One-loop electro-weak corrections to three-jet observables of b-quarks e~+ e~- annihilations

摘要

We compute the full one-loop EW contributions of O(__s___(FM)~3) 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 as from jet rates and shape variables is ex_plained qualitatively and illustrated quantitatively. Their im_pact on the forward-backward asymmetry is also analysed.