Double fermionic contributions to the heavy-quark vacuum polarization
classification
✦ hep-ph
keywords
alphaavailablebyproductcomputecontributionscorrectionscorrelatorcurrent
read the original abstract
We compute the virtual O(\alpha_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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