27 citations · 47 across the 2 of their papers we have counts for
4 papers
Expansion of bound state energies in powers of m/M and (1-m/M)
Ian Blokland, Andrzej Czarnecki, Kirill Melnikov
Elaborating on a previous letter, we use a new approach to compute energy levels of a non-relativistic bound-state of two constituents, with masses m and M, by systematic expansion…
Expansion of bound-state energies in powers of m/M
Andrzej Czarnecki, Kirill Melnikov
We describe a new approach to computing energy levels of a non-relativistic bound-state of two constituents with masses M and m, by a systematic expansion in powers of m/M. After d…
Two-loop QCD Corrections to Transitions at Zero Recoil: Analytical Results
Andrzej Czarnecki, Kirill Melnikov
We present analytical results for the contributions to the functions and which parameterize QCD corrections to semileptonic transitions at zero re…
HQET chromomagnetic interaction at two loops
A. Czarnecki, A. G. Grozin
We present the coefficient of the chromomagnetic interaction operator, the only unknown coefficient in the Heavy Quark Effective Theory (HQET) lagrangian up to the level, wit…