Chiral-Odd Twist-3 Distribution Function $e(x)$

Abstract

We clarify the nonperturbative origin of the $\delta$-function singularity at $x=0$ in the chiral-odd twist-3 distribution function $e(x)$ of the nucleon. We also compare a theoretical prediction for $e(x)$ based on the chiral quark soliton model with the empirical information extracted from the CLAS semi-inclusive DIS measurement.

LaTeX, 4 pages, 2 figures, to appear in the Proceedings of Spin2004