Study of Triple-Gauge-Boson Couplings ZZZ, ZZgam and Zgamgam at LEP

et al; J. Abdallah; the DELPHI Collaboration

Study of Triple-Gauge-Boson Couplings ZZZ, ZZgam and Zgamgam at LEP

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arxiv 0706.2741 v1 pith:OK4M4KY7 submitted 2007-06-19 hep-ex

The DELPHI Collaboration , J. Abdallah , et al This is my paper · ORCID

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Neutral triple-gauge-boson couplings ZZZ, ZZgam and Zgamgam have been studied with the DELPHI detector using data at energies between 183 and 208 GeV. Limits are derived on these couplings from an analysis of the reactions e+e- -> Zgam, using data from the final states gamma f fbar, with f = q or neutrino, from e+e- -> ZZ, using data from the four-fermion final states q qbar q qbar, q qbar mu+ mu-, q qbar e+ e-, q qbar nu nubar, mu+ mu- nu nubar and e+ e- nu nubar, and from e+e- -> Zgam*, in which the final state gamma is off mass-shell, using data from the four-fermion final states q qbar e+ e- and q qbar mu+ mu-. No evidence for the presence of such couplings is observed, in agreement with the predictions of the Standard Model.

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