Study of ZZ production at LEP at sqrt(s) = 183 - 209 GeV
  A study of Z boson pair production in e+e- annihilation using the OPAL detector at LEP is reported. The ZZ production cross-section is measured, limits on anomalous ZZgamma and ZZZ couplings are derived, and constraints on models of low scale quantum gravity in extra spatial dimensions are set. 
Gabriella Pasztor