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High Energy Physics - Phenomenology

arXiv:1503.04663 (hep-ph)
[Submitted on 16 Mar 2015 (v1), last revised 12 Aug 2015 (this version, v2)]

Title:Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube

Authors:Kohta Murase (PSU), Ranjan Laha (Stanford U.), Shin'ichiro Ando (U. Amsterdam), Markus Ahlers (UW-Madison)
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Abstract: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 gamma-ray background data. Critical tests are possible by a detailed analysis and identification of the sub-TeV isotropic diffuse gamma-ray data observed by Fermi and future observations of sub-PeV gamma 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 gamma-ray and anisotropy tests.
Comments: 6 pages, 4 figures, minor revision, published in PRL
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:1503.04663 [hep-ph]
  (or arXiv:1503.04663v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1503.04663
Journal reference: Phys.Rev.Lett. 115 (2015) 071301
Related DOI: https://doi.org/10.1103/PhysRevLett.115.071301

Submission history

From: Kohta Murase [view email]
[v1] Mon, 16 Mar 2015 14:20:40 UTC (442 KB)
[v2] Wed, 12 Aug 2015 16:00:13 UTC (442 KB)
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