We derive the QCD corrections to the electroweak gauge boson vacuum polarization functions at high and zero momentum transfer in the case of arbitrary internal quark masses. We then discuss in this general case (i) the connection between the O(ααs) calculations of the vector boson self-energies using dimensional regularization and the one performed via a dispersive approach and (ii) the QCD corrections to the ρ parameter for a heavy quark isodoublet.
Asymptotic O(ααs) behavior of the electroweak gauge boson vacuum polarization functions for arbitrary quark masses
GAMBINO, Paolo
1994-01-01
Abstract
We derive the QCD corrections to the electroweak gauge boson vacuum polarization functions at high and zero momentum transfer in the case of arbitrary internal quark masses. We then discuss in this general case (i) the connection between the O(ααs) calculations of the vector boson self-energies using dimensional regularization and the one performed via a dispersive approach and (ii) the QCD corrections to the ρ parameter for a heavy quark isodoublet.
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