Heavy right-handed neutrino dark matter and PeV neutrinos at IceCube
- Max-Planck-Institut für Kernphysik,Saupfercheckweg 1, D-69117 Heidelberg (Germany)
- Astrophysics Science Division, NASA Goddard Space Flight Center,Greenbelt, MD 20771 (United States)
- Maryland Center for Fundamental Physics, Department of Physics, University of Maryland,College Park, MD 20742 (United States)
- Service de Physique Théorique, Université Libre de Bruxelles,Boulevard du Triomphe, CP225, 1050 Brussels (Belgium)
We discuss a simple non-supersymmetric model based on the electroweak gauge group SU(2){sub L}×SU(2){sup ′}×U(1){sub B−L} where the lightest of the right-handed neutrinos, which are part of the leptonic doublet of SU(2){sup ′}, play the role of a long-lived unstable dark matter with mass in the multi-PeV range. We use a resonant s-channel annihilation to obtain the correct thermal relic density and relax the unitarity bound on dark matter mass. In this model, there exists a 3-body dark matter decay mode producing tau leptons and neutrinos, which could be the source for the PeV cascade events observed in the IceCube experiment. The model can be tested with more precise flavor information of the highest-energy neutrino events in future data.
- Sponsoring Organization:
- SCOAP3, CERN, Geneva (Switzerland)
- OSTI ID:
- 22572131
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 08; Other Information: PUBLISHER-ID: JCAP08(2016)034; OAI: oai:repo.scoap3.org:16827; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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