Weak corrections to three-jet production in electron-positron annihilations, 1. The factorisable contributions

Weak Corrections to Three - Jet Production in Electron - Positron Annihilations : 1 ) The Factorisable

We report on the calculation of the factorisable one-loop weak-interaction corrections to the initial and final states for three-jet observables in electron-positron annihilations. We show that such corrections are of a few percent at √ s = MZ . Hence, while their impact is not dramatic in the context of LEP1 and SLC, where the total error on the measured value of αS is larger, at a future Line...

Weak Corrections to Three - Jet Production in Electron - Positron Annihilations ∗

We report on the calculation of the factorisable one-loop weak-interaction corrections to the initial and final states for three-jet observables in electron-positron annihilations. We show that whereas such corrections are negligibly small at LEP energies they are significantly enhanced at a future Linear Collider, where we argue that they may be similar in size to the two-loop QCD effects. The...

NNLO corrections to 2-jet observables in electron-positron annihilation

I report on a numerical program, which can be used to calculate any infra-red safe twojet observable in electron-positron annihilation to next-to-next-to-leading order in the strong coupling constant αs. The calculation is based on the subtraction method. The result for the two-jet cross section is compared to the literature.

- Single Weak Boson Production in Electron - Positron

Radiative Corrections to Chargino Production in Electron-Positron Collisions

The results of a complete one-loop calculation for the production of chargino pairs in electron-positron collisions, including the option of polarized beams, are presented. The calculation has been performed in the on-shell renormalization scheme. Applications to the integrated cross section, to the forward-backward asymmetry for unpolarized beams, and to the left-right asymmetry show that the ...