Monoenergetic Neutrinos from WIMP Annihilation in Jupiter

Abstract

Weakly interacting massive particles (WIMPs) can be captured by the Sun and annihilate in the core, which may result in production of kaons that can decay at rest into monoenergetic 236 MeV neutrinos. Several studies of detection of these neutrinos at DUNE have been carried out. It has been shown that if the WIMP mass is below 4 GeV, then they will evaporate prior to annihilation, suppressing the signal. Since Jupiter has a cooler core, WIMPs with masses in the 1-4 GeV range will not evaporate and can thus annihilate into monoenergetic neutrinos. We calculate the flux of these neutrinos near the surface of Jupiter and find that it is comparable to the flux at DUNE for masses above 4 GeV and substantially greater in the 1-4 GeV range. Of course, detecting these neutrinos would require a neutrino detector near Jupiter. Obviously, it will be many decades before such a detector can be built, but should direct detection experiments find a WIMP with a mass in the 1-4 GeV range, it may be one of the few ways to learn about the annihilation process. A liquid hydrogen time projection chamber might be able to get precise directional information and energy of these neutrinos (and hydrogen is plentiful in the vicinity of Jupiter). We speculate that such a detector could be placed on the far side of one of the tidally locked Amalthean moons; the moon itself would provide substantial background shielding and the surface would allow easier deployment of solar panels for power generation.

14 pages, 4 figures. Typos corrected, more discussion of detector capabilities, references added. Version to appear in Physical Review D

References in corpus (10)

• Constraints on Low-Mass WIMP Interactions on 19F from PICASSO
• Celestial-Body Focused Dark Matter Annihilation Throughout the Galaxy
• New Limits on Dark Matter from Super-Kamiokande
• Evaporation of dark matter from celestial bodies
• Search for GeV-scale Dark Matter Annihilation in the Sun with IceCube DeepCore
• Planet-bound dark matter and the internal heat of Uranus, Neptune, and hot-Jupiter exoplanets
• A tale of dark matter capture, sub-dominant WIMPs, and neutrino observatories
• Jupiter missions as probes of dark matter
• Directional Searches at DUNE for Sub-GeV Monoenergetic Neutrinos Arising from Dark Matter Annihilation in the Sun
• WIMP capture and annihilation in the Earth in effective theories

Cited by in corpus (5)

• Limits on High-Frequency Gravitational Waves in Planetary Magnetospheres
• Optimal Celestial Bodies for Dark Matter Detection
• Constraints on photon mass and dark photon from the Jovian magnetic field
• Dark Matter (H)eats Young Planets
• Extending the Dark Matter Reach of Water Cherenkov Detectors using Jupiter