科研之友
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摘要
The formalism for a new generation of unquenched quark models for baryons in which the effects of quark-antiquark pairs are taken into account in an explicit form via a microscopic, QCD-inspired, quark-antiquark creation mechanism, is presented. As an application the quark-antiquark contribution to the spin of the proton and the Sigma(+) is discussed. Finally the strangeness radius of the Sigma(+) in the closure limit is calculated.
- 出版日期2011-5
