# Solar Neutrino Measurements

## TL;DR

This paper reports recent precise measurements of solar neutrinos from Borexino and SuperK experiments, covering the entire solar neutrino spectrum and providing insights into solar composition and neutrino flux stability.

## Contribution

It presents the first comprehensive measurement of all solar neutrinos in a single detector and offers refined data on neutrino fluxes, including CNO neutrinos, with implications for solar metallicity.

## Key findings

- SuperK achieved <2% precision in 8B neutrino rate
- Borexino measured all neutrino fluxes from the pp chain
- Data weakly favor a high-metallicity Sun

## Abstract

We present the most recent results from the two currently running solar neutrino experiments, Borexino at the Gran Sasso laboratory in Italy and SuperK at Kamioka mine in Japan. SuperK has released the most precise yet measurement of the 8B solar neutrino interaction rate, with a precision better than 2\%, consistent with a constant solar neutrino emission over more than a decade. Borexino has released refined measurements of all neutrinos produced in the pp fusion chain. For the first time, one single detector has measured the entire range of solar neutrinos at once. These new data weakly favor a high-metallicity Sun. Prospects for measuring CNO solar neutrinos with Borexino are discussed, and a brief outlook on the field provided.