Renormalization of the EWCL and its Application to LEP2

We perform a systematic one-loop renormalization on the electroweak chiral Lagrangian (EWCL) up to O(p4) operators and construct the renormalization group equations (RGE) for the anomalous couplings. We examine the impact of the triple gauge coupling (TGC) measurement from LEP2 to the uncertainty of the S–T parameter at the Λ = 1TeV, and find that the uncertainty in the TGC measurements can shift S(Λ) at least 3.3σ.