The $Q^2$ dependence of the measured asymmetry $A_1$: the test of the Bjorken sum rule

Abstract

We analyse the proton and deutron data on spin dependent asymmetry $A_1(x,Q^2)$ supposing the DIS structure functions $g_1(x,Q^2)$ and $F_3(x,Q^2)$ have the similar $Q^2$-dependence. As a result, we have obtained that $\hat{I}{“}_1^p-\hat{I}{“}_1^n=0.190\pm 0.038$ at $Q^2=10Ge{V}^2$ and $\hat{I}{“}_1^p-\hat{I}{“}_1^n=0.165\pm 0.026$ at $Q^2=3Ge{V}^2$, what is in the best agreement with the Bjorken sum rule predictions.

LaTeX, 5 pages, no figures, to be published in JETP Letters