Optimized determination of the polarized Bjorken sum rule

Abstract

Abstract We determine the polarized Bjorken sum rule Γ 1 p − n in two different ways: phenomenologically, by means of integration of the spin structure function g 1 p − n within the truncated moment approach and theoretically, with use of the renormalization group for the optimization of the perturbation series. Presented approaches are universal and can be applied to any of the DIS sum rules.