The SU(2)L × U(1) Model

  • Rabindra N. Mohapatra
Part of the Contemporary Physics book series (GTCP)


In this section we will apply the ideas of spontaneously broken gauge theories to construct the first successful model of electro-weak interaction of quarks and leptons. As we discussed in the Introduction the observed universality of the four-Fermi coupling of weak-decay processes suggests the existence of a hidden symmetry of weak interactions, and the symmetry manifests itself not through the existence of degenerate multiplets but through broken local symmetries. The SU(2) L × U(l) model of Glashow, Weinberg, and Salam [1] provides a realization of this idea in the framework of a renormalizable field theory, and the recent discovery of W ± - and Z-bosons in the proton-antiproton collider experiments [2] has proved the correctness of these ideas and given a boost to the study of spontaneously broken non-abelian gauge theories as the way to probe further into the structure of quark-lepton interactions. This will be explored in the subsequent sections.


Higgs Boson Gauge Boson Yukawa Coupling Radiative Correction Atomic Parity Violation 
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Copyright information

© Springer Science+Business Media New York 1986

Authors and Affiliations

  • Rabindra N. Mohapatra
    • 1
  1. 1.Department of Physics and AstronomyUniversity of MarylandCollege ParkUSA

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