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arXiv 2202.00864hep-ph
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中微子振荡混合与太阳中微子尺度的微小性有关吗?

Are neutrino oscillation mixings linked to the smallness of solar neutrino scale?

Eduardo Becerra-García, Abdel Pérez-Lorenzana

摘要:

观察到的反应堆和大气中的中微子振荡混合值似乎与中微子尺度比$\sqrt{Δm^2_{sol}/Δ^2_{ATM}}$的方式,这表明中微子质量矩阵可以扩展为一个幂级数,通过使用这个比例作为小参数。这种方法提供了一种简单而自然的方式来揭示中微子质量项之间的内部层次结构,这相当于也解释了太阳振荡混合以及太阳振荡尺度。我们探讨了一类实现这种情况下的质量矩阵纹理,正常和倒置的中微子质量层次,以及CP破坏和重整化标度下的稳定性。

英文摘要:

Observed reactor and atmospheric neutrino oscillation mixing values appear to be related to the neutrino scale ratio $\sqrt{Δm^2_{sol}/Δ^2_{ATM}}$ in a way that suggest that the neutrino mass matrix can be expanded as a power series by using this ratio as the smallness parameter. This approach provides a simple and natural way to expose the inner hierarchies among neutrino mass terms, which amounts to also explain the solar oscillation mixing as well as solar oscillation scale. We explore a class of mass matrix textures that realize this scenario, for both normal and inverted neutrino mass hierarchies, as well as CP violation and their stability under renormalization scaling.

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