Spin Effects and Role of Constituent Quark Size

Abstract

The nonperturbative mechanism for spin effects in inclusive production based on the constituent quark model is considered. The main role belongs to the orbital angular momentum and the polarization of the $\bar{q}q$--pairs in the internal structure of the constituent quarks.

Comments: 5 pages, 2 figures, talk given by S.M. Troshin at the 10-th Workshop on High Energy Spin Physics (Nato Advanced Research Workshop) Spin-03, Dubna, September 16-20, 2003