标题： 反质量层次来自一个带味道的轴子-中微子模型 显示英文标题

标题： Inverted mass hierarchy from a flavored axion-neutrino model

摘要： 结合KSVZ轴子模型和I型跷跷板机制，我们构建了一个最小的带味轴子模型，该模型可以影响中微子质量矩阵。 这个最小模型需要一个与味相关的PQ电荷分配以及两个额外的标准模型（SM）单态标量，它们生成特定的轻子质量矩阵模式，从而产生一个特定的马约拉纳中微子质量矩阵纹理。 结合$\theta _{13}$远小于其他混合角度的事实，这种纹理预测了中微子质量的倒置层次结构，其中$17\lesssim m_1/m_3\lesssim 44$，以及标准模型单态标量的两个真空期望值之间存在层次结构。 我们还研究了该模型中轴子与轻子之间的耦合。 特别是，轴子-中微子耦合可能对中微子振荡产生潜在影响。 显示英文摘要

摘要： Combining the KSVZ axion model and the type-I seesaw mechanism, we construct a minimal flavored axion model that can affect the neutrino mass matrix. This minimal model requires a flavor dependent PQ charge assignment and two additional standard model (SM) singlet scalars which generate specific patterns of lepton mass matrices, yielding a particular texture of Majorana neutrino mass matrix. Combined with fact that $\theta _{13}$ is much smaller than the other mixing angles, this texture predicts an Inverted Hierarchy of neutrino masses with $17\lesssim m_1/m_3\lesssim 44$, and a hierarchy between the two VEVs of SM-singlet scalars. We also examine the couplings between the axion and the leptons in this model. Especially, the axion-neutrino couplings have the potential effect on neutrino oscillation.