Aligned Zee-Grimus-Neufeld model for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mo stretchy="false">(</mml:mo> <mml:mi>g</mml:mi> <mml:mo>−</mml:mo> <mml:mn>2</mml:mn> <mml:msub> <mml:mo stretchy="false">)</mml:mo
The recent result of the Fermilab Muon g-2 experiment is still in conflict with the standard model (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 <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>g</a:mi> <a:mo>−</a:mo> <a:mn>2</a:mn> </a:math> 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 right-handed neutrino. Neutrino masses will be generated by a combination of mechanisms: the 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 <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mo stretchy="false">(</c:mo> <c:mi>g</c:mi> <c:mo>−</c:mo> <c:mn>2</c:mn> <c:msub> <c:mo stretchy="false">)</c:mo> <c:mi>μ</c:mi> </c:msub> </c:math> , the Cabibbo angle anomaly, and the <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"> <g:mi>W</g:mi> </g:math> mass deviation, while avoiding dangerous charged lepton flavor violation.
Authors
- Adriano Cherchiglia (ORCID: https://orcid.org/0000-0002-2457-1671)
- C. C. Nishi (ORCID: https://orcid.org/0000-0002-8109-4509)
- G. De Conto (ORCID: https://orcid.org/0000-0002-7373-625X)
- R. E. A. Bringas (ORCID: https://orcid.org/0009-0003-1134-6277)
Institutions
- Universidade Estadual de Campinas (UNICAMP) (BR)
- Universidade Federal do ABC (BR)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2025-10-01
- DOI
- https://doi.org/10.1103/t5jf-fb3q
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00