Double fermionic contributions to the heavy-quark vacuum polarization
Dec, 2007Citations per year
Abstract: (arXiv)
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.- heavy quark
- current: vector
- correlation function: correction
- vacuum polarization
- expansion: momentum
- perturbation theory: higher-order
- numerical calculations
References(31)
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