Nonunitary neutrino mixing in short and long-baseline experiments

Nonunitary neutrino mixing in the light sector is a direct consequence of type-I seesaw mass models. In these models, described by submatrix full lepton matrix and, then, it not unitary general. consequence, oscillations are characterized additional parameters, including new sources $CP$ violation. Here we perform combined analysis short and long-baseline oscillation data this extended scenario. We did find significant deviation from mixing, complementary sets have been used to constrain nonunitarity parameters. also found that T2K NOvA tension determination Dirac $CP$-phase alleviated context nonunitary mixing.