Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube

Murase, Kohta; Laha, Ranjan; Ando, Shinʼichiro; Ahlers, M.

doi:10.1103/physrevlett.115.071301

Cited by 158 publications

(150 citation statements)

References 92 publications

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“…In the low energy region the best constraints are derived from KASCADE, CASA-MIA and KASCADE-Grande: minimal lifetime increases from τ 6 · 10 19 yr at M X = 10 7 GeV to τ 3 · 10 21 yr at M X = 5 · 10 9 GeV being of the same order as the constraints of Refs. [44][45][46] for low energies, where constraints are put by Northern hemisphere experiments.…”

Section: Comparison With Photon Limitsmentioning

confidence: 99%

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Constraining heavy decaying dark matter with the high energy gamma-ray limits

2016

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We consider decaying dark matter with masses 10 7 M 10 16 GeV, as a source of ultra-high energy (UHE) gamma rays. Using recent limits on UHE gamma-ray flux for energies E γ > 2 · 10 14 eV, provided by extensive air shower observatories, we put limits on masses and lifetimes of the dark matter. We also discuss possible dark matter decay origin of tentative 100 PeV photon flux detected with EAS-MSU experiment.

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Section: Comparison With Photon Limitsmentioning

confidence: 99%

“…[16,42,44]. In recent years the interest to the subject has grown [43,45,46,48] due to PeV neutrino events observation by IceCube [40].…”

Section: Introductionmentioning

confidence: 99%

Constraining heavy decaying dark matter with the high energy gamma-ray limits

2016

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“…Many papers discuss the neutrino emission from one specific source class by adopting a modeldependent approach, for active galactic nuclei (AGNs) [9][10][11][12][13][14][15][16][17][18], star-forming galaxies [19][20][21][22][23][24][25][26][27][28], gamma-ray bursts [29][30][31][32][33][34][35][36], galaxy clusters [37][38][39][40], and dark matter decays [41][42][43][44][45].…”

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confidence: 99%

Tomographic Constraints on High-Energy Neutrinos of Hadronuclear Origin

2015

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Mounting evidence suggests that the TeV-PeV neutrino flux detected by the IceCube telescope has mainly an extragalactic origin. If such neutrinos are primarily produced by a single class of astrophysical sources via hadronuclear (pp) interactions, a similar flux of gamma-ray photons is expected. For the first time, we employ tomographic constraints to pinpoint the origin of the IceCube neutrino events by analyzing recent measurements of the cross correlation between the distribution of GeV gamma rays, detected by the Fermi satellite, and several galaxy catalogs in different redshift ranges. We find that the corresponding bounds on the neutrino luminosity density are up to 1 order of magnitude tighter than those obtained by using only the spectrum of the gamma-ray background, especially for sources with mild redshift evolution. In particular, our method excludes any hadronuclear source with a spectrum softer than E −2.1 as a main component of the neutrino background, if its evolution is slower than ð1 þ zÞ 3 . Starburst galaxies, if able to accelerate and confine cosmic rays efficiently, satisfy both spectral and tomographic constraints. Introduction.-The discovery of the PeV neutrinos by IceCube [1,2] has launched the era of high-energy neutrino astronomy. The current data set is compatible with a flux in excess with respect to the atmospheric background, with an isotropic allocation of events on the celestial sphere and flavor equipartition [1][2][3][4][5][6]. Because of the current low statistics, the origin of the high-energy IceCube events is not yet known, but an extragalactic and mostly diffuse origin appears to be favored [7,8].High-energy neutrino production from cosmic accelerators has been the subject of a cascade of theoretical studies, especially after the IceCube results were announced [7,8]. Many papers discuss the neutrino emission from one specific source class by adopting a modeldependent approach, for active galactic nuclei (AGNs) [9][10][11][12][13][14][15][16][17][18], star-forming galaxies [19][20][21][22][23][24][25][26][27][28], gamma-ray bursts [29][30][31][32][33][34][35][36], galaxy clusters [37][38][39][40], and dark matter decays [41][42][43][44][45].Alternatively, a more generic approach focuses on the phenomenological aspects of the potential sources. For example, assuming photomeson production (pγ) of neutrinos, Ref.[46] obtained constraints on the source size and magnetic field strength needed to match the IceCube flux. Reference [47] hypothesized that the TeV-PeV neutrinos were generated via hadronuclear interactions (pp) and concluded that the cosmic ray spectrum of the dominant neutrino sources should be harder than E −2.2 . This is because the associated gamma-ray spectrum will extend down to GeV energies, where the flux of the isotropic gamma-ray background (IGRB) measured with the Fermi Large Area Telescope (LAT) [48] cannot be overshot. The connection with sources of ultrahigh-energy cosmic rays has also been considered [49][50][51].

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“…However after the analysis of seven years of data of muon tracks, the IceCube reports [7] that there is no clear correlations with the known astrophysical hot-spots like the known supernova remnants (SNR) or Active Galactic Nuclei (AGN). In the light of no identification of the astrophysical sources of IceCube neutrinos it has been proposed that the neutrinos could arise from the decay of PeV mass Dark Mata e-mail: lambiase@sa.infn.it ter (DM) [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] (the DM if boosted could may be of lower mass also [24,25]). …”

Section: Introductionmentioning

confidence: 99%

PeV IceCube signals and Dark Matter relic abundance in modified cosmologies

2018

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The discovery by the IceCube experiment of a high-energy astrophysical neutrino flux with energies of the order of PeV, has opened new scenarios in astroparticles physics. A possibility to explain this phenomenon is to consider the minimal models of Dark Matter (DM) decay, the 4-dimensional operator ∼ y αχ L L α H χ , which is also able to generate the correct abundance of DM in the Universe. Assuming that the cosmological background evolves according to the standard cosmological model, it follows that the rate of DM decay χ ∼ |y αχ | 2 needed to get the correct DM relic abundance ( χ ∼ 10 −58 ) differs by many orders of magnitude with respect that one needed to explain the IceCube data ( χ ∼ 10 −25 ), making the four-dimensional operator unsuitable. In this paper we show that assuming that the early Universe evolution is governed by a modified cosmology, the discrepancy between the two the DM decay rates can be reconciled, and both the IceCube neutrino rate and relic density can be explained in a minimal model.

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Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube

Cited by 158 publications

References 92 publications

Constraining heavy decaying dark matter with the high energy gamma-ray limits

Constraining heavy decaying dark matter with the high energy gamma-ray limits

Tomographic Constraints on High-Energy Neutrinos of Hadronuclear Origin

PeV IceCube signals and Dark Matter relic abundance in modified cosmologies

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