publication . Article . Preprint . 2018

Probing the sterile neutrino portal to Dark Matter with $γ$ rays

Folgado, Miguel G.; Gómez-Vargas, Germán A.; Rius, Nuria; de Austri, Roberto Ruiz;
Open Access
  • Published: 01 Aug 2018 Journal: Journal of Cosmology and Astroparticle Physics, volume 2,018, pages 2-2 (eissn: 1475-7516, Copyright policy)
  • Publisher: IOP Publishing
Abstract
Sterile neutrinos could provide a link between the Standard Model particles and a dark sector, besides generating active neutrino masses via the seesaw mechanism type I. We show that, if dark matter annihilation into sterile neutrinos determines its observed relic abundance, it is possible to explain the Galactic Center $\gamma$-ray excess reported by the Fermi-LAT Collaboration as due to an astrophysical component plus dark matter annihilations. We observe that sterile neutrino portal to dark matter provides an impressively good fit, with a p-value of 0.78 in the best fit point, to the Galactic Center $\gamma$-ray flux, for DM masses in the range (40-80) GeV an...
Subjects
arXiv: Astrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::ExperimentAstrophysics::Cosmology and Extragalactic AstrophysicsHigh Energy Physics::PhenomenologyAstrophysics::Galaxy Astrophysics
free text keywords: Astronomy and Astrophysics, Physics, Seesaw mechanism, Dark matter halo, Milky Way, Dark matter, Sterile neutrino, Galaxy, Standard Model, Particle physics, Neutrino, High Energy Physics - Phenomenology
Related Organizations
Funded by
EC| InvisiblesPlus
Project
InvisiblesPlus
InvisiblesPlus
  • Funder: European Commission (EC)
  • Project Code: 690575
  • Funding stream: H2020 | MSCA-RISE
,
EC| ELUSIVES
Project
ELUSIVES
The Elusives Enterprise: Asymmetries of the Invisible Universe
  • Funder: European Commission (EC)
  • Project Code: 674896
  • Funding stream: H2020 | MSCA-ITN-ETN
50 references, page 1 of 4

[1] S. Dodelson and L. M. Widrow, Sterile-neutrinos as dark matter, Phys. Rev. Lett. 72 (1994) 17{20, [hep-ph/9303287]. [OpenAIRE]

[2] R. Adhikari et al., A White Paper on keV Sterile Neutrino Dark Matter, Submitted to: White paper (2016) , [1602.04816].

[3] M. Pospelov, A. Ritz and M. B. Voloshin, Secluded WIMP Dark Matter, Phys. Lett. B662 (2008) 53{61, [0711.4866].

[4] M. Escudero, N. Rius and V. Sanz, Sterile neutrino portal to Dark Matter I: The U (1)B L case, JHEP 02 (2017) 045, [1606.01258].

[5] M. Escudero, N. Rius and V. Sanz, Sterile Neutrino portal to Dark Matter II: Exact Dark symmetry, Eur. Phys. J. C77 (2017) 397, [1607.02373]. [OpenAIRE]

[6] B. Batell, T. Han and B. Shams Es Haghi, Indirect Detection of Neutrino Portal Dark Matter, 1704.08708.

[7] R. Allahverdi, Y. Gao, B. Knockel and S. Shalgar, Indirect Signals from Solar Dark Matter Annihilation to Long-lived Right-handed Neutrinos, Phys. Rev. D95 (2017) 075001, [1612.03110]. [OpenAIRE]

[8] L. Goodenough and D. Hooper, Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope, ArXiv e-prints (Oct., 2009) , [0910.2998].

[9] Fermi-LAT collaboration, V. Vitale and A. Morselli, Indirect Search for Dark Matter from the center of the Milky Way with the Fermi-Large Area Telescope, in Fermi gamma-ray space telescope. Proceedings, 2nd Fermi Symposium, Washington, USA, November 2-5, 2009, 2009, 0912.3828, https://inspirehep.net/record/840760/ les/arXiv:0912.3828.pdf.

[10] D. Hooper and L. Goodenough, Dark Matter Annihilation in The Galactic Center As Seen by the Fermi Gamma Ray Space Telescope, Phys. Lett. B697 (2011) 412{428, [1010.2752].

[11] C. Gordon and O. Macias, Dark Matter and Pulsar Model Constraints from Galactic Center Fermi-LAT Gamma Ray Observations, Phys. Rev. D88 (2013) 083521, [1306.5725].

[12] D. Hooper and T. Linden, On The Origin Of The Gamma Rays From The Galactic Center, Phys.Rev. D84 (2011) 123005, [1110.0006].

[13] T. Daylan, D. P. Finkbeiner, D. Hooper, T. Linden, S. K. N. Portillo, N. L. Rodd et al., The characterization of the gamma-ray signal from the central Milky Way: A case for annihilating dark matter, Phys. Dark Univ. 12 (2016) 1{23, [1402.6703].

[14] A. Boyarsky, D. Malyshev and O. Ruchayskiy, A comment on the emission from the Galactic Center as seen by the Fermi telescope, Physics Letters B 705 (Nov., 2011) 165{169, [1012.5839].

[15] F. Calore, I. Cholis and C. Weniger, Background model systematics for the Fermi GeV excess, JCAP 3 (Mar., 2015) 038, [1409.0042]. [OpenAIRE]

50 references, page 1 of 4
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