Gluon Spin in a Quark Model

Abstract

We compute the gluon polarization $\Delta G$ and the gluon total angular momentum $J_g$ 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 ${\mu }_0^2\simeq 0.25$ GeV${}^2$. This estimate is reasonably close to the expectation from polarized deep inelastic scattering analyses.

8 pages, no figures, 1 table

References in corpus (2)

• Spin Structure of the Proton from Polarized Inclusive Deep-Inelastic Muon-Proton Scattering
• How Much of the Nucleon Spin is Carried by Glue?

Cited by in corpus (13)

• Generalized Parton Distributions
• The Spin Structure of the Proton
• The Spin Structure of the Nucleon
• Measurement of the Spin Asymmetry in the Photoproduction of Pairs of High-pT Hadrons at HERMES
• The target asymmetry in hard vector-meson electroproduction and parton angular momenta
• Polarized Parton Distributiions and Light-Front Dynamics
• Implications of Color Gauge Symmetry For Nucleon Spin Structure
• The Spin Budget of the Proton at NNLO and Beyond
• Polarized Gluon Distribution Delta g(x) in the Proton
• Exploring the polarization of gluons in the nucleon
• The Gluon Spin in the Chiral Bag Model
• Orbital Angular Momentum Parton Distributions in Light-Front Dynamics
• Magnetic Polarizability of Virtual (ss') and (cc') Pairs in the Nucleon