论文标题
S.M.A.S.H.E.D。：标准型号轴锯式Higgs通货膨胀扩展了Dirac Neutminos
S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
论文作者
论文摘要
受S.M.A.S.H.的启发框架我们构建了一个模型，该模型解决了强大的CP问题，轴突暗物质，通货膨胀和狄拉克中微子肿块以及瘦素发生。该模型仅具有两个动态尺度，即SM破坏量表$ v_h $和peccei Quinn（PQ）破坏量表$v_σ$。我们以通常的KSVZ方式引入了类似矢量的夸克，以实现强大CP问题的PQ机制。要通过尺寸六算子缩放为$m_ν\ sim v_h^3 /v_σ^2 $生成中微子质量，我们添加了沉重的三重态和双重lept子，它们在sm下类似于pq对称性下的手性。该模型不含宇宙域壁问题，并预测了光子耦合的轴，该轴是比常规DFSZ和KSVZ模型大的数量级。因此，我们的场景可以被当前和下一代轴突实验（例如器官或Madmax）探测并有可能排除。此外，我们从数值上证明我们的构建可以通过实现dirac-leptogenesiscenes方案的版本来产生观察到的重子不对称性。由于我们的中微子质量机制，我们发现与典型的SEESAW场景相比，三胞胎费米衰变中的不对称性也可以显着增强六个数量级。顺便说一句，我们注意到，带有多个衰减模式的衰减dirac fermion包含\ exquote {quasi最佳效率} -scenario先前在上下文衰减标量的三胞胎中遇到的所有必要成分。右手中微子和轴对$Δn_\ text {eff} $的影响是估计的，位于当前边界内。
Inspired by the S.M.A.S.H. framework we construct a model that addresses the strong CP problem, axion dark matter, inflation and Dirac neutrino masses as well as leptogenesis. The model possesses only two dynamical scales, namely the SM breaking scale $v_H$ and the Peccei Quinn (PQ) breaking scale $v_σ$. We introduce heavy vector-like quarks in the usual KSVZ fashion to implement the PQ mechanism for the strong CP problem. To generate neutrino masses via a dimension six operator scaling as $m_ν\sim v_H^3 / v_σ^2$ we add heavy triplet and doublet leptons, which are vector-like under the SM but chiral under PQ symmetry. The model is free from the cosmological domain wall problem and predicts an axion to photon coupling which is about an order of magnitude larger than in conventional DFSZ and KSVZ models. Thus our scenario can be probed and potentially excluded by current and next generation axion experiments such as ORGAN or MADMAX. In addition we numerically demonstrate that our construction can generate the observed baryon asymmetry by realizing a version of the Dirac-Leptogenesis scenario. As a consequence of our neutrino mass mechanism we find that the asymmetry in triplet fermion decays can also be significantly enhanced by up to six orders of magnitude when compared to typical Seesaw scenarios without needing to invoke a resonant enhancement. In passing we note that a decaying Dirac fermion with multiple decay modes contains all the necessary ingredients required for the \enquote{quasi optimal efficiency}-scenario previously encountered in the context decaying scalar triplets. The impact of the right handed neutrinos and the axion on $ΔN_\text{eff}$ is estimated and lies within current bounds.
