Abstract
The contribution of the quark-quark and quark-gluon interactions induced by instantons to the valence quark and proton spin-dependent structure functions is estimated within the instanton liquid model for a QCD vacuum. It is shown that this interaction leads to a rather large violation of the Ellis-Jaffe sum rule.
- Received 3 December 1997
DOI:https://doi.org/10.1103/PhysRevD.57.5539
©1998 American Physical Society