Confusing the extragalactic neutrino flux limit with a neutrino propagation limit

Barranco, J.; Miranda, O. G.; Moura, C. A.; Rashba, T. I.; Rossi-Torres, F.

doi:10.1088/1475-7516/2011/10/007

Cited by 18 publications

(21 citation statements)

References 87 publications

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“…In the present Universe, the interaction of neutrinos with DM can dissipate neutrinos and hence suppress the flux of neutrinos at Earth. This attenuation once was considered to explain the suppression of high-energy neutrino flux [16]. This suppression also can be used to constrain the interaction of neutrinos and DM, especially for ultralight scalar dark matter [16,17].…”

Section: Pacs Numbersmentioning

confidence: 99%

Constraining dark matter-neutrino interactions with IceCube-170922A

2019

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Astrophysical neutrinos travel long distances from their sources to the Earth traversing dark matter halos of clusters of galaxies and that of our own Milky Way. The interaction of neutrinos with dark matter may affect the flux of neutrinos. The recent multimessenger observation of a high energy neutrino, IceCube-170922A, can give a robust upper bound σ/M dm 5.1 × 10 −23 cm 2 / GeV on the interaction between neutrino and dark matter at a neutrino energy of 290 TeV allowing 90% suppression. Combining the constraints from CMB and LSS at different neutrino energies, we can constrain models of dark matter-neutrino interactions. PACS numbers:Introduction. Since neutrinos interact only weakly with matter they can propagate cosmological distances without attenuation and are considered to be ideal messenger particles to uncover the mysteries of distant astrophysical objects. The recent discovery of a very high energy neutrino, IceCube-170922A, was followed by multimessenger observations including gamma-ray, X-ray, optical, and radio. Through these accompanying observations, the source of this 290 TeV neutrino could be identified as a flaring blazar located at a distance of 1421 Mpc [1].New interactions of neutrinos with matter in the Universe may affect the propagation of neutrinos by reducing the flux or changing neutrino flavors [2,3]. The nondiagonal or nonuniversal matter potential generated by new interactions modifies the neutrino oscillation behavior and could result in deviation from the present expectations. Strong constraints can be obtained on nonstandard interactions from atmospheric data [4], at the production, propagation and detection [5], and from neutrino experiments [6].Neutrinos could have interactions with dark matter and observations of distant sources are ideal to probe such processes. Dark matter composes 26% of the massenergy content of the present Universe and spreads all over the Universe, with more localization near galaxies and clusters of galaxies. Even though the simplest cosmological Λ CDM model assumes only gravitationally interacting dark matter, many models of particles physics predict nongravitational interactions of dark matter with standard model particles as well as self interaction between dark matter [7].The interaction of neutrinos with dark matter, denoted DM, has been considered in cosmology and neutrino observations. Before the last scattering of CMB, the interactions of DM beyond gravity leads to a suppression of

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Section: Pacs Numbersmentioning

confidence: 99%

Constraining dark matter-neutrino interactions with IceCube-170922A

2019

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“…Allowed decay width (GeV) Maximum value of g τ τ → ν τ W −( * ) Z 3.8 × 10 −15 0.04 Issues of neutrino flux suppression [21][22][23], flavour conversion [24,25] and cosmological bounds [17][18][19][20] in presence of neutrino-DM interaction have been addressed in the literature.…”

Section: Processmentioning

confidence: 99%

Interactions of astrophysical neutrinos with dark matter: a model building perspective

Pandey

Karmakar

Rakshit

2019

J. High Energ. Phys.

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We explore the possibility that high energy astrophysical neutrinos can interact with the dark matter on their way to Earth. Keeping in mind that new physics might leave its signature at such energies, we have considered all possible topologies for effective interactions between neutrino and dark matter. Building models, that give rise to a significant flux suppression of astrophysical neutrinos at Earth, is rather difficult. We present a Z -mediated model in this context. Encompassing a large variety of models, a wide range of dark matter masses from 10 −21 eV up to a TeV, this study aims at highlighting the challenges one encounters in such a model building endeavour after satisfying various cosmological constraints, collider search limits and electroweak precision measurements. *

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“…Thus the larger the average number of neutrino scatterings, the more the assumed source flux must be shifted to higher energies to fit the observed diffuse background. Effects of neutrino -dark matter scattering on the shape of the spectrum of high-energy neutrinos observed by IceCube have been discussed previously in [35,36,[43][44][45][46][47][48][49].…”

Section: General Considerationsmentioning

confidence: 99%

Neutrino-dark matter scattering and coincident detections of UHE neutrinos with EM sources

Koren

2019

J. Cosmol. Astropart. Phys.

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The scattering of neutrinos off dark matter can induce time delays in their propagation compared to that of photons, which would wash out correlations between ultrahigh-energy neutrinos and electromagnetic observations of their sources -while preserving the observed diffuse neutrino flux. This may explain the significant discrepancy between predictions of neutrino fluxes from gamma ray bursts and the lack of neutrinos correlated with EM observations of GRBs. Conversely, the detection of an UHE neutrino in association with a source provides a strong constraint on such interactions. We consider an effective model of dark photon dark matter interacting with neutrinos which exhibits this effect.

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Confusing the extragalactic neutrino flux limit with a neutrino propagation limit

Cited by 18 publications

References 87 publications

Constraining dark matter-neutrino interactions with IceCube-170922A

Constraining dark matter-neutrino interactions with IceCube-170922A

Interactions of astrophysical neutrinos with dark matter: a model building perspective

Neutrino-dark matter scattering and coincident detections of UHE neutrinos with EM sources

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