Four Fermion processes at LEP II

Details Four Fermion processes at LEP II Four Fermion processes at LEP II

2001-05-02

arxiv.org/abs/hep-ex/0105007v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 6 figures, to be published in the proceedings of XXXVI th Rencontres de Moriond Electroweak Interactions and Unified

Scientific paper

In its second phase, LEP has given the unique opportunity to study four fermion processes never observed before. This papers deals with a preliminary study of $WW$, $We\nu$, $ZZ$ and $Z\gamma^\star$ production in $e^+e^-$ collisions. Measurement results on $WW$ cross section, $W$ branching fractions, $WWV$ ($V=Z/\gamma$) anomalous couplings and $W$ average polarization in $WW$ events are presented. Moreover cross section measurements for $We\nu$, $ZZ$ and $Z\gamma^\star$ production and limits on $ZZZ$ and $ZZ\gamma$ anomalous couplings are reported. All the results are in good agreement with the Standard Model expectations.

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