Electroweak Corrections to W-pair Production at LHC and ILC

We consider electro-weak beam corrections for W-pair production in electron-positron, as well as Quark-Antiquark annihilation at high energies. In this energy range the radiation corrections are dominated by Sudakov logarithms. With the help of evolutionary equations, these logarithms can be summed up. We present two-loop corrections up to next-next logarithms for the production of transversal and longitudinally polarized W-boson pairs.