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arXiv · hep-ph/9705254

Heavy Quark Current Correlators to O(α_s^2)

K. G. Chetyrkin·J. H. Kühn·M. Steinhauser
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Abstract

In this paper the three-loop polarization functions Π(q^2) are calculated for the cases of an external vector, axial-vector, scalar or pseudo-scalar current. Results are presented for the imaginary part which directly leads to the cross section $σ(e^+e^- \to Z \to hadrons)$ and to the Higgs decay rates, respectively.

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K. G. Chetyrkin, J. H. Kühn, M. Steinhauser. 1997-05-07. Heavy Quark Current Correlators to O(α_s^2). https://doi.org/10.1016/s0550-3213(97)00481-1

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