# Neutrinoless Double-Beta Decay: Status and Prospects

## TL;DR

This review discusses the theoretical understanding, experimental efforts, and implications of neutrinoless double-beta decay, a rare nuclear process that could reveal new physics beyond the Standard Model.

## Contribution

It provides a comprehensive summary of recent theoretical developments, experimental status, and future prospects for detecting neutrinoless double-beta decay.

## Key findings

- Current experiments set lower bounds on decay half-life.
- Theoretical models predict decay rates depending on neutrino properties.
- Future experiments aim to explore more sensitive half-life ranges.

## Abstract

Neutrinoless double-beta decay is a forbidden, lepton-number-violating nuclear transition whose observation would have fundamental implications for neutrino physics, theories beyond the Standard Model and cosmology. In this review, we summarize the theoretical progress to understand this process, the expectations and implications under various particle physics models, as well as the nuclear physics challenges that affect the precise predictions of the decay half-life. We will also provide a synopsis of the current and future large-scale experiments that aim at discovering this process in physically well-motivated half-life ranges.