On the Limitations of the Color Dipole Picture

TL;DR

This paper examines the limitations of the color dipole model in high energy photon-proton scattering, providing bounds on structure function ratios and analyzing the impact of energy variable choices on the model's applicability.

Contribution

It introduces bounds on structure function ratios and discusses the effects of energy variable choices within the color dipole picture.

Findings

Bounds on ratios of deep inelastic structure functions

Restrictions on the kinematical range of the dipole model

Analysis of energy variable choices in the dipole cross section

Abstract

We discuss two aspects of the color dipole picture of high energy photon-proton scattering. First we present bounds on various ratios of deep inelastic structure functions resulting from the dipole picture that, together with the measured data, can be used to restrict the kinematical range of its applicability. The second issue that we address is the choice of energy variable in the dipole-proton cross section.