Geometric Scaling from GLAP evolution

Abstract

We show that the geometric scaling of the total virtual photon-proton cross section data can be explained using standard linear GLAP perturbative evolution with generic boundary conditions in a wide kinematic region. This allows us to single out the region where geometric scaling may provide evidence for parton saturation.

Comments: Final version, published in Phys. Rev. Letters. References and minor clarifications added. 4 pages, 5 figures, LaTeX with REVTeX