2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/191564Some theories of new physics accounting for neutrino masses can give rise to a low-energy non-unitary leptonic mixing matrix. It is shown that the CP-asymmetries in the $ν_μ\to ν_τ$ channel are an excellent probe of such new physics. In adition, we clarify the relationship betweeen our framework and the so called "non-standard neutrino interactions" scenarios: the sensitivities explored here apply as well to such constructions, except for extremely fine-tuned cancellations.3 pages, 2 eps figures, based on talk given at NuFact07, Okayama, Japan, 6-11 August 2007; prepared using LaTeX package for publication in the AIP Conference ProceedingsHigh Energy Physics - Phenomenologytext