%0 Journal Article
%T Violation of the Bjorken Sum Rule in QCD
%A Stefano Forte
%J Physics
%D 1992
%I arXiv
%R 10.1016/0370-2693(93)91522-O
%X We show that the Bjorken sum rule for the first moment of the polarized nucleon structure function $g_1$ is not necessarily satisfied in QCD if the axial anomaly is taken into account. We argue that nonperturbative QCD effects should lead to a violation of the sum rule of the order of the percentage isospin violation in current quark masses.
%U http://arxiv.org/abs/hep-ph/9211227v2