Diffractive parton distributions from the saturation model

Details Diffractive parton distributions from the saturation model Diffractive parton distributions from the saturation model

2001-02-08

arxiv.org/abs/hep-ph/0102093v4

Eur.Phys.J.C20:313-321,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 6 figures, latex, Q_0^2 corrected in comparison to the journal version

Scientific paper

10.1007/s100520100661

We review diffractive deep inelastic scattering (DIS) in the light of the collinear factorization theorem. This theorem allows to define diffractive parton distributions in the leading twist approach. Due to its selective final states, diffractive DIS offers interesting insight into the form of the diffractive parton distributions which we explore with the help of the saturation model. We find Regge-like factorization with the correct energy dependence measured at HERA. A remarkable feature of diffractive DIS is the dominance of the twist-4 contribution for small diffractive masses. We quantify this effect and make a comparison with the data.

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