Limits from LEP 2 on possible enhancement of Re ε′/ε due to anomalous gauge boson couplings

It has been shown in the past that the real part of the epsilon'/epsilon ratio is particularly sensitive to anomalous gauge couplings that modify the Standard Model Lagrangian. Due to the loose bounds on these couplings coming from low energy processes and to the poor sensitivity of hadron colliders to couplings such as Deltag(Z)(1), it has been argued that anomalous couplings could still produce an enhancement of Re epsilon'/epsilon bringing this observable closer to the experimental value obtained by KTeV, NA31 and NA48. The impact of the new measurements done at LEP2 in these years is discussed and new severe constraints to this hypothesis are determined.