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Have glueballs been seen?

Bertram Schwarzschild

Open publisher page 1 citations

Abstract

There is general optimism among elementary-particle physicists that quantum chromodynamics will prove to be the correct theory of the strong interactions. Although QCD is constructed in close analogy to quantum electrodynamics, the uniquely successful gauge theory of the electromagnetic interactions, the multiplicity of QCD “color charges” make it considerably more elaborate than QED. Unlike the uncharged photon of QED, “gluons,” the field quanta that mediate the strong interaction between quarks in QCD, are themselves bearers of the color charges.

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There is general optimism among elementary-particle physicists that quantum chromodynamics will prove to be the correct theory of the strong interactions. Although QCD is constructed in close analogy to quantum electrodynamics, the uniquely successful gauge theory of the electromagnetic interactions, the multiplicity of QCD “color charges” make it considerably more elaborate than QED. Unlike the uncharged photon of QED, “gluons,” the field quanta that mediate the strong interaction between quarks in QCD, are themselves bearers of the color charges.

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Available abstract

There is general optimism among elementary-particle physicists that quantum chromodynamics will prove to be the correct theory of the strong interactions. Although QCD is constructed in close analogy to quantum electrodynamics, the uniquely successful gauge theory of the electromagnetic interactions, the multiplicity of QCD “color charges” make it considerably more elaborate than QED. Unlike the uncharged photon of QED, “gluons,” the field quanta that mediate the strong interaction between quarks in QCD, are themselves bearers of the color charges.

Key concepts: Physics, Quantum chromodynamics, Gluon, Photon, Gauge theory, Quantum field theory, Particle physics, Color confinement

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