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arXiv · hep-ph/0703098

CP-violation from non-unitary leptonic mixing

E. Fernandez-Martinez·M. B. Gavela·J. Lopez-Pavon·O. Yasuda
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Abstract

A low-energy non-unitary leptonic mixing matrix is a generic effect of a large class of theories accounting for neutrino masses. It is shown how the extra CP-odd phases of a general non-unitary matrix allow for sizeable CP-asymmetries in channels other than those dominant in the standard unitary case. The $ν_μ\to ν_τ$ channel turns out to be an excellent tool to further constrain moduli and phases. Furthermore, we clarify the relationship between our approach and the so-called "non-standard neutrino interactions" schemes: the sensitivities explored here apply as well to such constructions.

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E. Fernandez-Martinez, M. B. Gavela, J. Lopez-Pavon, O. Yasuda. 2007-06-25. CP-violation from non-unitary leptonic mixing. https://doi.org/10.1016/j.physletb.2007.03.069

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