The Landscape of CEνNS: Status, Challenges, and Opportunities

• Dimitrios Papoulias (IFIC (CSIC/Valencia U.))

Coherent elastic neutrino–nucleus scattering (CEνNS) is the neutrino process with the largest cross section at low energies, yet it was only observed experimentally in recent years. It has since been measured using neutrinos from pion decay-at-rest sources, nuclear reactors, and the Sun. These results open up new and exciting possibilities for testing the Standard Model (SM) in novel regimes, as well as probing signatures of physics beyond the SM. In this seminar, I will review the current status of CEνNS phenomenology and explore its implications for low-energy electroweak physics. On the SM side, the focus will be on the determination of the weak mixing angle at low momentum transfer and the extraction of neutron distributions in nuclei. In the context of BSM physics, CEvNS data constrains on non-standard neutrino interactions, sterile neutrinos, and neutrino electromagnetic properties, will be discussed. These provide complementary insights alongside other experimental probes.