Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube

Kohta Murase, Ranjan Laha, Shin'Ichiro Ando, Markus Ahlers

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133 Scopus citations


Late time decay of very heavy dark matter is considered as one of the possible explanations for diffuse PeV neutrinos observed in IceCube. We consider implications of multimessenger constraints, and show that proposed models are marginally consistent with the diffuse γ-ray background data. Critical tests are possible by a detailed analysis and identification of the sub-TeV isotropic diffuse γ-ray data observed by Fermi and future observations of sub-PeV γ rays by observatories like HAWC or Tibet AS+MD. In addition, with several-year observations by next-generation telescopes such as IceCube-Gen2, muon neutrino searches for nearby dark matter halos such as the Virgo cluster should allow us to rule out or support the dark matter models, independently of γ-ray and anisotropy tests.

Original languageEnglish (US)
Article number071301
JournalPhysical review letters
Issue number7
StatePublished - Aug 11 2015

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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