Chiral Symmetry and the Nucleon Structure Functions

Details Chiral Symmetry and the Nucleon Structure Functions Chiral Symmetry and the Nucleon Structure Functions

1997-07-29

arxiv.org/abs/hep-ph/9707500v2

Phys.Rev. D57 (1998) 5755-5766

Physics

High Energy Physics

High Energy Physics - Phenomenology

20pages, LaTex, 5 Postscript figures A numerical error of the original version was corrected. The discussion on the regulariza

Scientific paper

10.1103/PhysRevD.57.5755

The isospin asymmetry of the sea quark distribution as well as the unexpectedly small quark spin fraction of the nucleon are two outstanding discoveries recently made in the physics of deep-inelastic structure functions. We evaluate here the corresponding quark distribution functions within the framework of the chiral quark soliton model, which is an effective quark model of baryons maximally incorporating the most important feature of low energy QCD, i.e. the chiral symmetry and its spontaneous breakdown. It is shown that the model can explain qualitative features of the above-mentioned nucleon structure functions within a single framework, thereby disclosing the importance of chiral symmetry in the physics of high energy deep-inelastic scatterings.

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