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arXiv · hep-ph/0209017

Unitarity Quadrangles of Four Neutrino Mixing

Wan-lei Guo·Zhi-zhong Xing
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Abstract

We present a classification of the unitarity quadrangles in the four-neutrino mixing scheme. We find that there are totally thirty-six distinct topologies among twelve different unitarity quadrangles. Concise relations are established between the areas of those unitarity quadrangles and the rephasing invariants of CP and $T$ violation.

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Wan-lei Guo, Zhi-zhong Xing. 2002-10-10. Unitarity Quadrangles of Four Neutrino Mixing. https://doi.org/10.1103/physrevd.66.097302

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