Probing Neutrino Dipole Portal at COHERENT Experiment

TL;DR

This paper analyzes COHERENT experiment data to constrain the neutrino dipole portal, specifically the transition magnetic moment between standard model and sterile neutrinos, across a broad mass range.

Contribution

It provides the first comprehensive constraints on the neutrino dipole portal using recent COHERENT data, exploring sterile neutrino masses from 10 keV to 40 MeV.

Findings

Transition magnetic moment constraints established for sterile neutrino masses 10 keV to 40 MeV.

First analysis of COHERENT data to probe neutrino dipole portal.

Limits improve understanding of neutrino properties beyond the standard model.

Abstract

Motivated by the first observation of coherent-elastic neutrino-nucleus scattering at the COHERENT experiment, we confront the neutrino dipole portal giving rise to the transition of the standard model neutrinos to sterile neutrinos with the recently released CENNS 10 data from the liquid argon as well as the CsI data of the COHERENT experiment. Performing statistical analysis of those data, we show how the transition magnetic moment can be constrained for the range of the sterile neutrino mass between 10 keV and 40 MeV.