Probing Lepton Flavor Models at Future Neutrino Experiments

TL;DR

Future neutrino experiments like ESSnuSB, T2HK, DUNE, and JUNO will critically test and constrain lepton flavor models based on non-Abelian discrete symmetries through high-precision measurements.

Contribution

This paper demonstrates how upcoming neutrino experiments can collectively narrow down the large set of viable lepton flavor models based on non-Abelian discrete symmetries.

Findings

Complementarity of experiments enhances model discrimination

High-precision measurements constrain flavor symmetry models

Future data will significantly reduce viable model space

Abstract

Non-Abelian discrete symmetries provide an interesting opportunity to address the flavor puzzle in the lepton sector. However, the number of currently viable models based on such symmetries is rather large. High-precision measurements of the leptonic mixing parameters by future neutrino experiments, including ESSnuSB, T2HK, DUNE, and JUNO, will be crucial to test such models. We show that the complementarity among these experiments offers a powerful tool for narrowing down this broad class of lepton flavor models.