论文标题
调味的扭曲轴
Flavoured Warped Axion
论文作者
论文摘要
我们考虑了DFSZ轴上模型的5D扩展，该模型既解决轴突质量和费米亚质量层次结构问题，并预测了依赖性的，依赖性的，偏离的轴支轴突纤维耦合。该轴是在U（1）$ _ {pq} $对称性下自发断裂的5D复合标量场的一部分，并且对在UV边界上的显式PQ破裂不敏感。散装标准模型费米子与两个可以定位在紫外线边界上或在散装中传播以解释费米子质量和混合的Higgs双重峰相互作用。当希格斯双峰位于紫外线边界上时，它们会在费米子和轴突之间诱导风味对角线耦合。然而，当希格斯双重速度在整体中繁殖时，轴突和费米昂的重叠会产生风味的脱节耦合。这些夸克和Lepton领域的这些偏离耦合的有效尺度可能会小至$ 10^{11} $ GEV，因此将在将来的Precision风味实验中进行探测。
We consider a 5D extension of the DFSZ axion model that addresses both the axion quality and fermion mass hierarchy problems, and predicts flavour-dependent, off-diagonal axion-fermion couplings. The axion is part of a 5D complex scalar field charged under a U(1)$_{PQ}$ symmetry that is spontaneously broken in the bulk, and is insensitive to explicit PQ breaking on the UV boundary. Bulk Standard Model fermions interact with two Higgs doublets that can be localized on the UV boundary or propagate in the bulk to explain the fermion masses and mixings. When the Higgs doublets are localized on the UV boundary, they induce flavour diagonal couplings between the fermions and the axion. However, when the Higgs doublets propagate in the bulk, the overlap of the axion and fermion profiles generates flavour off-diagonal couplings. The effective scale of these off-diagonal couplings in both the quark and lepton sectors can be as small as $10^{11}$ GeV, and therefore will be probed in future precision flavour experiments.
