Gluon Spin in a Quark Model
Abstract
We compute the gluon polarization G and the gluon total angular momentum Jg in the Isgur-Karl quark model. Taking into account self-interaction contributions, we obtain for both quantities a positive value of about 0.24 at the model scale μ02 0.25 GeV2. This estimate is reasonably close to the expectation from polarized deep inelastic scattering analyses.
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