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arxiv: hep-ph/9904472 · v2 · submitted 1999-04-28 · ✦ hep-ph

Predictions for all processes e^+e^- -> 4 fermions + gamma

A. Denner , S. Dittmaier , M. Roth , D. Wackeroth This is my paper
classification ✦ hep-ph
keywords gammadifferentelectroweakelementsfermionsfinalmatrixstates
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The complete matrix elements for e^+ e^- -> 4f and e^+ e^- -> 4f + gamma are calculated in the Electroweak Standard Model for polarized massless fermions. The matrix elements for all final states are reduced to a few compact generic functions. Monte Carlo generators for e^+ e^- -> 4f and e^+ e^- -> 4f + gamma are constructed. We compare different treatments of the finite widths of the electroweak gauge bosons; in particular, we include a scheme with a complex gauge-boson mass that obeys all Ward identities. The detailed discussion of numerical results comprises integrated cross sections as well as photon-energy distributions for all different final states.

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