Intercepts of the non-singlet structure functions
Ermolaev, B. I. · Greco, M. · Troyan, S. I.
Original · EN
Infrared evolution equations for small-x behaviour of the non-singlet structure functions f₁NS and g₁NS are obtained and solved in the next-to-leading approximation, to all orders in αₛ, and including running αₛ effects. The intercepts of these structure functions, i.e. the exponents of the power-like small-x behaviour, are calculated. A detailed comparison with the leading logarithmic approximation (LLA) and DGLAP is made. We explain why the LLA predictions for the small-x dependence of the structure functions may be more reliable than the prediction for the Q² dependence in the range of Q² explored at HERA.
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