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

References in corpus (8)

• A Theory of Dark Matter
• Cosmology and Astrophysics of Minimal Dark Matter
• A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
• PAMELA data and leptonically decaying dark matter
• Neutrino Constraints on the Dark Matter Total Annihilation Cross Section
• High energy neutrinos from neutralino annihilations in the Sun
• Dissecting the Cygnus Region with TeV Gamma Rays and Neutrinos
• Neutrino Signals from Solar Neutralino Annihilations in Anomaly Mediated Supersymmetry Breaking Model

Cited by in corpus (6)

• Pulsars versus Dark Matter Interpretation of ATIC/PAMELA
• ATIC, PAMELA, HESS, Fermi and nearby Dark Matter subhalos
• Muon Fluxes From Dark Matter Annihilation
• Probing Dark Matter Dynamics via Earthborn Neutrinos at IceCube
• Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter
• Cosmic Ray Positrons from Annihilations into a New, Heavy Lepton