On the Flavor Structure of the Constituent Quark

Abstract

We discuss the dressing of constituent quarks with a pseudoscalar meson cloud within the effective chiral quark model. SU(3) flavor symmetry breaking effects are included explicitly. Our results are compared with those of the traditional meson cloud approach in which pions are coupled to the nucleon. The pionic dressing of the constituent quarks explains the experimentally observed violation of the Gottfried Sum Rule and leads to an enhanced nonperturbative sea of quark-antiquark pairs in the constituent quark and consequently in the nucleon. We find 2.5 times more pions and 10-15 times more kaons in the nucleon than in the traditional picture.

7 pages, LaTeX, 4 Postscript figures, to appear in J. Phys. G

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• Effect of Asymmetric Strange-Antistrange Sea to the NuTeV Anomaly
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• New Relations and Constraints on Quark Spin-flavor Contents in Symmetry-breaking Chiral Quark Model
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• Phenomenological analysis of nucleon strangeness and meson-nucleon sigma terms
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