Viability of A4, S4 and A5 flavour symmetries in light of the first JUNO result
We update the analysis of the viability of the lepton mixing patterns originating from $A_4$, $S_4$ and $A_5$ discrete flavour symmetries and leading to predictions for the solar neutrino mixing angle, $θ_{12}$. We perform a statistical analysis using as an input (i) the results of the latest global fit to neutrino oscillation data, and (ii) the first JUNO measurement of $\sin^2θ_{12}$. Out of the five (four) cases compatible with the global data at $3σ$ for normal (inverted) neutrino mass ordering, only three (two) cases remain compatible with the global data at the same confidence level after taking into account the JUNO result.
Authors
- A.V. Titov
- S.T. Petcov
Publication Details
- Journal
- Physics Letters B
- Published
- 2026-02-21
- DOI
- https://doi.org/10.1016/j.physletb.2026.140295
- Citations
- 1
- Primary Topic
- Astrophysics and Cosmic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 27.96
Funders
- European Commission
- Ministry of Education, Culture, Sports, Science and Technology
- HORIZON EUROPE Framework Programme