New Results on Solar Neutrinos

TL;DR

This paper reviews solar neutrino experiments and analyses, confirming neutrino flavor change and agreement with solar models, while emphasizing future precision measurements of neutrino properties.

Contribution

It provides a comprehensive review of global solar neutrino data and analyses, highlighting the current understanding and future prospects in neutrino oscillation research.

Findings

Electron neutrinos change to other active flavors during transit from Sun to Earth.

Total solar neutrino flux agrees with solar model predictions.

Current measurements aim for higher accuracy and sensitivity to low-energy neutrinos.

Abstract

This paper reviews the constraints on the solar neutrino mixing parameters with data collected by the Homestake, SAGE, GALLEX, Kamiokande, SuperKamiokande, Borexino and SNO experiments. An emphasis will be given to the global solar neutrino analyses in terms of matter-enhanced oscillation of two and three active flavors. The results to-date, including both solar model dependent and independent measurements, indicate that electron neutrinos are changing to other active types on route to the Earth from the Sun. The total flux of solar neutrinos is found to be in very good agreement with solar model calculations. Today, solar neutrino measurements focus on greater accuracy for mixing parameters and on better sensitivity to low neutrino energies. This article also summarizes near future prospects in the field of solar neutrino physics.