The quest for neutrinoless double beta decay: Pseudo-Dirac, Majorana and sterile neutrinos

Abstract

In this paper we analyze the neutrinoless double beta decay predictions in some scenarios with admixture of pseudo-Dirac and Majorana neutrinos in the 3 and 3+1 neutrino frameworks. We found that some of the cases can be falsifiable in near-term and future generations of neutrinoless double beta decay experiments even for the normal neutrino mass hierarchy. In the 3+1 framework we consider the sterile neutrino with a mass of the order of 1 eV. The complementarity between cosmological constraints and the future sensitivity for the next generations of the neutrinoless double beta decay searches is exploited.

arXiv comment10 pages, 40 figures, added references

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• Neutrinoless Double-Beta Decay: a Probe of Physics Beyond the Standard Model
• Status of Light Sterile Neutrino Searches
• Light sterile neutrinos
• Lepton Number Violation and `Diracness' of massive neutrinos composed of Majorana states
• Light Sterile Neutrinos: Status and Perspectives
• Predictions for Neutrinoless Double-Beta Decay in the 3+1 Sterile Neutrino Scenario
• Double beta decay and neutrino mass models
• Non-zero ${\theta }_{13}$ with Unbroken $\mu -\tau$ Symmetry of the Active Neutrino Mass Matrix in the Presence of a Light Sterile Neutrino
• Light sterile neutrino sensitivity of 163Ho experiments
• Oscillations Beyond Three-Neutrino Mixing