636 citations · 10.9k across the 111 of their papers we have counts for
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hep-ph2005★ 228 cited
Scalar Correlator at O(alpha_s^4), Higgs Decay into b-quarks and Bounds on the Light Quark Masses
P. A. Baikov, K. G. Chetyrkin, J. H. Kühn
We compute, for the first time, the absorptive part of the massless correlator of two quark scalar currents in five loops. As physical applications we consider the O(alpha_s^4) cor…
hep-ph2005★ 306 cited
QCD Decoupling at Four Loops
K. G. Chetyrkin, J. H. Kühn, C. Sturm
We present the matching condition for the strong coupling contant alpha_s at a heavy quark threshold to four loops in the modified minimal subtraction scheme. Our results lead to f…
hep-ph2005★ 52 cited
Strange Quark Mass from Pseudoscalar Sum Rule with O(alpha_s^4) Accuracy
K. G. Chetyrkin, A. Khodjamirian
We include the new, five-loop, O(alpha_s^4) correction into the QCD sum rule used for the s-quark mass determination. The pseudoscalar Borel sum rule is taken as a study case. The…