Extracting the dipole cross-section from photo- and electro-production total cross-section data

Abstract

We report on a successful attempt to extract the cross-section for the high-energy scattering of colour dipoles of fixed transverse size off protons using electroproduction and photoproduction total cross-section data, subject to the constraint provided by the ratio of the overall photon dissociation cross-section to the total cross-section.

LaTeX2e, 29 pages, 11 figures, submitted to Phys Rev D. Because of error in parameter assignment, one parameter removed and tables of parameter fits and affected figs 2, 4-9 replaced. Error in figure caption corrected. Reference updated

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