# Discovery potential of multi-ton xenon detectors in neutrino electromagnetic properties

## TL;DR

Next-generation multi-ton xenon detectors can significantly improve constraints on solar neutrino electromagnetic properties, especially milli-charge and magnetic moments, through precise neutrino-atom scattering measurements.

## Contribution

This study applies advanced atomic many-body calculations to evaluate the discovery potential of xenon detectors for neutrino electromagnetic moments, providing new sensitivity estimates.

## Key findings

- XENON-1T can double the current milli-charge constraint.
- LZ and DARWIN can improve bounds by factors of 7 and 2 respectively.
- Lowering the electron recoil threshold to 0.5 keV could enhance sensitivity by a factor of 10^3.

## Abstract

Next-generation xenon detectors with multi-ton-year exposure are powerful direct probes of dark matter candidates, in particular the favorite weakly-interacting massive particles. Coupled with the features of low thresholds and backgrounds, they are also excellent telescopes of solar neutrinos. In this paper, we study the discovery potential of ton-scale xenon detectors in electromagnetic moments of solar neutrinos. Relevant neutrino-atom scattering processes are calculated by applying a state-of-the-arts atomic many-body method--relativistic random phase approximation (RRPA). Limits on these moments are derived from existing data and estimated with future experiment specifications. With one ton-year exposure, XENON-1T can improve the effective milli-charge constraint by a factor two. With LZ and DARWIN, the projected improvement on the solar neutrino effective milli-charge(magnetic moment) is around 7(2) times smaller than the current bound. If LZ can keep the same background level and push the electron recoil threshold to 0.5 keV, the projected improvement on milli-charge(magnetic moment) is about 10(3) times smaller than the current bound.