5 papers
Recoil correction to the magnetic moment of a bound electron
Alexander Yelkhovsky
The effect of a finite nuclear mass on the magnetic moment of the electron bound in the ground state of a hydrogen-like ion is analyzed. Using the exact in Zαexpression for the rec…
Top-Antitop Pair Production close to Threshold: Synopsis of recent NNLO Results
A. H. Hoang, M. Beneke, K. Melnikov +10
Using non-relativistic effective theories, new next-to-next-to-leading order (NNLO) QCD corrections to the total production cross section at the Linear Collider have been…
Recent results with heavy quarks and light lepton bound states
Andrzej Czarnecki, Kirill Melnikov, Alexander Yelkhovsky
Recent results on second order quantum corrections to semileptonic decays of b quarks and positronium spectroscopy are reviewed. Similarities between calculations in these seemingl…
Vacuum Polarization Contribution to Hydrogen and Positronium Energies
A. Yelkhovsky
Relative order α(Zα)^3 shift of the energy levels induced by the vacuum polarization is reexamined for a bound system of two particles with masses m and M. Recent results for hydro…
Order corrections to hydrogen P levels
E. A. Golosov, I. B. Khriplovich, A. I. Milstein +1
The order shift of hydrogen P levels is found. The corrections are predominantly of relativistic origin. Our approach is a straightforward extension of that…