Prospects for Detecting Neutrino Signals from Annihilating/Decaying Dark Matter to Account for the PAMELA and ATIC results

Abstract

Recent PAMELA data show that positron fraction has an excess above several GeV while anti-proton one is not. Moreover ATIC data indicates that electron/positron flux have a bump from 300 GeV to 800 GeV. Both annihilating dark matter (DM) with large boost factor and decaying DM with the life around $10^{26}s$ can account for the PAMELA and ATIC observations if their main final products are charged leptons ($e$, $\mu$ and $\tau$). In this work, we calculated the neutrino flux arising from $\mu$ and $\tau$ which originate from annihilating/decaying DM, and estimated the final muon rate in the neutrino telescopes, namely Antares and IceCube. Given the excellent angular resolution, Antares and IceCube are promising to discover the neutrino signals from Galactic center and/or large DM subhalo in annihilating DM scenario, but very challenging in decaying DM scenario.

21 pages, 7 figures, 2 tables. V2: references added. V3: the number density of massive subhalo has been discussed in the appendix; accepted by PRD

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Cited by in corpus (11)

• Pulsars versus Dark Matter Interpretation of ATIC/PAMELA
• Explaining PAMELA and WMAP data through Coannihilations in Extended SUGRA with Collider Implications
• ATIC, PAMELA, HESS, Fermi and nearby Dark Matter subhalos
• Probing Unified Origin of Dark Matter and Baryon Asymmetry at PAMELA/Fermi
• Muon Fluxes From Dark Matter Annihilation
• Probing Dark Matter Dynamics via Earthborn Neutrinos at IceCube
• Revisiting Multi-Component Dark Matter with New AMS-02 Data
• Cosmic Ray Positrons from Annihilations into a New, Heavy Lepton
• Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter
• Probing dark matter models with neutrinos from the Galactic center
• Future sensitivity of neutrino telescopes to dark matter annihilations from the cosmic diffuse neutrino signal