NBIA Seminar: Pablo Martínez-Miravé

Neutrino non-standard interactions (NSI) are predicted in many Standard Model extensions, including neutrino mass models. This talk will address two different ways to probe these new interactions between neutrinos and other fermions. In the first place, NSI can modify the propagation of neutrinos in matter. I will show that a combination between solar neutrinos and long or medium baseline reactor experiments is particularly suitable to test this scenario. I will illustrate it with the complementarity between the future experiments JUNO and Hyper-Kamiokande, that will allow to further constrain NSI with quarks. The second part of the talk will be devoted to NSI with electrons and their role in the decoupling of neutrinos from the cosmic plasma. In the presence of such new interactions, the overall picture of neutrino decoupling can be substantially modified. I will compare the bounds expected from forthcoming cosmological data with the existing ones and I will outline the complementarity of both methods.