Probing Neutrino Charge Radii with Coherent Elastic Solar Neutrino-Nucleus Scattering

Abstract

Coherent elastic neutrino–nucleus scattering (CEνNS), as a low-energy process within the Standard Model
(SM), provides a powerful probe of neutrino electromagnetic properties, in particular the neutrino charge
radius. Owing to its relatively large cross section, CEνNS is especially sensitive to such subleading effects.
In this work, we investigate the impact of the neutrino charge radius on CEνNS induced by solar neutrinos.

We calculate its contribution to the CEνNS cross section and derive constraints on the neutrino charge ra-
dius by analyzing current data from the CDEX-10 experiment. Our results are then compared with existing

bounds reported in previous studies.