3-4-1-1模型中b \到s \ γ $的辐射衰减研究

Duy Nguyen Tuan, Huong Do Thi
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引用次数: 0

摘要

我们研究了具有任意电荷参数$p,q$的3-4-1-1模型中辐射衰变$b\到$ s \gamma$的分支比。我们证明了新的希格斯玻色子$\mathcal{H}_1^\pm$和新的规范玻色子$W_{13,14}^{\pm p,q}, Z_{2,3}$对这种衰变有贡献。在这些来源中,主要贡献来自单电荷希格斯玻色子的相互作用。如果扩大规范群对称性自发破断到电弱群大约是几个tev,则分支比Br($b\to s \gamma$)和介子混合的预测都符合实验约束。
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Investigation of the radiative decay $b \to s \gamma$ in the 3-4-1-1 model
We investigate the branching ratio of the radiative decay $b\to s \gamma$ in the 3-4-1-1 model with arbitrary charge parameters $p,q$. We show that the new Higgs bosons, $\mathcal{H}_1^\pm$, and the new gauge bosons $W_{13,14 }^{\pm p,q}, Z_{2,3}$ contribute to this decay. Of these sources, the main contribution comes from the interaction of the singly-charged Higgs boson. If the spontaneous breaking of the enlarged gauge group symmetry down to the electroweak group is around a few TeVs, the predictions for the branching ratio Br($b\to s \gamma$) and meson mixing are both consistent with experimental constraints.
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