Chiral Symmetry and the Intrinsic Structure of the Nucleon

Details Chiral Symmetry and the Intrinsic Structure of the Nucleon Chiral Symmetry and the Intrinsic Structure of the Nucleon

2001-01-19

arxiv.org/abs/hep-ph/0101211v1

Phys.Rev.Lett.86:5011-5014,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX, 10 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.86.5011

Understanding hadron structure within the framework of QCD is an extremely challenging problem. In order to solve it, it is vital that our thinking should be guided by the best available insight. Our purpose here is to explain the model independent consequences of the approximate chiral symmetry of QCD for two famous results concerning the structure of the nucleon. We show that both the apparent success of the constituent quark model in reproducing the ratio of the proton to neutron magnetic moments and the apparent success of the Foldy term in reproducing the observed charge radius of the neutron are coincidental. That is, a relatively small change of the current quark mass would spoil both results.

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