arXiv subjects

Wen-Hui Zhang

Publications and source records attributed to Wen-Hui Zhang.

5 recordsLinked to original sources

arXiv2026

The Muon and Tau Electric Dipole Moments in the B-L Supersymmetric Standard Model

Recently proposed experiments are expected to significantly improve the measurement sensitivities of the electric dipole moments (EDMs) of muon ($d_μ$) and tau ($d_τ$). Given that theoretical predictions for $d_μ$ and $d_τ$ typically surpass those for the electron EDM, this work focuses on studying the contributions from the CP-violating (CPV) effects in the B-L supersymmetric (SUSY) standard model (B-LSSM) to $d_μ$ and $d_τ$. After considering the corrections from some two-loop diagrams, the contributions in the B-LSSM to the EDMs of charged leptons are presented analytically in general forms. The numerical results show that the traditional $μ$-term in most SUSY models makes dominant contributions to $d_μ$ and $d_τ$, while the B-LSSM specific CPV parameters also induce significant effects. It is found that across a substantial region of the B-LSSM parameter space, $d_μ$ falls well within the projected sensitivity at Phase II of the proposed experiment, and $|d_τ|$ can reach about $10^{-21}e\cdot\text{cm}$.

hep-ph↗

arXiv2026

The Higgs boson in the CP-violating NB-LSSM

This study investigates the lightest and second-lightest Higgs bosons at around 95 GeV (which is only a hypothetical scenario) and 125 GeV respectively within the CP-violating next to minimum B-L supersymmetric model(NB-LSSM). In the NB-LSSM, the CP violation in the Higgs potential leads to the mixing mass terms between the CP-even and CP-odd Higgs fields. Thus, one has to consider a $(10 \times 10)$-dimensional mass matrix for the neutral Higgs boson. These potential mixing effects may lead to drastic variations on the neutral Higgs boson masses. Besides, the neutral Higgs bosons predicted in the NB-LSSM may strongly mix with one another, thereby significantly modifying the couplings of the Higgs bosons to the fermions or gauge bosons. It is found that the specific parameters $g_{YB}$, $\tanβ$, $T_κ$, $T_λ, \cdot\cdot\cdot$ and CP-violating phases $θ_{1,2,3,4,6,7,8}$ in the NB-LSSM affect the theoretical predictions on the Higgs boson mass and corresponding signal strengthes significantly. And the theoretical predictions on the signal strengthes of SM-like Higgs decay channels and excess signals at around 95 GeV are fitted well to the observed experimental data.

hep-ph↗

arXiv2026

The 95 GeV and 125 GeV Higgs Excesses in the Left-Right Supersymmetric Standard Model

This study investigates the excesses observed around 95 GeV in diphoton and $b\bar{b}$ experiments within the framework of the Left-Right Supersymmetric Model (LRSSM). Considering the one-loop and two-loop effective potential corrections to the Higgs masses, the model is able to describe the experimentally observed $μ(h_{95})_{γγ}$ and $μ(h_{95})_{b\bar{b}}$ signal strengths. In addition, we also present the impacts of the LRSSM-specific parameters $\tanβ_{R}$, $v_{R}$ and $v_{S}$ on the theoretical predictions of the signal strengths for the 95 GeV and 125 GeV neutral Higgs both.

hep-ph↗

arXiv2025

Explaining the possible 95 GeV excesses in the B-L symmetric SSM

Motivated by the excesses around 95 GeV observed in the diphoton and $b\bar b$ data, this study focuses on investigating these two excesses within the framework of the $B-L$ supersymmetric model (B-LSSM), due to the existence of two light Higgs bosons in the model. Considering the two-loop effective potential corrections, it is found that the B-LSSM is hard to fit the 125 GeV Higgs signal strengths and the two excesses around 95 GeV in the experimental $1σ$ intervals, while the model can reproduce them in the experimental $2σ$ intervals simultaneously. And considering the two loop effective potential corrections to the squared Higgs mass matrix is important to account for the mixing effects among Higgs sector.

hep-ph↗

arXiv2022

The lepton flavor violating decays of vector mesons in the MRSSM

Recently several new bounds of the lepton flavor violating decays of the neutral vector mesons $J/ψ$ and $Υ(nS)$ are reported from the experiments. In the work, we analyze these processes in the scenario of the minimal R-symmetric supersymmetric standard model by means of the effective Lagrangian method. The predicted branching ratios are affected by the mass insertion parameters $δ^{ij}$ and the contributions from different parts are comparable. Taking account of the constraints on the mass insertion parameters from the experiments, the branching ratios for the most promising processes $Υ(nS)\rightarrow lτ$ are predicted to be ten orders of magnitude smaller than the present experimental bounds.

hep-ph↗