# The Lamb shift of the 1s state in hydrogen: Two-loop and three-loop contributions

@article{Karshenboim2019TheLS, title={The Lamb shift of the 1s state in hydrogen: Two-loop and three-loop contributions}, author={Savely G. Karshenboim and Akira Ozawa and Valery A. Shelyuto and Robert Szafron and Vladimir G. Ivanov}, journal={Physics Letters B}, year={2019} }

## 17 Citations

### The Proton Structure in and out of Muonic Hydrogen

- PhysicsAnnual Review of Nuclear and Particle Science
- 2022

Laser spectroscopy of muonic atoms has been recently used to probe properties of light nuclei with unprecedented precision. We introduce nuclear effects in hydrogen-like atoms, nucleon structure…

### Towards an Independent Determination of Muon g-2 from Muonium Spectroscopy.

- PhysicsPhysical review letters
- 2021

It is shown that muonium spectroscopy in the coming years can reach a precision high enough to determine the anomalous magnetic moment of the muon below one part per million (ppm), and the good agreement between theory and experiment for the electron g-2 indicates that new physics interactions are unlikely to affectMuonium Spectroscopy down to the envisaged precision.

### Measuring the α-particle charge radius with muonic helium-4 ions

- PhysicsNature
- 2021

The measurement of two 2S–2P transitions in the muonic helium-4 ion yields a precise determination of the root-mean-square charge radius of the α particle, providing a benchmark for few-nucleon theories, lattice quantum chromodynamics and electron scattering.

### Quantum electrodynamics of two-body systems with arbitrary masses up to α6 order

- PhysicsPhysical Review A
- 2022

We perform a calculation of quantum electrodynamics eﬀects in excited states with l > 1 of arbitrary two-body systems up to α 6 µ order. The obtained results are valid for hadronic atoms, as long as…

### Muonium Lamb shift: theory update and experimental prospects

- PhysicsEPJ Web of Conferences
- 2022

We review the theory of the Lamb shift for muonium, provide an updated numerical value and present the prospects of the Mu-MASS collaboration at PSI to improve upon their recent measurement. Due to…

### The proton radius (puzzle?) and its relatives

- PhysicsProgress in Particle and Nuclear Physics
- 2021

### Self-consistent extraction of spectroscopic bounds on light new physics

- Physics
- 2022

Fundamental physical constants are determined from a collection of precision measurements of elementary particles, atoms and molecules. This is usually done under the assumption of the Standard Model…

### Rovibrational spin-averaged transitions in the hydrogen molecular ions

- Chemistry, PhysicsPhysical Review A
- 2021

We reconsider the calculation of rovibrational transition frequencies in hydrogen molecular ions. Some previously neglected contributions, such as the deuteron polarizability, are included into…

### Probing new physics using Rydberg states of atomic hydrogen

- PhysicsPhysical Review Research
- 2020

We consider the role of high-lying Rydberg states of simple atomic systems such as $^1$H in setting constraints on physics beyond the Standard Model. We obtain highly accurate bound states energies…

### Virtual Delbrück scattering and the Lamb shift in light hydrogenlike atoms

- PhysicsPhysical Review A
- 2019

We return to the problem of evaluation of the light-by-light contribution to the energy levels of the hydrogen atom. We find an additional contribution directly related to the Delbr\"uck scattering…

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