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

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.2624· OSTI ID:467511

Song, X; McCarthy, J S; Weber, H J ^[1]

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1. Institute of Nuclear and Particle Physics, Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)

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{sub 3}/f{sub 8} and {Delta}{sub 3}/{Delta}{sub 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. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 467511
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHIRAL SYMMETRY
FLAVOR MODEL
GLUONS
GOLDSTONE BOSONS
MASS DIFFERENCE
NUCLEONS
PROTONS
QUARK MODEL
QUARKS
SPIN
STRANGENESS
SU-3 GROUPS
SYMMETRY BREAKING