English

Aligned Zee-Grimus-Neufeld model for $(g-2)_\mu$

High Energy Physics - Phenomenology 2025-10-29 v2

Abstract

The recent result of the Fermilab Muon g-2 experiment is still in conflict with the SM prediction if dispersive methods are used as input for the hadronic vacuum polarization. We seek models where the same set of mediators around the weak scale or above contribute to neutrino masses and to the muon g2g-2 through a chiral enhanced contribution. As family lepton number violation is inherent to the former, non-negligible charged lepton flavor violation will be induced. We arrive at the following field content additional to the SM: one Higgs doublet, one singly charged scalar and one righthanded neutrino. Neutrino masses will be generated by a combination of mechanisms: tree-level seesaw, Zee mechanism and Grimus-Neufeld mechanism while lepton flavor violation will be minimized by considering Yukawa aligned Higgs doublets. The setting is flexible enough to account for (g2)μ(g-2)_\mu, the Cabibbo angle anomaly and the WW mass deviation while avoiding dangerous CLFV.

Keywords

Cite

@article{arxiv.2506.22249,
  title  = {Aligned Zee-Grimus-Neufeld model for $(g-2)_\mu$},
  author = {R. E. A. Bringas and A. L. Cherchiglia and G. De Conto and C. C. Nishi},
  journal= {arXiv preprint arXiv:2506.22249},
  year   = {2025}
}

Comments

Version accepted for publication at PRD