Detecting Asymmetric Dark Matter in the Sun with Neutrinos

Abstract

Dark Matter (DM) may have a relic density that is in part determined by a particle/antiparticle asymmetry, much like baryons. If this is the case, it can accumulate in stars like the Sun to sizable number densities and annihilate to Standard Model (SM) particles including neutrinos. We show that the combination of neutrino telescope and direct detection data can be used in conjunction to determine or constrain the DM asymmetry from data. Depending on the DM mass, the current neutrino data from Super-K and IceCube give powerful constraints on asymmetric DM unless its fractional asymmetry is $\lesssim 10^{-2}$. Future neutrino telescopes and detectors like Hyper-K and KM3NeT can search for the resulting signal of high-energy neutrinos from the center of the Sun. The observation of such a flux yields information on both the DM-nucleus cross section but also on the relative abundances of DM and anti-DM.

8 pages, 5 figures

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• Solar Neutrinos as a Probe of Dark Matter-Neutrino Interactions
• $\chi$aro$\nu$: a tool for neutrino flux generation from WIMPs
• The Effects of Asymmetric Dark Matter on Stellar Evolution I: Spin-Dependent Scattering
• Indirect searches for dark matter bound state formation and level transitions
• Neutrino mass and asymmetric dark matter: study with inert Higgs doublet and high scale validity
• Asymmetric dark matter with a spontaneously broken $U(1{)}^{\prime }$: self-interaction and gravitational waves
• Large Energy Singles at JUNO from Atmospheric Neutrinos and Dark Matter
• Dark Gamma Ray Bursts
• Capture rate of weakly interacting massive particles (WIMPs) in binary star systems
• Enhanced Photon Traps for Hyper-Kamiokande
• Neutrino telescope searches for dark matter in the Sun