Colloquium – History of Quantum Chromodynamics
Aula Eduard Fontserè
25/11/2013 - 00/00/0000
In 1971 Gell-Mann and I introduced the color quantum number of the quarks. One year later the exact color symmetry group was interpreted as the gauge group of a new gauge theory, quantum chromodynamics.

The self-coupling of the gluons leads to the property of asymptotic freedom and to the confinement of the quarks and gluons. The hadrons are color singlets. At DESY and at LEP the quarks and gluons have been observed indirectly at high energies as hadronic jets. Today QCD is regarded as the correct theory of the strong interactions and of the nuclear force.

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Generalitat de CatalunyaUniversitat de BarcelonaUniversitat Autònoma de BarcelonaUniversitat Politècnica de CatalunyaConsejo Superior de Investigaciones CientíficasCentres de Recerca de Catalunya