Lepton-flavor violation and muon (g−2) in the flavor-dependent U(1)F model
Abstract
Lepton flavor violation (LFV) processes are forbidden in the standard model (SM), hence the observation of LFV transitions would represent a clear signal of new physics beyond the SM. In this work, we investigate the muon anomalous magnetic dipole moments (MDM) and LFV processes lj−→ li−γ and lj−→ li−li−li+ in the extension of the SM with U(1)F local gauge symmetry (FDM). The muon anomalous MDM is one of the most precisely measured quantities in particle physics, which can be used to constrain the contributions from new couplings in the FDM. The newly incorporated U(1)F charges are correlated with the flavor properties of fermions, hence the newly added Yukawa couplings make contributions to these LFV processes. Considering the latest experimental constraints on the muon anomalous MDM, the new interactions in the FDM can make significant contributions to the LFV processes lj−→ li−γ and lj−→ li−li−li+, the predicted branching ratios can well reach the future experimental sensitivity.
Versions
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BibTeX
@misc{peng2026leptonflavor,
title = {{Lepton-flavor violation and muon $(g-2)$ in the flavor-dependent $U(1)_F$ model}},
author = {Yu-Ju Peng and Feng-Yan Niu and Qi-Zhen Qin and Zhan Cao and Jin-Lei Yang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2609.02483},
eprint = {2609.02483},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.02483},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Lepton-flavor violation and muon (g−2) in the flavor-dependent U(1)_F model
AU - Yu-Ju Peng
AU - Feng-Yan Niu
AU - Qi-Zhen Qin
AU - Zhan Cao
AU - Jin-Lei Yang
PY - 2026
DA - 2026/10/19
PB - arXiv
DO - 10.48550/arxiv.2609.02483
UR - https://arxiv.org/abs/2609.02483
AB - Lepton flavor violation (LFV) processes are forbidden in the standard model (SM), hence the observation of LFV transitions would represent a clear signal of new physics beyond the SM. In this work, we investigate the muon anomalous magnetic dipole moments (MDM) and LFV processes l_j^−→ l_i^−γ and l_j^−→ l_i^−l_i^−l_i^+ in the extension of the SM with U(1)_F local gauge symmetry (FDM). The muon anomalous MDM is one of the most precisely measured quantities in particle physics, which can be used to constrain the contributions from new couplings in the FDM. The newly incorporated U(1)_F charges are correlated with the flavor properties of fermions, hence the newly added Yukawa couplings make contributions to these LFV processes. Considering the latest experimental constraints on the muon anomalous MDM, the new interactions in the FDM can make significant contributions to the LFV processes l_j^−→ l_i^−γ and l_j^−→ l_i^−l_i^−l_i^+, the predicted branching ratios can well reach the future experimental sensitivity.
ER -