Constraining the new contributions to electron $g-2$ in a radiative neutrino mass model
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| Format: | Preprint |
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2025
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| author | Dirgantara, Bayu Julio, J. |
| author_facet | Dirgantara, Bayu Julio, J. |
| contents | 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 $μ\to eγ$ 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 $τ\to eγ$ and $τ\to 3e$, are predicted to be within the sensitivities of next-generation experiments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_08504 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Constraining the new contributions to electron $g-2$ in a radiative neutrino mass model Dirgantara, Bayu Julio, J. High Energy Physics - Phenomenology 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 $μ\to eγ$ 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 $τ\to eγ$ and $τ\to 3e$, are predicted to be within the sensitivities of next-generation experiments. |
| title | Constraining the new contributions to electron $g-2$ in a radiative neutrino mass model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.08504 |