Dark Matter Stability from residual flavour symmetries
Abstract
We propose a model-independent framework in which Dark Matter stability emerges naturally from residual discrete ℤN symmetries left unbroken by the spontaneous breaking of continuous flavour symmetries, both Abelian and non-Abelian. No ad hoc stabilizing symmetry is required, as Dark Matter stability is an inherent consequence of the underlying flavour dynamics. As an explicit example, we construct a prototype model based on a SU(2)F ⊗ U(1)F Froggatt-Nielsen symmetry, which successfully reproduces the observed charged lepton mass spectrum and the PMNS mixing matrix, while identifying the lightest sterile neutrino as a stable Dark Matter candidate. Furthermore, we study the Dark Matter phenomenology within our model in the freeze-in regime, including production channels mediated by higher-dimensional operators suppressed by the cutoff scale Λ. Our analysis shows that continuous flavour symmetries can provide a unified, self-consistent framework addressing both the flavour puzzle and the origin, stability, and production of Dark Matter.
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BibTeX
@misc{landini2026dark,
title = {{Dark Matter Stability from residual flavour symmetries}},
author = {Giacomo Landini and Simone Marciano and Federico Mescia},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.17210},
eprint = {2610.17210},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.17210},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Dark Matter Stability from residual flavour symmetries
AU - Giacomo Landini
AU - Simone Marciano
AU - Federico Mescia
PY - 2026
DA - 2026/10/12
PB - arXiv
DO - 10.48550/arxiv.2610.17210
UR - https://arxiv.org/abs/2610.17210
AB - We propose a model-independent framework in which Dark Matter stability emerges naturally from residual discrete ℤ_N symmetries left unbroken by the spontaneous breaking of continuous flavour symmetries, both Abelian and non-Abelian. No ad hoc stabilizing symmetry is required, as Dark Matter stability is an inherent consequence of the underlying flavour dynamics. As an explicit example, we construct a prototype model based on a SU(2)_F ⊗ U(1)_F Froggatt-Nielsen symmetry, which successfully reproduces the observed charged lepton mass spectrum and the PMNS mixing matrix, while identifying the lightest sterile neutrino as a stable Dark Matter candidate. Furthermore, we study the Dark Matter phenomenology within our model in the freeze-in regime, including production channels mediated by higher-dimensional operators suppressed by the cutoff scale Λ. Our analysis shows that continuous flavour symmetries can provide a unified, self-consistent framework addressing both the flavour puzzle and the origin, stability, and production of Dark Matter.
ER -