The Future Circular Collider in its electron-positron stage (FCC-ee) will operate as a high-luminosity, multi-purpose collider at the intensity frontier. Its unique combination of centre-of-mass energy reach, absolute beam energy calibration via resonant depolarisation, and huge integrated luminosities will allow for electroweak precision measurements with unprecedented accuracy. The FCC-ee programme includes precise determinations of the Z- and W-boson properties, measurements of heavy-quark observables, tests of gauge couplings, and sensitivity to physics beyond the Standard Model (BSM) through global fits. This contribution reviews the electroweak prospects at the FCC-ee, focusing on flagship measurements such as the Z lineshape, forward-backward asymmetries, Rb, and the W mass, together with recent feasibility studies and detector performance projections.
Leonardo Toffolin (Wed,) studied this question.