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

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

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article

Viability of A4, S4 and A5 flavour symmetries in light of the first JUNO result

A.V. Titov, S.T. Petcov
1 citations
Physics Letters B
Astrophysics and Cosmic Phenomena
27.96
article

Viability of A4, S4 and A5 flavour symmetries in light of the first JUNO result

A.V. Titov, S.T. Petcov
article en
1 citations

Abstract

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.

Physics Letters BVol. 874
European Commission, Ministry of Education, Culture, Sports, Science and Technology, HORIZON EUROPE Framework Programme
Openalex Percentile: Top 1%
Astrophysics and Cosmic Phenomena
27.96
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