385 citations · 2.6k across the 90 of their papers we have counts for
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Laboratory constraint on the electric charge of the neutron and the neutrino
Savely G. Karshenboim
We revisit constraints on the electric charge of the neutron and neutrino as well as on e_p+e_e. We consider phenomenological constraints based on laboratory study of the electrica…
Decay of the dimuonium into a photon and a neutral pion
Andrzej Czarnecki, Savely G. Karshenboim
We compute the decay rate of dimuonium into a neutral pion and a photon. We find that approximately one in 10^5 ortho-dimuonia decays into this channel. We also determine the contr…
The recoil correction to the proton-finite-size contribution to the Lamb shift in muonic hydrogen
Savely G. Karshenboim, Evgeny Yu. Korzinin, Vladimir G. Ivanov +1
The Lamb shift in muonic hydrogen was measured some time ago to a high accuracy. The theoretical prediction of this value is very sensitive to the proton-finite-size effects. The p…
On the accuracy of the optical determination of the proton charge radius
Savely G. Karshenboim
Determination of the proton charge radius by different methods has produced an inconsistency. The most precise value (from spectroscopy of muonic hydrogen) strongly disagrees with…
Model-independent determination of the magnetic radius of the proton from spectroscopy of ordinary and muonic hydrogen
Savely G. Karshenboim
To date the magnetic radius of the proton has been determined only by means of electron-proton scattering, which is not free of controversies. Any existing atomic determinations ar…
A self-consistent value of the electric radius of the proton from the Lamb shift in muonic hydrogen
Savely G. Karshenboim
Recently a high-precision measurement of the Lamb shift in muonic hydrogen has been performed. An accurate value of the proton charge radius can be extracted from this datum with a…
Constraints on muon-specific dark forces
Savely G. Karshenboim, David McKeen, Maxim Pospelov
The recent measurement of the Lamb shift in muonic hydrogen allows for the most precise extraction of the charge radius of the proton which is currently in conflict with other dete…
HFS interval of the state of hydrogen-like atoms and a constraint on a pseudovector boson with mass below keV
S. G. Karshenboim
A constraint on a long-range spin-dependent interaction , which can be induced by a pseudovector light boson, is present…
Constraints on a long-range spin-independent interaction from precision atomic physics
S. G. Karshenboim
Constraints on a spin-independent interaction by exchange of a neutral light boson are derived from precision data on the electron anomalous magnetic moment and from atomic spectro…
Constraints on a long-range spin-dependent interaction from precision atomic physics
S. G. Karshenboim
We present a phenomenological constraint on a pseudovector light boson beyond the Standard Model, which can induce a long-range spin-dependent interaction $α^{\prime\prime}({\bf s}…
Precision physics of simple atoms and constraints on a light boson with ultraweak coupling
S. G. Karshenboim
Constraint on spin-dependent and spin-independent Yukawa potential at atomic scale is developed. That covers constraints on a coupling constant of an additional photon and a…
Hadronic Light-by-Light Scattering in the Muonium Hyperfine Splitting
S. G. Karshenboim, V. A. Shelyuto, A. I. Vainshtein
We consider an impact of hadronic light-by-light scattering on the muonium hyperfine structure. A shift of the hyperfine interval is calculated with…
Positronium-ion decay
Mariusz Puchalski, Andrzej Czarnecki, Savely G. Karshenboim
We present a precise theoretical prediction for the decay width of the bound state of two electrons and a positron (a negative positronium ion), Gamma(Ps^-) = 2.087 085(12)/ns. We…
Study of hyperfine structure in simple atoms and precision tests of the bound state QED
S. G. Karshenboim, S. I. Eidelman, P. Fendel +4
We consider the most accurate tests of bound state QED, precision theory of simple atoms, related to the hyperfine splitting in light hydrogen-like atoms. We discuss the HFS interv…
Precision physics of simple atoms: QED tests, nuclear structure and fundamental constants
Savely G. Karshenboim
Quantum electrodynamics is the first successful and still the most successful quantum field theory. Simple atoms, being essentially QED systems, allow highly accurate theoretical p…
Improved theoretical prediction for the 2s hyperfine interval in helium ion
Savely G. Karshenboim, Vladimir G. Ivanov
We consider the uncertainty of theoretical calculations for a specific difference of the hyperfine intervals in the 1s and 2s states in a light hydrogen-like atom. For a number of…
The factor of an electron or muon bound by an arbitrary central potential
S. G. Karshenboim, R. N. Lee, A. I. Milstein
We consider the factor of a spin-1/2 particle (electron or muon) bound by an arbitrary central field. We present an approach which allows one to express the relativistic fa…
Virtual light-by-light scattering and the g factor of a bound electron
R. N. Lee, A. I. Milstein, I. S. Terekhov +1
The contribution of the light-by-light diagram to the g factor of electron and muon bound in Coulomb field is obtained. For electron in a ground state, our results are in good agre…
Precision Study of Positronium: Testing Bound State QED Theory
Savely G. Karshenboim
As an unstable light pure leptonic system, positronium is a very specific probe atom to test bound state QED. In contrast to ordinary QED for free leptons, the bound state QED theo…
The g factor of proton
Savely G. Karshenboim, Vladimir G. Ivanov
We consider higher order corrections to the g factor of a bound proton in hydrogen atom and their consequences for a magnetic moment of free and bound proton and deuteron as well a…
Simple Atoms, Quantum Electrodynamics and Fundamental Constants
Savely G. Karshenboim
This review is devoted to precision physics of simple atoms. The atoms can essentially be described in the framework of quantum electrodynamics (QED), however, the energy levels ar…
Delbruck scattering and the g-factor of a bound electron
Savely G. Karshenboim, Alexander I. Milstein
The leading contribution of the light-by-light scattering effects to g-factor of a bound electron is derived. The corresponding amplitude is expressed in terms of low-energy Delbru…
Hadronic effects in leptonic systems: muonium hyperfine structure and anomalous magnetic moment of muon
S. I. Eidelman, S. G. Karshenboim, V. A. Shelyuto
Contributions of hadronic effects to the muonium physics and anomalous magnetic moment of muon are considered. Special attention is paid to higher-order effects and the uncertainty…
g factor in a light two body atomic system: a determination of fundamental constants to test QED
S. G. Karshenboim, V. G. Ivanov
Energy levels of a two-body atomic system in an external homogeneous magnetic field can be presented in terms of magnetic moments of their components, however, those magnetic momen…