151 citations · 640 across the 12 of their papers we have counts for
3 papers · 1 filter
Two-loop QCD corrections to semileptonic b-quark decays near maximum recoil
A. Pak, I. Blokland, A. Czarnecki
Two-gluon radiative corrections to the decay width have been computed analytically as an expansion in terms of \frac{m_c}{m_b} << 1 in the kinematical limit of zero l…
Nonrelativistic QED approach to the Lamb shift
Ulrich D. Jentschura, Andrzej Czarnecki, Krzysztof Pachucki
We calculate the one- and two-loop corrections of order alpha(Zalpha)^6 and alpha^2(Zalpha)^6 respectively, to the Lamb shift in hydrogen-like systems using the formalism of nonrel…
Calculation of the One- and Two-Loop Lamb Shift for Arbitrary Excited Hydrogenic States
Andrzej Czarnecki, Ulrich D. Jentschura, Krzysztof Pachucki
General expressions for quantum electrodynamic corrections to the one-loop self-energy [of order alpha(Zalpha)^6] and for the two-loop Lamb shift [of order alpha^2(Zα)^] are derive…