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arXiv · 2406.01142

Mapping the sources of CP violation in neutrino oscillations from the seesaw mechanism

Zhi-zhong Xing
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Abstract

We present the first complete calculation of the Jarlskog invariant, a working measure of the strength of CP violation in the flavor oscillations of three light neutrino species, with the help of a full Euler-like block parametrization of the flavor structure in the canonical seesaw mechanism. We find that this invariant depends on 240 linear combinations of the 6 original phase parameters that are responsible for CP violation in the decays of three heavy Majorana neutrinos in 27 linear combinations as a whole, and thus provides the first model-independent connection between the microscopic and macroscopic matter-antimatter asymmetries.

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Zhi-zhong Xing. 2024-06-03. Mapping the sources of CP violation in neutrino oscillations from the seesaw mechanism. https://arxiv.org/abs/2406.01142

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