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arXiv · hep-ph/9710547

Twist-4 effects and $Q^{2}$ dependence of diffractive DIS

M. Bertini·M. Genovese·N. N. Nikolaev·A. V. Pronyaev·B. G. Zakharov
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Abstract

In this letter we report the direct perturbative QCD evaluation of twist-4 effects in diffractive DIS. They are large and have a strong impact on the $Q^2$ dependence of diffractive structure functions at large $β$. Based on the AGK rules, we comment on the possible contribution from diffractive higher twists to $\propto {1 \over Q^{2}}$ corrections to proton structure function at small $x$. These corrections to the longitudinal structure function $F_{L}$ may be particularly large.

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M. Bertini, M. Genovese, N. N. Nikolaev, A. V. Pronyaev, B. G. Zakharov. 1997-10-30. Twist-4 effects and $Q^{2}$ dependence of diffractive DIS. https://doi.org/10.1016/s0370-2693(98)00036-7

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