Double Beta Decay

TL;DR

This paper reviews the significance of double beta decay experiments in determining the neutrino's absolute mass and whether it is its own antiparticle, highlighting recent results and future prospects.

Contribution

It provides a comprehensive summary of recent extit{zero-neutrino} double beta decay results and discusses upcoming technological advancements in the field.

Findings

Recent extit{zero-neutrino} double beta decay results constrain neutrino mass

Technological developments are advancing the search for neutrino properties

Future experiments aim to clarify neutrino's particle-antiparticle nature

Abstract

At least one neutrino has a mass of about 50 meV or larger. However, the absolute mass scale for the neutrino remains unknown. Furthermore, the critical question: Is the neutrino its own antiparticle? is unanswered. Studies of double beta decay offer hope for determining the absolute mass scale. In particular, zero-neutrino double beta decay (\BBz) can address the issues of lepton number conservation, the particle-antiparticle nature of the neutrino, and its mass. A summary of the recent results in \BBz, and the related technologies will be discussed in the context of the future \BBz\ program.