论文标题
Scotogogogogon模型中的不对称介体
Asymmetric Mediator in Scotogenic Model
论文作者
论文摘要
Scotogenic模型是带有Z_2对称性的标准模型（SM），并添加了Z_2奇数右手Majorana中微子和SU（2）_L Doublet标量字段。我们已经通过在暗物质中起作用的附加Z_2奇数单元标量字段扩展了原始的Scotogenic模型。在我们的模型中，Lepton和Z_2 Odd Doublet标量的不对称是通过CP侵略的右中微子衰减而产生的。尽管前者通过SPHALERON过程转化为Baryon不对称性，但后者通过SU（2）_L Doublet标量的衰减重归为DM密度，该衰减称为“不对称介体”。通过这种方式，我们提供了一个扩展的Scotogenic模型，该模型可以预测Baryon和暗物质的能量密度为相同的数量级，并且还解释了低能中微子的质量和混合角度。
The scotogenic model is the Standard Model (SM) with Z_2 symmetry and the addition of Z_2 odd right-handed Majorana neutrinos and SU(2)_L doublet scalar fields. We have extended the original scotogenic model by an additional Z_2 odd singlet scalar field that plays a role in dark matter. In our model, the asymmetries of the lepton and Z_2 odd doublet scalar are simultaneously produced through CP-violating right-handed neutrino decays. While the former is converted into baryon asymmetry through the sphaleron process, the latter is relaid to the DM density through the decay of SU(2)_L doublet scalar that is named "asymmetric mediator". In this way, we provide an extended scotogenic model that predicts the energy densities of baryon and dark matter being in the same order of magnitude, and also explains the low-energy neutrino masses and mixing angles.
