Electroweak Precision Physics from Low to High Energies

Electroweak precision observables (EWPO) can give valuable information about the last unknown paramter of the Standard Model (SM), the Higgs-boson mass M H . EWPO can also restrict the parameter space of new physics models (NPM) such as the Minimal Supersymmetric Standard Model (MSSM). We review the respective constraints from the W boson mass, the effective leptonic mixing angle, the anomalous magnetic moment of the muon and electric dipole moments. Within the MSSM also the lightest Higgs-boson mass, Mh, is discussed as a precision observable. The EWPO, supplemented with B physics observables and astrophysical data can be used to determine indirectly the preferred mass scales of Supersymmetry and Mh. plenary talk given at the Lepton Photon 07, August 2007, Daegu, Korea email: [email protected] Electroweak Precision Physics from Low to High Energies