Impact of the running QCD coupling on the value of the intercept of the structure function $g_1$ singlet

Abstract

The running QCD coupling effects for $g_1$ singlet are studied. We predict that asymptotically $g_1^S \sim x^{- \Delta_S}$, with the singlet intercept $\Delta_S \approx 0.85$.Comment: Talk given at the "XI International Workshop on Deep Inelastic Scattering (DIS2003)", Saint Petersburg, 23-27 April 2003; 6 page