论文标题
3-3-1-1模型中FCNC得出的物理约束
Physical constraints derived from FCNC in the 3-3-1-1 model
论文作者
论文摘要
我们研究了$ \ text {3-3-1-1} $模型中与FCNC相关的几种现象。阐明了从量规和希格斯扇区的树级FCNC的来源。最严格的介子振荡实验限制了树级的FCNC。新物理量表上的下限比以前的$ \ text {m} _ {\ text {new}}> 12 $ \ text {tev}更加紧密。在此界限下，树级的fcncs对$ \ text {br}（b_s \rightArolWμ^+μ^ - ）$，$ \ text {br}（b \ rightArrow k^{**}μ^+μ^ - ^ - ）$和$ \ text $ text { k^{+}μ^{+}μ^{ - }）$。辐射衰减$ b \ rightarrowsγ$的分支比通过带有带电的Higgs中介的图表来增强$ \ frac {v} {u} $。相比之下，新量规玻色子的带电电流显着有助于衰减过程$μ\ rightarroweγ$。
We investigate several phenomena related to FCNCs in the $\text{3-3-1-1}$ model. The sources of FCNCs at the tree-level from both the gauge and Higgs sectors are clarified. Experiments on the oscillation of mesons most stringently constrain the tree-level FCNCs. The lower bound on the new physics scale is imposed more tightly than in the previous, $\text{M}_{\text{new}}>12 $ \text{TeV}. Under this bound, the tree-level FCNCs make a negligible contribution to the $\text{Br}(B_s \rightarrow μ^+ μ^-)$, $\text{Br}(B \rightarrow K^{*} μ^+ μ^-)$ and $\text{Br}(B^{+}\rightarrow K^{+}μ^{+}μ^{-})$. The branching ratio of radiative decay $b \rightarrow s γ$ is enhanced by the ratio $\frac{v}{u}$ via diagrams with the charged Higgs mediation. In contrast, the charged currents of new gauge bosons significantly contribute to the decay process $μ\rightarrow e γ$.
