Nonabelian Gauge Theory of Strong Interactions

The Standard Theory

10.1093/oso/9780198805175.003.0006 ◽

2017 ◽

Author(s):

John Iliopoulos

Keyword(s):

Gauge Theory ◽

Invariant Theory ◽

Standard Theory ◽

Strong Interactions ◽

Gauge Invariant ◽

Electromagnetic Interactions ◽

Protons And Neutrons ◽

Free Particles ◽

Theoretical Predictions ◽

Theory And Experiment

All ingredients of the previous chapters are combined in order to build a gauge invariant theory of the interactions among the elementary particles. We start with a unified model of the weak and the electromagnetic interactions. The gauge symmetry is spontaneously broken through the BEH mechanism and we identify the resulting BEH boson. Then we describe the theory known as quantum chromodynamics (QCD), a gauge theory of the strong interactions. We present the property of confinement which explains why the quarks and the gluons cannot be extracted out of the protons and neutrons to form free particles. The last section contains a comparison of the theoretical predictions based on this theory with the experimental results. The agreement between theory and experiment is spectacular.

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The World as Quarks, Leptons and Bosons

Australian Journal of Physics ◽

10.1071/ph760473 ◽

1976 ◽

Vol 29 (6) ◽

pp. 347 ◽

Cited By ~ 2

Author(s):

M Gell-Mann

Keyword(s):

Gauge Theory ◽

Gauge Theories ◽

Strong Interactions ◽

Gauge Bosons ◽

Yang Mills ◽

Electromagnetic Interactions ◽

The World

A descriptive review is given of gauge theories of weak, electromagnetic and strong interactions. The strong interactions are interpreted in terms of an unbroken Yang-Mills gauge theory based on SU(3) colour symmetry of quarks and gluons. The confinement mechanism of quarks, gluons and other nonsinglets is discussed. The unification of the weak and electromagnetic interactions through a broken Yang-Mills gauge theory is described. In total the basic constituents are then the quarks, leptons and gauge bosons.

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