Spin Puzzle in Nucleon

Details Spin Puzzle in Nucleon Spin Puzzle in Nucleon

1995-02-06

arxiv.org/abs/hep-ph/9502232v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, latex file with one figure (Fig file to be sent separately)

Scientific paper

The object of this brief review is to reconcile different points of view on how the spin of proton is made up from its constituents. On the basis of naive quark model with flavour symmetry such as isospin or SU(3) one finds a static description. On the contrary the local SU(3) colour symmetry gives a dynamical view. Both these views are contrasted and the role of U(1) axial anomaly and the ambiguity for the measurable spin content is discussed.

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