Non-standard interactions of neutrinos are one of the most popular methods to probe physics beyond the Standard Model in neutrino oscillations. The Standard Model Effective Field Theory (SMEFT) offers a systematic and model-independent framework to study non-standard interactions in a context where the new physics originates from a very high energy.
In this talk, we describe the matching process where the effective field theory describing the low-energy neutrino oscillations and the high-energy SMEFT are connected while taking into account the renormalization group running at different scales. We discuss the applications of this method in a top-down approach using a simplified leptoquark model as an example. Finally, we examine the implications of the recent neutrino oscillation data in the long-baseline and reactor neutrino experiments to the Wilson coefficients and scale of dimension-6 SMEFT operators. We conclude the talk with a brief comment on the future prospects of the field.
With support from FCT through project UIDB/00777/2020