Double fermionic contributions to the heavy-quark vacuum polarization

Dec, 2007
13 pages
Published in:
  • JHEP 07 (2008) 001
e-Print:

Citations per year

200720112015201920231923
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