论文标题
$ u（1）_ {l_μ-l_τ} $左右理论的扩展
Neutrino mass, mixing and muon $g-2$ explanation in $U(1)_{L_μ-L_τ}$ extension of left-right theory
论文作者
论文摘要
我们考虑一个测量的$ u（1）_ {l_μ-l_τ} $左右对称理论的扩展，以同时解释中微子质量，混合和muon异常磁矩。我们从$ u（1）_ {l_μ-l_τ} $对称与muons的$ u（1）$的新灯光孔$ z_ {μτ} $的相互作用中获得了很大的贡献，该$可以单独满足MUON $（G-2）$ ANOMALY（$ΔA___$）的当前界限。对$δA_μ$的其他积极贡献来自单封电量的仪表$ W_L $，$ W_R $带有重型中性费米子和带有MUON的中性CP-even标量的相互作用。 $ w_l $与重中微子的相互作用是通过反seesaw机制促进的，该机构允许大型轻质的中微子混合，并解释了我们模型中的中微子质量。质量为几百个GEV的CP量标量也可以满足整个当前的MUON异常结合。结果表明，该模型对$δA_$的贡献很小但不可忽略，从而消除了Muon $（G-2）$异常的理论预测和实验结果的整个偏差。我们简要介绍了一项对对称和不对称的左右对称模型的比较研究，这些模型对$ΔA_μ$的各种贡献。我们还讨论了当左右对称性通过各种标量选择分解为标准模型对称性时，中微子质量的产生如何受到影响。
We consider a gauged $U(1)_{L_μ-L_τ}$ extension of the left-right symmetric theory in order to simultaneously explain neutrino mass, mixing and the muon anomalous magnetic moment. We get sizeable contribution from the interaction of the new light gauge boson $Z_{μτ}$ of the $U(1)_{L_μ-L_τ}$ symmetry with muons which can individually satisfy the current bounds on muon $(g-2)$ anomaly ($Δa_μ$). The other positive contributions to $Δa_μ$ come from the interactions of singly charged gauge bosons $W_L$, $W_R$ with heavy neutral fermions and that of neutral CP-even scalars with muons. The interaction of $W_L$ with heavy neutrino is facilitated by inverse seesaw mechanism which allows large light-heavy neutrino mixing and explains neutrino mass in our model. CP-even scalars with mass around few hundreds GeV can also satisfy the entire current muon anomaly bound. The results show that the model gives a small but non-negligible contribution to $Δa_μ$ thereby eliminating the entire deviation in theoretical prediction and experimental result of muon $(g-2)$ anomaly. We have briefly presented a comparative study for symmetric and asymmetric left-right symmetric model in context of various contribution to $Δa_μ$. We also discuss how the generation of neutrino mass is affected when left-right symmetry breaks down to Standard Model symmetry via various choices of scalars.
