ZZ production in e + e - interactions at \(\sqrt{s} =\) 183-209 GeV

  • The DELPHI Collaboration
experimental physics

Abstract.

Measurements of on-shell ZZ production are described, using data from the DELPHI experiment at LEP in e + e - collisions at centre-of-mass energies between 183 and 209 GeV, corresponding to an integrated luminosity of about 665 pb-1. Results obtained in each of the final states \(q \bar{q} q \bar{q}\), \(\nu \bar{\nu} q \bar{q}\), \(\mu^+ \mu^- q \bar{q}\), \(e^+e^- q \bar{q}\), \(\tau^+ \tau^- q \bar{q}\), l + l - l + l -, and \(\nu \bar{\nu} l^+l^-\) (with \(l=e,\mu\)) are presented. The measured production cross-sections are consistent with the Standard Model expectations. These results update and supersede those already published at 183 and 189 GeV.

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© Springer-Verlag Berlin/Heidelberg 2003

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  • The DELPHI Collaboration

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