Speaker
Description
Neutrinos provide a uniquely clean and sensitive probe of the Standard Model (SM), enabling precision tests of electroweak interactions in regimes complementary to high-energy colliders. Their weakly interacting nature, combined with the growing diversity of experimental data, makes neutrino scattering a powerful tool to explore both standard and non-standard properties.
In this talk, I present an updated global analysis of elastic neutrino–electron scattering and coherent elastic neutrino–nucleus scattering (CEνNS), combining data from reactor, accelerator, and solar neutrino experiments within a unified framework. Particular emphasis is placed on the increasing role of CEνNS, including measurements sensitive to reactor antineutrinos as well as the latest updated results from the COHERENT program, incorporating new data from germanium detectors. Complementary constraints from direct dark matter detection experiments, such as LZ, XENONnT, and PandaX, are also included, exploiting their sensitivity to low-energy solar neutrinos.
This global, neutrino-driven approach enables a robust and self-consistent determination of key observables. We derive updated and competitive constraints on effective neutrino charge radii and other key observables, highlighting the strong complementarity between neutrino–electron scattering, CEνNS, and dark matter detectors. At the same time, we extract precise values of the neutrino–electron neutral current couplings, accounting for radiative corrections and momentum-transfer effects.
Our results demonstrate that current neutrino data already provide a competitive and largely self-contained test of the Standard Model. I will highlight how recent advances, particularly in CEνNS and low-threshold detectors, are driving this progress, and discuss the prospects for further improvements with upcoming measurements.