Some remarks on geometric scaling

Abstract

In order to explain a striking symmetry of the HERA data for virtual photon-proton cross section, I propose a simple model based on the elementary 2-gluon exchange dipole-dipole cross section, and which exhibits geometric scaling. I also suggest that geometric scaling should manifest itself in exclusive processes. A preliminary search for this property in the HERA data is presented.

5 pages, talk presented at the 11th International Workshop on Deep-Inelastic Scattering (DIS03), St. Petersburg, April 2003

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