Zee model with flavor dependent global U(1) symmetry
Zee model with flavor dependent global U(1) symmetry
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DOI：
10.1007/jhep10(2019)105
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发表时间：
2019-05
影响因子：
5.4
通讯作者：
Takaaki Nomura;K. Yagyu
中科院分区：
文献类型：
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作者：
Takaaki Nomura;K. Yagyu
我们研究了 Zee 模型的简单扩展，其中原始模型中强加的离散 Z 2 对称性被保留相同粒子含量的全局 U (1) 对称性所取代。由于 U (1) 对称性与风味相关的电荷分配，轻子扇区有一个额外的风味源，违反了与可控结构的汤川相互作用，而夸克扇区则不在树级。我们表明，在 U (1) 对称性的成功电荷分配中，当前的中微子振荡数据可以在轻子风味违反带电轻子衰变的约束下进行解释。在这种情况下，我们发现轻子味道的特征模式违反了额外希格斯玻色子的衰变，这可能是对撞机实验中确凿的证据。
We study a simple extension of the Zee model, in which a discrete Z 2 symmetry imposed in the original model is replaced by a global U (1) symmetry retaining the same particle content. Due to the U (1) symmetry with flavor dependent charge assignments, the lepton sector has an additional source of flavor violating Yukawa interactions with a controllable structure, while the quark sector does not at tree level. We show that current neutrino oscillation data can be explained under constraints from lepton flavor violating decays of charged leptons in a successful charge assignment of the U (1) symmetry. In such scenario, we find a characteristic pattern of lepton flavor violating decays of additional Higgs bosons, which can be a smoking gun signature at collider experiments.