Ning-Yu Zhu | Searcharxiv

arXiv2024

Higgs boson decays $h\rightarrow MZ$ in the TNMSSM

We study the SM-like Higgs boson decays $h\rightarrow MZ$ in the Triplet extended NMSSM (TNMSSM),where M is a vector meson ($ρ$, $ω$, $ϕ$, $J/Ψ$, $Υ$). Compared to the minimal supersymmetric standard model (MSSM), the TNMSSM includes two new SU(2) triplets with hypercharge $\pm 1$ and a SM gauge singlet which are coupled to each other. The indirect contributions to the decays $h \rightarrow MZ$ are produced from the effective $hγZ$ vertex, and they are more important than the direct contributions. The results of this work would encourage a detection on $h \rightarrow Zγ$ at the future high energy colliders for exploring new physics beyond the SM.

hep-ph↗

arXiv2023

B meson rare decays in the TNMSSM

We investigate the two loop electroweak corrections to B meson rare decays $\bar B\rightarrow X_sγ$ and $B_s^0\rightarrow μ^+μ^-$ in the minimal supersymmetry standard model (MSSM) extension with two triplets and one singlet (TNMSSM). The new particle contents and interactions in the TNMSSM can affect the theoretical predictions of the branching ratios ${\rm Br}(\bar B\rightarrow X_sγ)$ and ${\rm Br}(B_s^0\rightarrow μ^+μ^-)$, and the corrections from two loop diagrams to the process $\bar B\rightarrow X_sγ$ can reach around $4\%$. Considering the latest experimental measurements, the numerical results of ${\rm Br}(\bar B\rightarrow X_sγ)$ and ${\rm Br}(B_s^0\rightarrow μ^+μ^-)$ in the TNMSSM are presented and analyzed. It is found that the results in the TNMSSM can fit the updated experimental data well and the new parameters $T_λ,\;κ,\;λ$ affect the theoretical predictions of ${\rm Br}(\bar B\rightarrow X_sγ)$ and ${\rm Br}(B_s^0\rightarrow μ^+μ^-)$ obviously.

hep-ph↗