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Author  |
Herrero-Brocal, A.; Vicente, A. |
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Title |
Minimal Majorana neutrino mass models |
Type |
Journal Article |
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Year |
2026 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
01 |
Issue |
1 |
Pages |
035 - 25pp |
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Keywords |
Lepton Flavour Violation (charged); Neutrino Mixing; Sterile or Heavy Neutrinos; Baryon/Lepton Number Violation |
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Abstract |
We present an extension of the Casas-Ibarra parametrization that applies to all possible Majorana neutrino mass models. This framework allows us to systematically identify minimal models, defined as those with the smallest number of free parameters. We further analyze the phenomenologically relevant combination of the Yukawa matrix, y dagger y, and show that in certain scenarios it exhibits an unexpected reduction in the number of free parameters, depending on just one real degree of freedom. Finally, the application of our results is illustrated in specific models, which can be tested or falsified due to their definite experimental predictions in heavy neutrino and charged lepton flavor violating decays. |
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Address |
[Herrero-Brocal, Antonio; Vicente, Avelino] CSIC Univ Valencia, Inst Fis Corpuscular, Parc Cientif Paterna,C Catedrat Jose Beltran 2, E-46980 Paterna, Valencia, Spain, Email: antonio.herrero@ific.uv.es; |
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Publisher |
Springer |
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Language |
English |
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Notes |
WOS:001655049000012 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
7022 |
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