Test of beta and antineutrino spectra symmetry in beta-decay

TL;DR

This paper discusses the importance of testing the symmetry between beta and antineutrino spectra in beta decay to better understand the decay mechanism, proposing experimental approaches to compare these spectra.

Contribution

It highlights the need for experiments to compare beta and antineutrino spectra, suggesting methods to detect potential asymmetries and revise spectrum calculation models.

Findings

Potential differences in spectra shape could indicate new physics

Proposes experimental setups using large detectors or sources

Highlights the need to revise antineutrino spectrum calculations

Abstract

The mechanism of beta decay in nature is not understood yet. Mirrored energy spectra of electron and antineutrino can clarify the situation. A special experiment is needed to measure antineutrino spectrum from known beta-decaying isotope to compare it with the beta one. One of ongoing experiments with large volume detector can be chosen to make the experiment. Another possibility is to make a special experiment close to a powerful source of mixture of known beta-decaying isotopes. If sufficient differences in shape will be observed the method of antineutrino spectrum calculation should be revised.