Recent Results on Proton Charge Radius and Polarizabilities
The proton charge radius and nucleon electromagnetic polarizabilities are fundamental properties probing the electromagnetic structure of the nucleons. Proton charge radius is directly related to the proton charge distribution and the nucleon electromagnetic polarizabilities characterize the response of the charge/magnetic constituents inside the nucleon to external electromagnetic fields. A precise understanding of these quantities is crucial not only for understanding how quantum chromodynamics (QCD) works in the non-perturbative QCD region but also for bound state quantum electrodynamics (QED) calculations of atomic energy levels. We discuss the experimental approaches employed in the recent decades to determine the proton charge radius and nucleon electromagnetic polarizabilities. We summarize the present status of the proton charge radius puzzle and polarizabilities measurements. Additionally, we provide prospects for various upcoming experiments.
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Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5106 Nuclear and plasma physics
- 5102 Atomic, molecular and optical physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0105 Mathematical Physics
Citation
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5106 Nuclear and plasma physics
- 5102 Atomic, molecular and optical physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0105 Mathematical Physics