New Global Fit to the Total Photon-Proton Cross-Section sigma L+T and to the Structure Function F2

Understand

A fit to world data on the photon-proton cross section sigma L+T and the unpolarised structure function F2 is presented.

• The 23-parameter ALLM model based on Reggeon and Pomeron exchange is used.
• Cross section data were reconstructed to avoid inconsistencies with respect to R of the published F2 data base.
• Parameter uncertainties and correlations are obtained.