Saturation model for 2-gamma physics

2002/06/14 by N. Timneanu, J. Kwiecinski, L. Motyka
Physics and Astronomy · #hep-ph

paper · pdf

published as Acta Phys.Polon. B33 (2002) 3045-3050 · 5 pages, 4 figures, uses appolb.cls. Presented at the X International Workshop on Deep Inelastic Scattering (DIS2002), Cracow, 30 April - 4 May 2002. Similar to the Epiphany Conference contribution

arxiv created 2002/06/14 · arxiv updated 2009/11/30

Abstract

We introduce a saturation model for photon-photon interactions, based on a QCD dipole picture of high energy scattering. The two-dipole cross-section is assumed to satisfy the saturation property. This pomeron-like contribution is supplemented with QPM and non-pomeron reggeon contributions. The model gives a very good description of the data on the gamma-gamma total cross-section, on the photon structure function F₂^gamma(x,Q²) at low x and on the gamma*-gamma* cross-section.

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