Electroweak precision tests in the LHC era and Z-decay form factors at two-loop level

The current status of electroweak precision tests after the discovery of the Higgs boson is reviewed, both from a phenomenological and from a theoretical point of view. Predictions for all Z-pole quantities are now available at the complete fermionic two-loop order within the Standard Model. The calculation of these corrections is described based on the example of the total Z-boson width. Finally, an outlook on the experimental improvements and theoretical challenges for a future high-luminosity e+e- collider is given.

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