Status of Direct Determination of Solar Neutrino Fluxes after Borexino

TL;DR

This paper updates the measurement of solar neutrino fluxes using recent Borexino data, comparing results with solar models and analyzing the impact of different assumptions on flux normalization.

Contribution

It provides a comprehensive analysis of solar neutrino fluxes incorporating the latest Borexino results and examines their consistency with Standard Solar Models under various assumptions.

Findings

Fluxes are consistent with Standard Solar Model predictions.

Results are independent of Gallium experiment inputs.

Flux normalization assumptions affect model comparisons.

Abstract

We determine the solar neutrino fluxes from the global analysis of the most up-to-date terrestrial and solar neutrino data including the final results of the three phases of Borexino. The analysis are performed in the framework of three-neutrino mixing with and without accounting for the solar luminosity constraint. We discuss the independence of the results on the input from the Gallium experiments. The determined fluxes are then compared with the predictions provided by the latest Standard Solar Models. We quantify the dependence of the model comparison with the assumptions about the normalization of the solar neutrino fluxes produced in the CNO-cycle as well as on the particular set of fluxes employed for the model testing.