Nucleon structure functions from a chiral soliton

H. Weigel; L. Gamberg; H. Reinhardt; O. Schroeder

doi:10.1016/s0920-5632(99)00147-4

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arXiv · hep-ph/9807506

Nucleon structure functions from a chiral soliton

H. Weigel·L. Gamberg·H. Reinhardt·O. Schroeder

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Abstract

We study nucleon structure functions within the bosonized version of the Nambu-Jona-Lasinio (NJL) model in which the nucleon emerges as the soliton in the chiral field. Upon boosting to the infinite momentum frame and performing the $q^2$-evolution in the context of the Gottfried sum rule for electron nucleon scattering we determine the intrinsic scale $μ^2$ of the NJL chiral soliton. We also compute the leading twist contributions of the polarized structure functions $g_1$ and $g_2$. We compare these model predictions with experiment by evolving them from $μ^2$ to the scale where the data are taken. Analogously we analyze the chiral-odd structure functions $h_T$ and $h_L$. Finally we generalize the treatment to flavor SU(3).

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H. Weigel, L. Gamberg, H. Reinhardt, O. Schroeder. 1998-07-27. Nucleon structure functions from a chiral soliton. https://doi.org/10.1016/s0920-5632(99)00147-4

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