Single resonant neutral vector boson production at LEP2

The measurement of the cross-section for the single resonant production of neutral intermediate vector boson Zee is presented using the data collected by the ALEPH experiment at centre-of-mass energies between 183 and 207 GeV, corresponding to an integrated luminosity of 683 pb^{-1}. The analysis is performed in the inclusive hadronic decay and in the di-muon final state. The results obtained for the measured cross-section are in agreement with the Standard Model prediction.