Solar neutrino physics oscillations: Sensitivity to the electronic density in the Sun's core

TL;DR

This paper investigates how high-statistics solar neutrino data can be used to infer the Sun's core electronic density profile, providing an alternative to helioseismology with a model-independent inversion method.

Contribution

It introduces a novel, nearly model-independent inversion technique to determine the Sun's core electronic density from neutrino flux measurements.

Findings

Constraints on solar density and composition from neutrino data

Feasibility of inferring the solar core density profile independently of solar models

Potential to complement helioseismic diagnostics

Abstract

Solar neutrinos coming from different nuclear reactions are now detected with a high statistics. Consequently, an accurate spectroscopic analysis of the neutrino fluxes arriving on the Earth's detectors become available, in the context of neutrino oscillations. In this work, we explore the possibility of using this information to infer the radial profile of the electronic density in the solar core. So, we discuss the constraints on the Sun's density and chemical composition that can be determined from solar neutrino observations. This approach constitutes an independent and alternative diagnostic to the helioseismic investigations already done. The direct inversion method, that we propose to get the radial solar electronic density profile, is almost independent of the solar model.