Luminosity constraint and entangled solar neutrino signals

TL;DR

This paper discusses the importance of the luminosity constraint in solar neutrino physics, especially for disentangling CNO and PP neutrino signals, and introduces an improved formulation of this constraint.

Contribution

It presents a new, improved form of the luminosity constraint, enhancing the analysis of entangled solar neutrino signals.

Findings

New formulation of the luminosity constraint

Improved analysis of CNO and PP neutrino signals

Enhanced interpretation of solar neutrino experiments

Abstract

The current frontier of solar neutrino physics is the observation of CNO neutrinos. The signals of CNO and PP neutrinos are however entangled: In fact, the pp-flux can be known precisely only if CNO-flux is quantified; the interpretation of the gallium experiments depends upon both fluxes; a precise knowledge of pep-flux is a precondition to extract the CNO-neutrino signal with Borexino. The luminosity constraint plays an increasingly important r\^ole: we present it in a new form, improving the expression obtained by J. Bahcall in Phys. Rev. C 65 (2002) 025801.