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arXiv 2104.02730hep-ph
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在一个具有反跷跷板的扩展2HDM中费米子质量和混合、暗物质、稀薄发生和$g-2$ μ子异常

Fermion masses and mixings, dark matter, leptogenesis and $g-2$ muon anomaly in an extended 2HDM with inverse seesaw

A. E. Cárcamo Hernández, Catalina Espinoza, Juan Carlos Gómez-Izquierdo, Myriam Mondragón

摘要:

我们提出了一个预测性的$Q_4$味2HDM模型,其中标量扇区通过包含几个规范单重标量而扩大,费米子扇区通过包含右手Majorana中微子而扩大。在我们的模型中,$Q_4$族对称性补充了几个辅助的循环对称性,其自发破缺产生SM带电费米子质量和夸克混合角的观察模式。由于保留了$Z_2$对称性,轻活性中微子质量在一个环水平上由反跷跷板机制产生。我们的模型成功地再现了测得的暗物质遗迹丰度,并与直接检测约$\sim$ 6.3 TeV的DM候选人的质量的限制是一致的。此外,我们的模型也与轻子和重子的不对称性以及μ子的反常磁矩相一致

英文摘要:

We propose a predictive $Q_4$ flavored 2HDM model, where the scalar sector is enlarged by the inclusion of several gauge singlet scalars and the fermion sector by the inclusion of right handed Majorana neutrinos. In our model, the $Q_4$ family symmetry is supplemented by several auxiliary cyclic symmetries, whose spontaneous breaking produces the observed pattern of SM charged fermion masses and quark mixing angles. The light active neutrino masses are generated from an inverse seesaw mechanism at one loop level thanks to a remnant preserved $Z_2$ symmetry. Our model succesfully reproduces the measured dark matter relic abundance and is consistent with direct detection constraints for masses of the DM candidate around $\sim$ 6.3 TeV. Furthermore, our model is also consistent with the lepton and baryon asymmetries of the Universe as well as with the muon anomalous magnetic moment

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