Effects of BSM models at future long baseline experiments

The standard three-neutrino oscillation framework seems to be rather established; however, the percentage level of the precision on the mixing parameters still leaves room for effects not described by the standard physics. Future long baseline (LBL) accelerator experiments will play an important role in the search for new physics effects in neutrino oscillations. Indeed, such experiments will be capable of looking at different oscillation channels and will be able to observe deviation from the standard 3ν framework at near and far detectors. In our work we explore the performances of the DUNE and T2HKK in constraining different BSM models. In particular, we study the effects of the possible Non-Unitarity (NU) of the PMNS matrix at the detectors of both experiments. We show, for example, the correlations between the standard mixing parameters and the NU ones; we also consider the role of the DUNE ντ sample on the new physics constraints. Furthermore, we explore the performances of DUNE in searching for hints of the presence of Non-Standard-Interactions (NSI) using CP-asymmetries.