Probing neutrino magnetic moments and the XENON1T excess with coherent elastic solar neutrino scattering

TL;DR

This paper investigates how future dark matter detectors can probe neutrino magnetic moments and potentially explain the Xenon1T excess through coherent elastic neutrino-nucleus scattering, focusing on active and sterile neutrino scenarios.

Contribution

It provides a detailed analysis of the sensitivity of future experiments to neutrino magnetic moments, especially highlighting the potential to test sterile neutrino explanations for the Xenon1T excess.

Findings

Sensitivity to active neutrino magnetic moments is around 10^{-10} to 10^{-11} μ_B.

Future detection could effectively test sterile neutrino magnetic moments below 10 MeV.

The study offers a combined framework for both active and sterile neutrino magnetic moments.

Abstract

The detection potential of the active neutrino magnetic moment ($\nu_{a}$MM) and the active sterile transition magnetic moment ($\nu_{s}$MM) of the solar neutrino CE$\nu$NS process in future Dark Matter direct detection experiments is studied and compared with the respective allowed range to explain the Xenon1T excess. We find that the sensitivity to the $\nu_{a}$MM approaches to the level between $10^{-10}\mu_B$ and $10^{-11}\mu_B$, which is dominantly limited by the detection threshold. On the other hand, the future solar neutrino CE$\nu$NS detection would be powerful in probing the $\nu_{s}$MM for the sterile neutrino mass below 10 MeV, which could unambiguously test the $\nu_{s}$MM explanation of the Xenon1T excess. The sensitivity in the general framework with both $\nu_{a}$MM and $\nu_{s}$MM contributions is also derived.