Precision $\bar \nu_e$-electron Scattering Measurements with IsoDAR to Search for New Physics

TL;DR

This paper discusses using the IsoDAR neutrino source with KamLAND to improve measurements of electron antineutrino scattering, aiming to test the Standard Model and search for new physics with high precision.

Contribution

It proposes a novel experimental setup combining IsoDAR with KamLAND to significantly enhance the data sample for neutrino-electron scattering measurements.

Findings

Potential 3.2% precision in measuring 

Enhanced sensitivity to non-standard neutrino interactions

Sample size exceeds previous measurements by over five times

Abstract

IsoDAR provides a pure and intense $\bar \nu_e$ source with an average energy of 6.5 MeV produced through $^8$Li $\beta$-decay. This source can be paired with a large scintillator detector, such as KamLAND, to produce a sample of $\bar \nu_e$-electron scatters that is more than five times larger than what has been collected before. Such a sample would allow for a 3.2% measurement of $\sin^2\theta_W$ and a sensitive search for non-standard interactions.