Abstract

▪ Abstract The Large Electron Positron collider LEP1 at CERN produced tens of millions of Z bosons, and the e+e− linear collider SLC at SLAC has produced Z bosons with its polarized e− beam. Along with the measurements of the top-quark and W-boson masses at the Fermilab Tevatron [Formula: see text] collider, these Z-factory experiments have tested the standard electroweak theory with unprecedented precision. This chapter reviews the renormalizable gauge theory of the electroweak interactions and its quantum-level tests. Implications of the precision measurements are then studied within the standard model and its extentions.

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