterile Neutrinos
• Non-standard interactions and neutrinos from dark matter annihilation in the Sun
• Brazilian Community Report on Dark Matter
• Searching for Dark Matter Annihilation to Monoenergetic Neutrinos with Liquid Scintillation Detectors