History, quark model and the SU(3)-symmetry

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History In the 1960´s experiments were performed at SLAC in order to obtain information on the structure and the substructure of hadrons assuming that they are made of constituents and not fundamental particles. Simela Aslanidou 14.12.2006
History • the method of the experiments at SLAC was the same as Rutherford had used in his experiments to explore the structure of an atom. In case of hadrons lepton-hadronscattering was a suitable probe. • the idea was to apply a beam of structureless particles (leptons) at high energy and thus high momentum transfer to obtain a high space-time resolution. • this process is called the deep-inelastic electron-proton scattering. Simela Aslanidou 14.12.2006
Page 1 and 2: QCD History, quark model and the SU
Page 3 and 4: History • up to the beginning of
Page 5 and 6: History • 1950´s Robert Hofstadt
Page 7: History • both, Gell-Mann and Zwe
Page 11 and 12: Concepts The proton is an extended
Page 13 and 14: Concepts invariant mass W² c² = P
Page 15 and 16: Inelastic scattering Displaying the
Page 17 and 18: Inelastic scattering d² σ dΩdE
Page 19 and 20: Quarks Existence of Quarks there is
Page 21 and 22: Quark model Problems • non-observ
Page 23 and 24: Necessity of the colour Quarks are
Page 25 and 26: Colour • in 1965 O.W.Greenberg in
Page 27 and 28: Colour The additive colour model Si
Page 29 and 30: Quark model • why are there three
Page 31 and 32: Simela Aslanidou 14.12.2006 Quark m
Page 33 and 34: Ratio of the cross section Comparis
Page 35 and 36: Gluons • gluons are the gauge bos
Page 37 and 38: SU(N) • group of the non-abelian
Page 39 and 40: SU(3) Why SU(3)-flavour? With the S
Page 41 and 42: The Baryon-Oktet Start from the fun
Page 43 and 44: References T. Muta, World Scientif

History, quark model and the SU(3)-symmetry

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