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arXiv · 2510.23703

Anarchic neutrinos from flavor deconstruction: phenomenology of the lepton sector

Gino Isidori·Paride Paradisi·Andrea Sainaghi·Nudzeim Selimovic
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Abstract

We investigate the neutrino sector in the framework of flavor deconstruction with an inverse-seesaw realization. This setup naturally links the hierarchical charged-fermion masses to the anarchic pattern of light-neutrino mixing. We determine the viable parameter space consistent with oscillation data and study the phenomenology of heavy neutral leptons (HNL) and lepton-flavor-violating (LFV) processes. Current bounds from direct HNL searches and LFV decays constrain the right-handed neutrino scale to a few TeV, while future $\mu \to e$ experiments will probe most of the region with $\Lambda \lesssim 10~\text{TeV}$. Among possible realizations, models deconstructing $\mathrm{SU}(2)_\mathrm{L} \times \mathrm{U}(1)_\mathrm{B-L}$ or $\mathrm{SU}(2)_\mathrm{L} \times \mathrm{U}(1)_\mathrm{R} \times \mathrm{U}(1)_\mathrm{B-L}$ are those allowing the lowest deconstruction scale.

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Gino Isidori, Paride Paradisi, Andrea Sainaghi, Nudzeim Selimovic. 2025-10-27. Anarchic neutrinos from flavor deconstruction: phenomenology of the lepton sector. https://arxiv.org/abs/2510.23703

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