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Lepton number violation and ‘Diracness’ of massive neutrinos composed of Majorana states
Majorana neutrinos naturally lead to a lepton number violation (LNV). A superposition of Majorana states can mimic Dirac-type neutrinos, leading to lepton number conservation. Using the example of specific observables related to high- and low-energy processes, we demonstrate how the strength of LNV...
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Published in: | Physical review. D 2016-06, Vol.93 (11), Article 113017 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Majorana neutrinos naturally lead to a lepton number violation (LNV). A superposition of Majorana states can mimic Dirac-type neutrinos, leading to lepton number conservation. Using the example of specific observables related to high- and low-energy processes, we demonstrate how the strength of LNV correlates with neutrino parameters, such as CP phases, flavor mixings, and mass ratios. We stress the coaction of low- and high-energy studies for quantitatively testing phenomenological models. Second, we conclude that in order to fully study the role of heavy neutrinos in the search for new physics signals, a departure from trivial scenarios assuming degeneracy in mass and no flavor mixing or CP phases becomes necessary for a proper physical analysis. |
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ISSN: | 2470-0010 2470-0029 |
DOI: | 10.1103/PhysRevD.93.113017 |