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Helicity Skewed Quark Distributions of the Nucleon and Chiral Symmetry by Penttinen, M.; Polyakov, M. V.; Goeke, K. is a scholarly article available to read on EtoBox.

What is Helicity Skewed Quark Distributions of the Nucleon and Chiral Symmetry about?

We compute the helicity skewed quark distributions $\widetilde{H}$ and $\widetilde{E}$ in the chiral quark-soliton model of the nucleon. This model emphasizes correctly the role of spontaneously broken chiral symmetry in structure of nucleon. It is based on the large-N_c picture of the nucleon as a soliton of the effective chiral lagrangian and allows to calculate the leading twist quark- and antiquark distributions at a low normalization point. We discuss the role of chiral symmetry in the helicity skewed quark distributions $\widetilde{H}$ and $\widetilde{E}$. We show that generalization of soft pion theorems, based on chiral Ward identities, leads in the region of -\xi < x < \xi to the pion pole contribution to $\widetilde{E}$ which dominates at small momentum transfer.

Author

Penttinen, M.; Polyakov, M. V.; Goeke, K.

Published

1999

Language

EN