论文标题
$ s_3 $对称性的三吉格斯 - doublet模型中的两个暗物质候选人
Two dark matter candidates in three-Higgs-doublet models with $S_3$ symmetry
论文作者
论文摘要
具有扩展标量电动扇形的扩展的模型可以在施加基础对称性的基础上具有消失的真空期望值。这样的扩展非常有动力。如果对称性阻止了费米子和其他标量之间的耦合，那么如果满足一些其他标准，这种标量可能会成为可行的暗物质候选者。我们根据特定型号是否可以容纳暗物质候选者的方式，对$ s_3 $ -smmetric的三吉格二键型型号进行了分类，还允许柔软破碎的$ s_3 $ -symmetric starro的潜在术语。 $ s_3 $ - 符合家庭模型的种类由于安排真空期望值的不同可能性而产生。这样的模型可以具有一个或两个消失的真空期望值的真空吸尘器。在我们的研究中，我们假设$ \ mathbb {z} _2 $对称性稳定了暗物质候选人。 $ \ mathbb {z} _2 $对称是$ s_3 $对称的残余，它在自发对称性破裂中幸存下来，而不是叠加在$ s_3 $之上。我们探索两个模型；没有CP违规。这些模型具有一个黑暗和两个主动标量扇区。主动部门在许多方面都表现出色，例如I型两-higgs-doublet模型。在两种情况下，暗物质候选质量与具有三个标量双线的已知（先前研究）模型不同。在详细研究了模型之后，确定与理论和实验约束兼容的参数后，我们发现暗物质候选质量可能在$ [52.5，\，89]〜\ text {gev} $或$ [6.5，\，\，\，44.5]〜\ text {6.5，\，44.5]〜\ text {gev} $ for cp for cp for cp for cp for cp for cp。
Models with an extended scalar electroweak sector can have vanishing vacuum expectation values in a basis where an underlying symmetry is imposed. Such extensions are very well motivated. If a symmetry prevents couplings between fermions and additional scalars, such scalars could become viable dark matter candidates if some additional criteria are satisfied. We catalogue $S_3$-symmetric three-Higgs-doublet models, also allowing for softly broken $S_3$-symmetric scalar potential terms, based on whether a specific model could possibly accommodate a dark matter candidate. The variety of the $S_3$-symmetric family models arises due to different possibilities to arrange vacuum expectation values. Such models can have vacua with one or two vanishing vacuum expectation values. In our study we assume that the dark matter candidate is stabilised by the $\mathbb{Z}_2$ symmetry. The $\mathbb{Z}_2$ symmetry is a remnant of $S_3$ symmetry which survived spontaneous symmetry breaking, and not superimposed over $S_3$. We explore two models; with an without CP violation. These models have a single dark and two active scalar sectors. The active sectors behave in many aspects like a Type-I two-Higgs-doublet model. The dark matter candidate masses, in two cases, are different from the known (previously studied) models with three scalar doublets. After investigating the models in detail, identifying parameters compatible with both theoretical and experimental constraints, we found that the dark matter candidate mass could be within the range of $[52.5,\,89]~\text{GeV}$ or $[6.5,\,44.5]~\text{GeV}$ for a model with CP violation.
