Minimal Zee model for lepton g-2 and W -mass shifts

Abstract

We present a unique Yukawa structure of the Zee model that can accommodate neutrino oscillation data, solves the muon g-2 problem, and explains the recent W-boson mass measurement. Our Yukawa structure is minimal in the sense that it contains the least possible number of parameters. In this minimal scenario, neutrino masses are quasidegenerate and are compatible with both normal and inverted orderings. The mixing angle θ23 is predicted to lie in the second (first) octant for normal (inverted) ordering. In both cases, the CP violating phase is close to 3π/2. The minimal texture also predicts a large branching fraction of the heavy neutral Higgs boson into a pair of electron and muon. © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license.