Twist-4 Gluon Recombination Corrections for Deep Inelastic Structure Functions

Abstract

We calculate twist--4 coefficient functions for the deep inelastic structure function $F_2(x,Q^2)$ associated to 4--gluon operator matrix elements for general values of the Bjorken variable $x$ and study the numerical effect on the slope $\partial F_2(x,Q^2)/\partial \log Q^2$. It is shown that these contributions diminish the strongly rising twist--2 terms towards small values of $x$.

arXiv comment10 pages LATEX, 2 style file, 3 eps-files

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• Ultra-high energy neutrino-nucleon interactions
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• On the Scaling Violations of Diffractive Structure Functions: Operator Approach
• Analytical evolution of nucleon structure functions with power corrections at twist-4 and predictions for ultra-high energy neutrino-nucleon cross section
• Polarized Deep Inelastic Diffractive ep Scattering: Operator Approach