Viability of $A_4$, $S_4$ and $A_5$ Flavour Symmetries in Light of the First JUNO Result

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, ${\theta }_{12}$. 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 ${\sin }^2{\theta }_{12}$. Out of the five (four) cases compatible with the global data at $3\sigma$ 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.

arXiv comment13 pages, 3 figures, 2 tables; statistical analysis slightly improved; Fig. 3 with likelihood profiles for ${\sin }^2{\theta }_{23}$ and corresponding discussion added; several comments and references added; conclusions unchanged; to appear in PLB

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Cited by in corpus (1)

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