Neutrino Charge Radii from COHERENT Elastic Neutrino-Nucleus Scattering

TL;DR

This paper uses COHERENT experiment data to set new bounds on neutrino charge radii, including for the first time constraints on transition charge radii beyond the Standard Model, highlighting the experiment's potential to probe neutrino properties.

Contribution

The study provides the first bounds on neutrino transition charge radii and demonstrates the importance of time information in COHERENT data analysis for neutrino property constraints.

Findings

Time information improves bounds on neutrino charge radii.

First constraints on neutrino transition charge radii.

COHERENT data constrains neutrino electromagnetic properties.

Abstract

Coherent elastic neutrino-nucleus scattering is a powerful probe of neutrino properties, in particular of the neutrino charge radii. We present the bounds on the neutrino charge radii obtained from the analysis of the data of the COHERENT experiment. We show that the time information of the COHERENT data allows us to restrict the allowed ranges of the neutrino charge radii. We also obtained for the first time bounds on the neutrino transition charge radii, which are quantities beyond the Standard Model.