PeP-neutrino Detection by Lithium Detector as a Direct Way to Search for Oscillation of Solar Neutrinos

TL;DR

This paper proposes using a lithium radiochemical detector to directly search for solar neutrino oscillations, aiming to distinguish between different neutrino oscillation solutions through phased experiments measuring pep- and Be7-neutrinos.

Contribution

It introduces a two-phase lithium detection experiment designed to provide definitive evidence for specific solar neutrino oscillation models.

Findings

First phase can quickly test SMA MSW solution.

Second phase can detect semiannual variations to confirm 'just-so' oscillation.

Results can differentiate between LMA MSW and other solutions.

Abstract

The high sensitivity of lithium detector to pep- and Be7-neutrinos makes a lithium radiochemical detector a powerful tool for the search of the oscillations of solar neutrinos. The first phase of lithium experiment on the installation with 10 tons of metallic lithium will enable to collect data within 1 year of measurements to provide very definite information about SMA MSW solution. the second phase with 10 modules 10 tons each will measure the semiannual variations of the signal, thus the contributions of pep- and Be7-lines will be weighted, what will give a "smoking-gun" evidence about "just-so" solution for large mixing angles and delta-m2 about 10-10 - 10-9 eV2. If both regions are not confirmed the results of lithium detector can be interpreted in favor of LMA MSW solution.