Bjorken sum rule at low Q^2
arXiv:hep-ph/0207252 · doi:10.1016/S0370-2693(02)02617-5
Abstract
A description of the generalized Gerasimov-Drell-Hearn sum rules for proton and neutron is suggested, using their relation to the Bjorken sum rule. The results support an earlier conjecture, that the structure function g_T features a smooth Q^2-dependence, while the structure function g_2 is changing rapidly, due to the elastic contribution to the Burkhardt-Cottingham sum rule. A possible violation of this later sum rule is briefly discussed.
8 pages, 2 eps figures