# ${}^8$Be Decay Anomaly and Light $Z'$

## TL;DR

This paper explores a light Z' boson as a solution to the Beryllium-8 decay anomaly, presenting a minimal model that aligns with experimental constraints and offers insights into potential new physics beyond the Standard Model.

## Contribution

It introduces a minimal, anomaly-free Z' model with small gauge couplings that explains the Beryllium-8 decay anomaly while satisfying other experimental bounds.

## Key findings

- Proposes a 17 MeV Z' boson as the anomaly source.
- Develops an anomaly-free model with minimal particle content.
- Demonstrates compatibility with existing experimental constraints.

## Abstract

In this proceedings, we discuss a light (17 MeV) $Z'$ solution to the anomaly observed in the decay of Beryllium-8 by the Atomki collaboration. We detail an anomaly free model with minimal particle content which can satisfy all other experimental constraints with gauge couplings $\mathcal{O}(10^{-4})$.