Speaker
Description
Coherent elastic neutrino–nucleus scattering (CEνNS) provides a sensitive probe of neutrino electromagnetic properties thanks to its enhancement at low momentum transfer. Reactor antineutrinos, with typical energies of a few MeV, are particularly well suited to explore electromagnetic contributions that grow at low nuclear recoil energies.
In this work, we present a phenomenological study of the sensitivity of reactor-based CEνNS experiments to the effective neutrino magnetic moment, electric millicharge, anapole moment and charge radius. We compute the modified differential cross section including both the Standard Model weak interaction and additional electromagnetic terms, emphasizing the enhancement of magnetic-moment effects in the low-recoil region. Using realistic reactor spectra and low-threshold Ar, Ge and Si detectors, we generate recoil spectra and extract projected constraints through a χ² analysis.
Our results show that next-generation low-threshold CEνNS measurements at reactors can substantially improve laboratory bounds on neutrino electromagnetic properties, offering a complementary probe of physics beyond the Standard Model.