论文标题

中微子的质量和瘦肉模型中的中微子质量和瘦肉模型具有自发损坏的CP

Neutrino mass and leptogenesis in a hybrid seesaw model with a spontaneously broken CP

论文作者

Pramanick, Rohan, Ray, Tirtha Sankar, Shaw, Avirup

论文摘要

我们介绍了一个新型混合框架,结合了I型和II型Seesaw模型,用于中微子质量,其中单线标量表场的复杂真空期望值自发地破坏了CP。使用务实的组织对称性,我们证明了这样的模型可以同时解释中微子振荡数据,并通过瘦素发生产生观察到的重子不对称性。有趣的是,自然选择参数会导致混合的静脉生成情景,该场景由几乎退化的标量三重态和右手单线中微子中微子领域驱动,我们为此提供了详细的定量分析。

We introduce a novel hybrid framework combining type I and type II seesaw models for neutrino mass where a complex vacuum expectation value of a singlet scalar field breaks CP spontaneously. Using pragmatic organizing symmetries we demonstrate that such a model can simultaneously explain the neutrino oscillation data and generate observed baryon asymmetry through leptogenesis. Interestingly, natural choice of parameters leads to a mixed leptogenesis scenario driven by nearly degenerate scalar triplet and right handed singlet neutrino fields for which we present a detailed quantitative analysis.

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