Nucleon spin-flavor structure in SU(3) breaking chiral quark model

Details Nucleon spin-flavor structure in SU(3) breaking chiral quark model Nucleon spin-flavor structure in SU(3) breaking chiral quark model

1997-02-18

arxiv.org/abs/hep-ph/9702363v1

Phys.Rev.D55:2624-2629,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, Latex, 4 tables. Phys. Rev. D (in press, submitted/revised in June/Nov 1996)

Scientific paper

10.1103/PhysRevD.55.2624

The SU(3) symmetric chiral quark model, which describes interactions between quarks, gluons and the Goldstone bosons, explains reasonably well many aspects of the flavor and spin structure of the proton, except for the values of $f_3/f_8$ and $\Delta_3/\Delta_8$. Introducing the SU(3)-breaking effect suggested by the mass difference between the strange and nonstrange quarks, we find that this discrepancy can be removed and better overall agreement obtained.

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