- Conference date: 9–14 November 2009
- Location: Mazatlán, (Mexico)
We study the structure of the spin of the proton and the Λ hyperon in an unquenched quark model which incorporates the effects of quark‐antiquark pair creation via a microscopic, QCD‐inspired, quark‐antiquark creation mechanism. It is shown that the inclusion of the qq̄ pairs leads to a sizeable contribution of the orbital angular momentum to the spin of the proton and the Λ hyperon.
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