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Title: Unifying leptogenesis, dark matter and high-energy neutrinos with right-handed neutrino mixing via Higgs portal

Abstract

We revisit a model in which neutrino masses and mixing are described by a two right-handed (RH) neutrino seesaw scenario, implying a strictly hierarchical light neutrino spectrum. A third decoupled RH neutrino, N{sub DM} with mass M{sub DM}, plays the role of cold dark matter (DM) and is produced by the mixing with a source RH neutrino, N{sub S} with mass M{sub S}, induced by Higgs portal interactions. The same interactions are also responsible for N{sub DM} decays. We discuss in detail the constraints coming from DM abundance and stability conditions showing that in the hierarchical case, for M{sub DM}≫M{sub S}, there is an allowed window on M{sub DM} values necessarily implying a contribution, from DM decays, to the high-energy neutrino flux recently detected by IceCube. We also show how the model can explain the matter-antimatter asymmetry of the Universe via leptogenesis in the quasi-degenerate limit. In this case, the DM mass should be within the range 300 GeV ≲M{sub S}

Authors:
;  [1];  [2]
  1. Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ (United Kingdom)
  2. Instituto de Física Corpuscular (IFIC), CSIC-Universitat de València,Apartado de Correos 22085, E-46071 Valencia (Spain)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572191
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 11; Other Information: PUBLISHER-ID: JCAP11(2016)044; OAI: oai:repo.scoap3.org:17996; 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)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMOLOGY; DECOUPLING; GEV RANGE 100-1000; HIGGS BOSONS; HIGGS MODEL; NEUTRINO MIXING ANGLE; NONLUMINOUS MATTER; PARTICLE DECAY; PARTICLE PRODUCTION; REST MASS; UNIVERSE; ICECUBE NEUTRINO DETECTOR; NEUTRINO DETECTORS

Citation Formats

Bari, Pasquale Di, Ludl, Patrick Otto, and Palomares-Ruiz, Sergio. Unifying leptogenesis, dark matter and high-energy neutrinos with right-handed neutrino mixing via Higgs portal. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/11/044.
Bari, Pasquale Di, Ludl, Patrick Otto, & Palomares-Ruiz, Sergio. Unifying leptogenesis, dark matter and high-energy neutrinos with right-handed neutrino mixing via Higgs portal. United States. doi:10.1088/1475-7516/2016/11/044.
Bari, Pasquale Di, Ludl, Patrick Otto, and Palomares-Ruiz, Sergio. Mon . "Unifying leptogenesis, dark matter and high-energy neutrinos with right-handed neutrino mixing via Higgs portal". United States. doi:10.1088/1475-7516/2016/11/044.
@article{osti_22572191,
title = {Unifying leptogenesis, dark matter and high-energy neutrinos with right-handed neutrino mixing via Higgs portal},
author = {Bari, Pasquale Di and Ludl, Patrick Otto and Palomares-Ruiz, Sergio},
abstractNote = {We revisit a model in which neutrino masses and mixing are described by a two right-handed (RH) neutrino seesaw scenario, implying a strictly hierarchical light neutrino spectrum. A third decoupled RH neutrino, N{sub DM} with mass M{sub DM}, plays the role of cold dark matter (DM) and is produced by the mixing with a source RH neutrino, N{sub S} with mass M{sub S}, induced by Higgs portal interactions. The same interactions are also responsible for N{sub DM} decays. We discuss in detail the constraints coming from DM abundance and stability conditions showing that in the hierarchical case, for M{sub DM}≫M{sub S}, there is an allowed window on M{sub DM} values necessarily implying a contribution, from DM decays, to the high-energy neutrino flux recently detected by IceCube. We also show how the model can explain the matter-antimatter asymmetry of the Universe via leptogenesis in the quasi-degenerate limit. In this case, the DM mass should be within the range 300 GeV ≲M{sub S}},
doi = {10.1088/1475-7516/2016/11/044},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 11,
volume = 2016,
place = {United States},
year = {Mon Nov 21 00:00:00 EST 2016},
month = {Mon Nov 21 00:00:00 EST 2016}
}