Possible interpretations of IceCube high-energy neutrino events

Fong, Chee Sheng; Minakata, Hisakazu; Panes, B.; Funchal, R. Zukanovich

doi:10.1007/jhep02(2015)189

Cited by 56 publications

(55 citation statements)

References 57 publications

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“…Decaying dark matter as a potential source for these neutrino events (focusing on the energy spectrum) has been considered in the literature [19][20][21][22]. Here we present a geometric analysis which is complimentary to the previous studies.…”

Section: Jhep01(2016)161mentioning

confidence: 83%

Geometric compatibility of IceCube TeV-PeV neutrino excess and its galactic dark matter origin

Bai

Salvadó

2016

J. High Energ. Phys.

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Abstract:We perform a geometric analysis for the sky map of the IceCube TeV-PeV neutrino excess and test its compatibility with the sky map of decaying dark matter signals in our galaxy. We have found that a galactic decaying dark matter component in general improve the goodness of the fit of our model, although the pure isotropic hypothesis has a better fit than the pure dark matter one. We also consider several representative decaying dark matter, which can provide a good fit to the observed spectrum at IceCube with a dark matter lifetime of around 12 orders of magnitude longer than the age of the universe.

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Section: Jhep01(2016)161mentioning

confidence: 83%

Geometric compatibility of IceCube TeV-PeV neutrino excess and its galactic dark matter origin

Bai

Salvadó

2016

J. High Energ. Phys.

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“…Assuming nondetections of cosmic neutrino signals, in light of IceCube and Fermi, the power of multimessenger approaches had been demonstrated to constrain particle properties of VHDM [29][30][31][32][33][34], even for m dm ≳ 0.1 PeV [33,34]. As soon as PeV neutrinos were discovered, the VHDM scenario was invoked [35][36][37] and various phenomenological models have been developed [38][39][40][41][42][43][44][45]. Although they do not give a natural explanation why the observed neutrino flux is comparable to both the diffuse γ-ray background and CR nucleon-or nuclei-survival bounds [46,47], the VHDM scenario can presently be consistent with the data [48,49].…”

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confidence: 99%

Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube

et al. 2015

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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 þ 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.

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“…Following eq. (3.18), and adopting the expression of the Hubble rate in the radiationdominated epoch [80]: 20) with M Pl being the Planck mass, we can easily find a solution:…”

Section: Jhep11(2016)022mentioning

confidence: 99%

“…[8][9][10] for a general discussion, and references therein, 1 but it is certainly intriguing to speculate about a new-physics origin of these events. Some models have been proposed, explaining the high-energy IceCube signal as the decay of a long-lived particle [11,12], that can also constitute a viable dark matter (DM) candidate [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. A model of right handed neutrino DM predicting a signal in high energy neutrinos and able to reproduce the matter-antimatter asymmetry with leptogenesis was presented in ref.…”

Section: Introductionmentioning

confidence: 99%

A consistent model for leptogenesis, dark matter and the IceCube signal

Fiorentin

Niro

Fornengo

2016

J. High Energ. Phys.

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We discuss a left-right symmetric extension of the Standard Model in which the three additional right-handed neutrinos play a central role in explaining the baryon asymmetry of the Universe, the dark matter abundance and the ultra energetic signal detected by the IceCube experiment. The energy spectrum and neutrino flux measured by IceCube are ascribed to the decays of the lightest right-handed neutrino N 1 , thus fixing its mass and lifetime, while the production of N 1 in the primordial thermal bath occurs via a freeze-in mechanism driven by the additional SU(2) R interactions. The constraints imposed by IceCube and the dark matter abundance allow nonetheless the heavier righthanded neutrinos to realize a standard type-I seesaw leptogenesis, with the B − L asymmetry dominantly produced by the next-to-lightest neutrino N 2 . Further consequences and predictions of the model are that: the N 1 production implies a specific power-law relation between the reheating temperature of the Universe and the vacuum expectation value of the SU(2) R triplet; leptogenesis imposes a lower bound on the reheating temperature of the Universe at 7 × 10 9 GeV. Additionally, the model requires a vanishing absolute neutrino mass scale m 1 0.

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Possible interpretations of IceCube high-energy neutrino events

Cited by 56 publications

References 57 publications

Geometric compatibility of IceCube TeV-PeV neutrino excess and its galactic dark matter origin

Geometric compatibility of IceCube TeV-PeV neutrino excess and its galactic dark matter origin

Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube

A consistent model for leptogenesis, dark matter and the IceCube signal

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