Isovector helicity quark quasi-distributions inside a large Nc nucleon
Abstract
In this letter, we report the results for the isovector polarized quark quasi-distribution functions u(x,v) - d(x,v) in the large Nc, calculated within the chiral quark-soliton model. It is shown that the polarized quark quasi-distributions present good convergence to the light-cone PDFs in the limit of the nucleon boost momentum PN ∞ (or the velocity v 1), compared to the case of the unpolarized isosinglet distributions.
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