Seeking CP Violating Couplings in ZZ Production at LEP2
  The effects of CP violating anomalous ZZZ and gammaZZ vertices in ZZ production are determined. We present the differential cross-section for e+e- -> ZZ with dependence on the spins of the Z bosons. It is shown that from the different spin combinations those with one longitudinally and one transversally polarized Z in the final state are the most sensitive to CP violating anomalous couplings. 
Jochen Biebel