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Constraining the new contributions to electron g−2 in a radiative neutrino mass model

Bayu Dirgantara1,2,* and J. Julio3,†

  • *Contact author: bayudirgantara@unhas.ac.id
  • †Contact author: julio@brin.go.id
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Phys. Rev. D 113, 035017 – Published 17 February, 2026

DOI: https://doi.org/10.1103/ptm1-rmsm

Abstract

We examine electron and muon anomalous magnetic dipole moments within a radiative neutrino mass model featuring TeV-scale scalar leptoquarks S(3,1,−1/3) and R(3,2,1/6). We utilize textures with decoupling electron and muon sectors, so that both electron and muon anomalous magnetic dipole moments could receive internal chiral enhancements from different heavy up-type quarks while in the same time evading the stringent μ→eγ constraint. A successful fit to neutrino oscillation data requires the simultaneous presence of one- and two-loop neutrino mass contributions. This severely constrains the parameter space of the model, which results in a negligible new physics correction to the muon g−2. The electron g−2 discrepancy implied by the rubidium experiment, on the other hand, can be resolved within 2σ uncertainty provided that neutrino mass ordering is inverted. Lepton-flavor-violating tau decay rates, such as τ→eγ and τ→3e, are predicted to be within the sensitivities of next-generation experiments.

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Phys. Rev. D 113, 035017– Published 17 February, 2026
  • Received 30 October 2025
  • Accepted 29 January 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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