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Weak Interaction

  1. Ken-ichi Hikasa

Published Online: 15 OCT 2009

DOI: 10.1002/3527600434.eap694

Encyclopedia of Applied Physics

Encyclopedia of Applied Physics

How to Cite

Hikasa, K.-i. 2009. Weak Interaction. Encyclopedia of Applied Physics. 147–168.

Author Information

  1. Tohoku University, Department of Physics, Sendai, Japan

Publication History

  1. Published Online: 15 OCT 2009


Weak interaction is one of the four known fundamental forces in Nature. H induces instability of many elementary particles. The interaction is mediated by particles called W and Z bosons and its structure has been understood in terms of so-called gauge theory. The origin of the mass of the W and Z bosons as well as quarks and leptons still remains to be clarified.


  • weak interaction;
  • hadrons;
  • neutrinos;
  • Higgs boson;
  • quarks;
  • leptons;
  • gauge bosons