Small x behavior of parton distributions. Analytical and "frozen" coupling constants. BFKL corrections
arXiv:1212.3733
Abstract
It is shown that in the leading twist approximation of the Wilson operator product expansion with "frozen" and analytic strong coupling constants, Bessel-inspired behavior of the structure functions F2 and F2cc and also the derivative d(ln F2)/d(ln(1/x)) at small x values, obtained for a flat initial condition in the DGLAP evolution equations, leads to good agreement with the deep inelastic scattering experimental data from HERA.
26 pages, 8 figures, talk given at the XXI International Baldin Seminar on High Energy Physics Problems,September 10-15, 2012, JINR, Dubna, Russia