English

Lepton Flavor Physics in the flipped 3-3-1-1 Model: Non-Universality and Violation

High Energy Physics - Phenomenology 2025-12-03 v1

Abstract

We investigate the flavor violation (FV) of Z decays to leptons at tree level and flavor conserving Z decays to leptons in the frame work of the flipped SU(3)CSU(3)LU(1)XU(1)N SU(3)_C\otimes SU(3)_L \otimes U(1)_X\otimes U(1)_N,(F3311) model. In addition, we analyze the processes liljγl_i\rightarrow l_j \gamma and the leptonic three-body decay. Using the experimental bounds on these decays we set the constraint on sinϕ\sin \phi which represents the mixing between Z-Z' boson. The most stringent limits arises from μeγ\mu \rightarrow e \gamma decay where sinϕO(103)\sin \phi \sim \mathcal{ O}(10^{-3}). The leptonic three-body decay set lower bound on the mass of the new neural gauge boson mZ3.2TeVm_{Z'} \geq 3.2TeV. Using the LUX-ZEPLIN (LZ) experiment data we set bounds to the mass of the dark matter candidates. Subsequently, we investigate the lepton non-universality in B decays within the F3311F3311 model by calculating the generic one-loop contribution to the process uidjebνˉau_i\rightarrow d_j e_b \bar{\nu}_a in the unitary gauge as well as numerical evaluating the branching ratio RD,RD(),R(Xc)R_D, R_{D^{(*)}},R(X_c). We demonstrate that the F3311F3311 model can address the 3.3σ3.3 \sigma discrepancies between Standard Model and experimental data. To reaffirm our results, we also analyze the dud \to u transitions and sus\to u transitions. These two transitions also give consistent result with experiment data. Combine all experiment dat a we obtain the operating region for the mass of the model specifically mE[6.5,9]TeVm_E \in [6.5, 9 ]TeV, mQ[6,11]TeVm_Q \in [6,11]TeV and the dark matter candidate mξ[1.5,2]TeVm_\xi \in [1.5,2 ]TeV.

Keywords

Cite

@article{arxiv.2512.02703,
  title  = {Lepton Flavor Physics in the flipped 3-3-1-1 Model: Non-Universality and Violation},
  author = {D. T. Huong and V. H. Binh and N. T. Huong and H. T. Hung and Duong Van Loi and D. T. Binh},
  journal= {arXiv preprint arXiv:2512.02703},
  year   = {2025}
}