59 citations · 125 across the 5 of their papers we have counts for
5 papers
Matching QCD and HQET heavy-light currents at three loops
S. Bekavac, A. G. Grozin, P. Marquard +3
We consider the currents formed by a heavy and a light quark within Quantum Chromodynamics and compute the matching to Heavy Quark Effective Theory to three-loop accuracy. As an ap…
Light quark mass effects in the chromomagnetic moment
S. Bekavac, A. Grozin, D. Seidel +1
We present the three-loop QCD corrections to the quark chromomagnetic moment including two different nonzero masses. This is a necessary ingredient to obtain the corresponding corr…
On-shell renormalisation constants including two different nonzero masses
Stefan Bekavac, Dirk Seidel
We present results for the effect of a second massive quark in the relation between the pole and the minimal subtracted quark mass at the three loop level. We also consider the ana…
Light quark mass effects in the on-shell renormalization constants
S. Bekavac, A. Grozin, D. Seidel +1
We compute the three-loop relation between the pole and the minimally subtracted quark mass allowing for virtual effects from a second massive quark. We also consider the analogue…
Calculation of Massless Feynman Integrals using Harmonic Sums
Stefan Bekavac
A method for the evaluation of the epsilon expansion of multi-loop massless Feynman integrals is introduced. This method is based on the Gegenbauer polynomial technique and the exp…