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

2022/02/02 by Becerra-García, Eduardo, Pérez-Lorenzana, Abdel
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2202.00864

Abstract

Observed reactor and atmospheric neutrino oscillation mixing values appear to be related to the neutrino scale ratio √Δm²_sol/Δ²_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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