The Rydberg constant and proton size from atomic hydrogen | Science
The next phase of the proton radius puzzle | Max-Planck-Institute for Quantum Optics
Scientists measure precise proton radius to help resolve decade-old puzzle - Peaceful Science
Progress on the proton-radius puzzle
The proton radius revisited | Science
Francis Villatoro on Twitter: "The proton radius puzzle in 2010: ~8σ discrepancy between muon and electron based measurements https://t.co/JEH2CpSIJg" / Twitter
New Measurement Fits Another Piece in the Proton Radius Puzzle | Department of Energy
Frontiers | Reinterpretation of Classic Proton Charge Form Factor Measurements
Protons - smaller than we thought | Our Research | Paul Scherrer Institut (PSI)
The present status of the proton radius puzzle: proton charge radius... | Download Scientific Diagram
The Proton Radius: Preliminary Result from the PRad Experiment
How lasers size up the shrinking proton
Armenian scientist helps solve proton radius puzzle
Experimental status of the proton radius
2020_05_14_Randolf Pohl: "Myonic Hydrogen and the Proton Radius Puzzle" - YouTube