- Community consensus on Standard Model predictions
- Accurate theory predictions for light muonic atoms (H, D, He) to test fundamental interactions by comparing to electronic atoms
Figure: Simplified scheme showing the impact of the proton charge radius, as extracted from the Lamb shift in muonic hydrogen, on improving fundamental constants and bound-state QED tests. [A. Antognini, F. Hagelstein and V. Pascalutsa, Ann. Rev. Nucl. Part. Sci. 72 (2022) 389]