Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-02-09
Z.Phys. C69 (1996) 259-267
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, latex, 5 figures appended as uuencoded file
Scientific paper
The small x behaviour of the non-singlet structure function is studied within the double logarithmic approximation (DLA) of perturbative QCD. Since there is neither $k_T$ nor $\theta$ ordering in the ladder Feynman graphs, the predicted non-singlet quark densities for the HERA kinematical range ($x\sim 10^{-3}$) exceed the values calculated from the small-$x$ approximation of the conventional Altarelli-Parisi evolution by a factor up to ten.
Ermolaev B. I.
Manayenkov S. I.
Ryskin M. G.
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