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arXiv · 0712.2762

Double fermionic contributions to the heavy-quark vacuum polarization

M. Czakon·T. Schutzmeier
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Abstract

We compute the virtual O(α_s^3 n_f^2) corrections to the heavy quark vector current correlator in terms of expansions in the external momentum and as an exact numerical solution. As a byproduct, the available high-energy expansion at the three-loop level is extended.

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M. Czakon, T. Schutzmeier. 2007-12-17. Double fermionic contributions to the heavy-quark vacuum polarization. https://doi.org/10.1088/1126-6708%2F2008%2F07%2F001

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