ar X iv : h ep - p h / 02 08 24 2 v 2 1 3 N ov 2 00 2 Nucleon strangeness and spin crisis ?
نویسنده
چکیده
We summarize three alternative extensions of the quark-valence picture of nucleon strangeness and spin, including (1) gluon spin in QCD, (2) Bjorken sum rule and QCD, (3) D–E meson mixing and tadpole leakage. All three approaches suggest that ∼ 40% of the nucleon’s spin (as well as its momentum) resides with quarks, but that less than 6% is due to strange quarks.
منابع مشابه
ar X iv : h ep - p h / 02 08 24 2 v 1 2 6 A ug 2 00 2 Nucleon strangeness and spin crisis ?
We summarize three alternative extensions of the quark-valence picture of nucleon strangeness and spin, including (1) gluon spin in QCD, (2) Bjorken sum rule and QCD, (3) D–E meson mixing and tadpole leakage. All three approaches suggest that ∼ 40% of the nucleon’s spin (as well as its momentum) resides with quarks, but that less than 6% is due to strange quarks.
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ar X iv : h ep - p h / 06 11 24 8 v 1 18 N ov 2 00 6 1 Axial exchange currents and nucleon spin
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