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Proton spin in a light-cone chiral quark model
We discuss the spin structure of the proton in a light-cone treatment of the chiral quark model. Based on the fact that the quark helicity ($\ensuremath{\Delta}q$) measured in polarized deep inelastic scattering experiments is actually the quark spin defined in the light-cone formalism rather than the quark spin ($\ensuremath{\Delta}{q}_{QM}$) defined …