One-loop Electro-Weak Corrections to Three-jet Observables of b-quarks in e+e- Annihilations
Abstract
We compute the full one-loop EW contributions of O(αS alphaEM3) entering the electron-positron into two b-quarks and one gluon cross section at the Z peak and LC energies. We include both factorisable and non-factorisable virtual corrections, photon bremsstrahlung but not the real emission of W and Z bosons. Their importance for the measurement of alphaS from jet rates and shape variables is explained qualitatively and illustrated quantitatively. Their impact on the forward-backward asymmetry is also analysed.
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