# Nonstandard interactions in solar neutrino oscillations with Hyper-Kamiokande and JUNO

## TL;DR

This paper investigates how nonstandard neutrino interactions could explain discrepancies in solar neutrino measurements and proposes that Hyper-Kamiokande and JUNO can confirm these interactions through specific neutrino data analyses.

## Contribution

It demonstrates that combined data from Hyper-Kamiokande and JUNO can conclusively identify nonstandard neutrino interactions affecting solar neutrino oscillations.

## Key findings

- Zenith angle distribution at Hyper-Kamiokande can confirm discrepancies.
- Energy spectrum at JUNO can detect new neutrino interactions.
- Potential to resolve existing measurement discrepancies.

## Abstract

Measurements of the solar neutrino mass-squared difference from KamLAND and solar neutrino data are somewhat discrepant, perhaps due to nonstandard neutrino interactions in matter. We show that the zenith angle distribution of solar neutrinos at Hyper-Kamiokande and the energy spectrum of reactor antineutrinos at JUNO can conclusively confirm the discrepancy and detect new neutrino interactions.