Experiments towards resolving the proton charge radius puzzle

TL;DR

This paper reviews the ongoing efforts and experiments aimed at resolving the discrepancy in measurements of the proton charge radius obtained from different experimental methods.

Contribution

It provides a comprehensive overview of experimental approaches undertaken to address the proton charge radius puzzle and compares their findings.

Findings

Summary of muonic hydrogen results and discrepancies

Overview of scattering and hydrogen spectroscopy measurements

Discussion of experimental efforts to resolve the conflict

Abstract

We review the status of the proton charge radius puzzle. Emphasis is given to the various experiments initiated to resolve the conflict between the muonic hydrogen results and the results from scattering and regular hydrogen spectroscopy.