论文标题
比例不变的3-3-1-1型号与$ b-l $对称性
Scale-invariant 3-3-1-1 model with $B-L$ symmetry
论文作者
论文摘要
Motivated by a possible interplay between the mechanism of dynamical symmetry breaking and the seesaw mechanism for generating fermion masses, we present a scale-invariant model that extends the gauge symmetry of the Standard Model electroweak sector to SU(3)$_L\otimes$U(1)$_X\otimes$U(1)$_N$, with a built-in $B-L$ symmetry.该模型基于已知的3-3-1模型的对称结构，因此，它将三个观察到的fermion世代的数量与量规异常的取消联系起来。考虑到最小的标量场多重组，通过Coleman-Weinberg机制触发了对称性破裂。我们建立了施加共同效率标准的树级标量电势的稳定条件，并使用吉尔德纳·韦恩伯格（Gildener-Weinberg）的方法计算一个具有多个标量场时的一环有效电位。随着添加矢量费用，标量单元的真空期望值以$ 10^3 $ tev的价格获得质量，$ b-l $ symemertry会导致fermion质量矩阵的质地，从而实现了中微子和夸克的瑟索机制。特别是，这些机制可以部分解释夸克的质量层次结构。 Once the breakdown of the SU(3)$_L$ symmetry is supposed to occur around 10 TeV, the model also predicts new particles with TeV-scale masses, such as a neutral scalar, $H_{1}$, a charged scalar, $H^\pm$, and the gauge bosons $Z^{\prime}$, $W^{\prime\pm}$ and $Y^0$, that could使用高亮度LHC搜索。
Motivated by a possible interplay between the mechanism of dynamical symmetry breaking and the seesaw mechanism for generating fermion masses, we present a scale-invariant model that extends the gauge symmetry of the Standard Model electroweak sector to SU(3)$_L\otimes$U(1)$_X\otimes$U(1)$_N$, with a built-in $B-L$ symmetry. The model is based on the symmetry structure of the known 3-3-1 models and, thus, it relates the number of the three observed fermion generations with the cancellation of gauge anomalies. Symmetry breaking is triggered via the Coleman-Weinberg mechanism taking into account a minimal set of scalar field multiplets. We establish the stability conditions for the tree-level scalar potential imposing the copositivity criteria and use the method of Gildener-Weinberg for computing the one-loop effective potential when one has multiple scalar fields. With the addition of vectorial fermions, getting their mass mainly through the vacuum expectation value of scalar singlets at $10^3$ TeV, the $B-L$ symmetry leads to textures for the fermion mass matrices, allowing seesaw mechanisms for neutrinos and quarks to take place. In particular, these mechanisms could partly explain the mass hierarchies of the quarks. Once the breakdown of the SU(3)$_L$ symmetry is supposed to occur around 10 TeV, the model also predicts new particles with TeV-scale masses, such as a neutral scalar, $H_{1}$, a charged scalar, $H^\pm$, and the gauge bosons $Z^{\prime}$, $W^{\prime\pm}$ and $Y^0$, that could be searched with the high-luminosity LHC.
