651 citations · 15.8k across the 213 of their papers we have counts for
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The relation between the and the on-shell quark mass at order
K. G. Chetyrkin, M. Steinhauser
The relation between the on-shell and mass can be expressed through scalar and vector part of the quark propagator. In principle these two-point functions have to be…
Second Order QCD Corrections to the Top Decay Rate
K. G. Chetyrkin, R. Harlander, T. Seidensticker +1
We report on a recent calculation of the top decay rate up to order α_s^2. It is based on asymptotic expansions of the off-shell top propagator, followed by a Padé approximation in…
Second Order Corrections to the Muon Lifetime and the Semileptonic B Decay
M. Steinhauser, T. Seidensticker
In this article two-loop QED corrections to the muon decay and corrections of order to the semileptonic decay of the bottom quark are considered. We compute the imaginary p…
Short Distance Mass of a Heavy Quark at Order α_s^3
K. G. Chetyrkin, M. Steinhauser
The relation between the on-shell quark mass and the mass defined in the modified minimal subtraction scheme is computed up to order α_s^3. Implications for the numerical values of…
Practical Algebraic Renormalization
P. A. Grassi, T. Hurth, M. Steinhauser
A practical approach is presented which allows the use of a non-invariant regularization scheme for the computation of quantum corrections in perturbative quantum field theory. The…
Second Order QCD Corrections to
K. G. Chetyrkin, R. Harlander, T. Seidensticker +1
Corrections of to the decay of the top quark into a W boson and a bottom quark are calculated. The method is based on an expansion of the top quark propagator for small…
Hadronic contribution to and the anomalous magnetic moment of the muon
M. Steinhauser
In this contribution recent developments are discussed which lead to a significant reduction of the error for and .
Non-Singlet Corrections of O(α_s^2 G_F M_t^2) to Γ(Z\to b\bar{b})
K. G. Chetyrkin, M. Steinhauser
The partial decay rate of the boson into bottom quarks constitutes an important decay channel. This is mainly due to the virtual presence of the top quark in the loop diagrams…