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Neutrinophilic Dark Matter in the epoch of IceCube and Fermi-LAT

Neutrinophilic Dark Matter in the epoch of IceCube and Fermi-LAT
Neutrinophilic Dark Matter in the epoch of IceCube and Fermi-LAT

The recent observation of the blazar TXS 0506+056 suggests the presence of a hard power-law component in the extraterrestrial TeV-PeV neutrino flux, in agreement with the IceCube analysis on the 8-year through-going muon neutrinos from the Northern Sky. This is slightly in tension with the soft power-law neutrino flux deduced by the IceCube 6-year High Energy Starting Events data. A possible solution to such a puzzle is assuming a two-component neutrino flux. In this paper, we focus on the case where, in addition to an astrophysical power-law, the second component is a pure neutrino line produced by decaying Dark Matter particles. We investigate how to realize a neutrinophilic decaying Dark Matter in an extension of the Standard Model. The main features of the model are: i) the requirement of a new symmetry like a global U(1) charge; ii) the Dirac nature of active neutrinos; iii) a low-reheating temperature of the Universe of about 1 TeV . We perform a likelihood statistical analysis to fit the IceCube data according to the present Fermi-LAT gamma-rays constraints.

dark matter theory, neutrino astronomy, ultra high energy photons and neutrinos
1475-7516
Chianese, Marco
73113e4b-5eb5-4cdc-831b-90f4678588d6
Miele, Gennaro
50522539-425a-47c3-b2f1-55716d99dab1
Morisi, Stefano
e6035691-8e75-47af-89bd-08c376c00b93
Peinado, Eduardo
ec8195a5-3df1-4e70-9164-fcec71076fb1
Chianese, Marco
73113e4b-5eb5-4cdc-831b-90f4678588d6
Miele, Gennaro
50522539-425a-47c3-b2f1-55716d99dab1
Morisi, Stefano
e6035691-8e75-47af-89bd-08c376c00b93
Peinado, Eduardo
ec8195a5-3df1-4e70-9164-fcec71076fb1

Chianese, Marco, Miele, Gennaro, Morisi, Stefano and Peinado, Eduardo (2018) Neutrinophilic Dark Matter in the epoch of IceCube and Fermi-LAT. Journal of Cosmology and Astroparticle Physics, 2018 (12), [016]. (doi:10.1088/1475-7516/2018/12/016).

Record type: Article

Abstract

The recent observation of the blazar TXS 0506+056 suggests the presence of a hard power-law component in the extraterrestrial TeV-PeV neutrino flux, in agreement with the IceCube analysis on the 8-year through-going muon neutrinos from the Northern Sky. This is slightly in tension with the soft power-law neutrino flux deduced by the IceCube 6-year High Energy Starting Events data. A possible solution to such a puzzle is assuming a two-component neutrino flux. In this paper, we focus on the case where, in addition to an astrophysical power-law, the second component is a pure neutrino line produced by decaying Dark Matter particles. We investigate how to realize a neutrinophilic decaying Dark Matter in an extension of the Standard Model. The main features of the model are: i) the requirement of a new symmetry like a global U(1) charge; ii) the Dirac nature of active neutrinos; iii) a low-reheating temperature of the Universe of about 1 TeV . We perform a likelihood statistical analysis to fit the IceCube data according to the present Fermi-LAT gamma-rays constraints.

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More information

Accepted/In Press date: 30 November 2018
e-pub ahead of print date: 11 December 2018
Keywords: dark matter theory, neutrino astronomy, ultra high energy photons and neutrinos

Identifiers

Local EPrints ID: 427616
URI: http://eprints.soton.ac.uk/id/eprint/427616
ISSN: 1475-7516
PURE UUID: e70ae110-dab7-42c7-b71e-c5030f95cc03

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Date deposited: 24 Jan 2019 17:30
Last modified: 17 Mar 2024 12:18

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Contributors

Author: Marco Chianese
Author: Gennaro Miele
Author: Stefano Morisi
Author: Eduardo Peinado

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