Polarized nucleon structure functions within a chiral soliton model

H. Weigel, L. Gamberg, H. Reinhardt

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Abstract

We study polarized-spin structure functions of the nucleon within the bosonized Nambu–Jona-Lasinio model where the nucleon emerges as a chiral soliton. We present the electromagnetic polarized structure functions [Formula presented] and [Formula presented] for [Formula presented] scattering and discuss various sum rules in the valence quark approximation. This approximation is justified because in this model axial properties of the nucleon are dominated by their valence quark contributions. We find that these structure functions are well localized in the interval [Formula presented]. We compare the model predictions on the polarized structure functions with data from the E143 experiment by evolving them from the scale characteristic of the NJL model to the scale of the data. Additionally, a comparison is made with parametrized data at a momentum scale commensurate with the model calculation.

Original languageEnglish (US)
Pages (from-to)6910-6923
Number of pages14
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume55
Issue number11
DOIs
Publication statusPublished - Jan 1 1997

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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