Testing the standard model by precise determinations ofW±andZmasses

Abstract
We analyze the standard model's predictions for mW, mZ, and their interdependence. Simple formulas are given. Criteria for testing the theory at the tree and loop levels via precise mass measurements are proposed. Effects due to large Higgs-boson and top-quark masses as well as additional generations are illustrated. Constraints from neutral-current phenomenology are discussed. Present experimental values of mW and mZ are compared with theoretical expectations.