Dirac CP phases in a 3 + 1 neutrino scenario with $$\mu -\tau $$ μ - τ symmetry
Abstract A sterile neutrino in the $$3+1$$ 3 + 1 scheme, where the sterile accounts for neutrino anomalies not explained solely by the weak active neutrinos, arises as a natural source for the breaking of the $$\mu -\tau $$ μ - τ symmetry suggested by oscillation neutrino data. We explore the predic...
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| Auteurs principaux: | , |
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| Format: | article |
| Langue: | EN |
| Publié: |
SpringerOpen
2021
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| Accès en ligne: | https://doaj.org/article/6f82a986b05b4c66996e09c1ebb79b21 |
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| Résumé: | Abstract A sterile neutrino in the $$3+1$$ 3 + 1 scheme, where the sterile accounts for neutrino anomalies not explained solely by the weak active neutrinos, arises as a natural source for the breaking of the $$\mu -\tau $$ μ - τ symmetry suggested by oscillation neutrino data. We explore the predictions for the Dirac CP phases in this scenario, with and without sterile neutrino decay, and show that current limits on $$\delta _{CP}$$ δ CP suggest a normal hierarchy and a lightest neutrino scale below 0.1 eV as the most plausible explanation for that, when Majorana phases are null. Other Dirac phases turn out to be non zero as well. |
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