Nucleon structure functions from a chiral soliton

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 ${\mu }^2$ 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).

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

References in corpus (6)

• Baryons as non-topological chiral solitons
• Nucleon Parton Distributions at Low Normalization Point in the Large N_c Limit
• Baryons as Chiral Solitons in the Nambu--Jona-Lasinio Model
• Measurements of the Proton and Deuteron Spin Structure Function g2 and Asymmetry A2
• Baryons as Three Flavor Solitons
• Nucleon Structure Functions from a Chiral Soliton

Cited by in corpus (2)

• Polarized Nucleon Structure Functions within a Chiral Soliton Model
• Combining Lattice QCD Results with Regge Phenomenology in a Description of Quark Distribution Functions