Nucleon structure functions from a chiral soliton

Details Nucleon structure functions from a chiral soliton Nucleon structure functions from a chiral soliton

1998-07-27

arxiv.org/abs/hep-ph/9807506v1

Nucl.Phys.Proc.Suppl. 74 (1999) 125

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, uses col2.sty (included). Talk presented by HW at the Int. Conf. QCD-98, Montpellier, July 1998. To appear in the pro

Scientific paper

10.1016/S0920-5632(99)00147-4

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 $\mu^2$ 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 $\mu^2$ 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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