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An A4 model for lepton masses and mixings

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arxiv 0910.4389 v2 pith:W6LCLEME submitted 2009-10-22 hep-ph

classification hep-ph
keywords modelangleleptonmassesa4-invariantariseatmosphericbelong
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We study an extension of the standard model based on the flavor symmetry A4 only. Neutrino Majorana mass terms arise from dimension five operator and charged lepton masses from renormalizable Yukawa couplings. We introduce three Higgs doublets that belong to one triplet irreducible representation of A4. We study the most general A4-invariant scalar potential and the phenomenological consequences of the model. We find that the reactor angle could be as large as 0.03, while the atmospheric mixing angle is close to maximal.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Leptonic Flavor from Modular $A_4$: UV Mediators and SMEFT Realizations

    hep-ph 2025-05 conditional novelty 6.0 of 10

    This paper classifies lepton-coupled UV mediators under modular A4 symmetry and derives experimental lower bounds on their masses from lepton flavor observables.

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