| 单词 | electroweak theory |
| 释义 | electroweak theory A gauge theory (sometimes called quantum flavourdynamics , or QFD ) that gives a unified description of the electromagnetic and weak interactions (see fundamental interactions). A successful electroweak theory was proposed in 1967 by Steven Weinberg (1933– ) and Abdul Salam (1926–1996), known as the Weinberg–Salam model or WS model . Because similar ideas were put forward by Sheldon Glashow (1926– ), it is sometimes known as the Glashow-Weinberg-Salam model or GWS model . In this electroweak theory the gauge group is non-Abelian and the gauge symmetry is a broken symmetry. The electroweak interaction is mediated by photons and by intermediate vector bosons, called the W boson and the Z boson. The observation of these particles in 1983/84, with their predicted energies, was a major success of the theory. The theory successfully accounts for existing data for electroweak processes and also predicts the existence of a heavy particle with spin 0, the Higgs boson |
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